subject:(Acoustics)

University of California – Santa Cruz

1. Cunningham, Kane Alexander. Pinniped hearing in a changing acoustic environment.

Degree: Ocean Sciences, 2015, University of California – Santa Cruz

URL: http://www.escholarship.org/uc/item/737223k8

► Increasing levels of anthropogenic noise in the world’s oceans are a matter of concern for the conservation of pinnipeds (seals, sea lions, and walruses). Sound… (more)

▼ Increasing levels of anthropogenic noise in the world’s oceans are a matter of concern for the conservation of pinnipeds (seals, sea lions, and walruses). Sound from noise-generating human activities—such as marine construction, oil exploration, and shipping traffic—may alter the lives of pinnipeds in a variety of ways. For example, anthropogenic noise can interfere with an individual’s ability to detect calls from conspecifics or the sound of an approaching predator; and loud, aversive sounds can cause animals to abandon preferred habitats. Laboratory studies of hearing in pinnipeds over the past 50 years have expanded knowledge of the basic auditory capabilities of certain species, and data from these studies are currently being used to predict how specific noise-generating activities may affect wild animals. However, predicting the effects of anthropogenic noise is a complex process, and certain knowledge gaps must be addressed before accurate predictions can be made. First, it is unclear how well standard hearing data—which are generated using simple, synthetic sounds—can predict pinniped auditory sensitivity to spectrally and temporally complex anthropogenic sounds. Second, hearing sensitivity data above 80 kHz are scarce for most species, which is problematic given the recent proliferation of high-frequency, high-energy acoustic marine technologies such as commercial sonar and recreational fish finders. The research described in this dissertation addresses these two knowledge gaps using behavioral hearing experiments with trained pinniped subjects combined with mathematical models of hearing and sound propagation. The data presented here improve the ability of regulators to predict the effects of anthropogenic noise on pinnipeds and indicate future research directions. The reported sensitivity data for complex sounds show that certain spectral and temporal features can significantly alter detectability. Comparison of detection thresholds for complex stimuli to predictions from hearing models based on standard hearing metrics showed differences of up to 8 dB in both quiet and noisy conditions. Such discrepancies indicate the need for future research into how complex features influence the detectability of underwater sound. High-frequency sensitivity data for two seals and one sea lion show that these animals can detect underwater sound at frequencies well above their traditional high-frequency hearing limits, with all three subjects able to detect tonal signals centered at 180 kHz. The shapes of the sensitivity profiles for all subjects indicate that the idea of a traditional high-frequency hearing limit is problematic for underwater pinniped listeners, a fact that regulators must take into account.

Subjects/Keywords: Acoustics

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APA (6^th Edition):

Cunningham, K. A. (2015). Pinniped hearing in a changing acoustic environment. (Thesis). University of California – Santa Cruz. Retrieved from http://www.escholarship.org/uc/item/737223k8

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Cunningham, Kane Alexander. “Pinniped hearing in a changing acoustic environment.” 2015. Thesis, University of California – Santa Cruz. Accessed March 01, 2021. http://www.escholarship.org/uc/item/737223k8.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Cunningham, Kane Alexander. “Pinniped hearing in a changing acoustic environment.” 2015. Web. 01 Mar 2021.

Vancouver:

Cunningham KA. Pinniped hearing in a changing acoustic environment. [Internet] [Thesis]. University of California – Santa Cruz; 2015. [cited 2021 Mar 01]. Available from: http://www.escholarship.org/uc/item/737223k8.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Cunningham KA. Pinniped hearing in a changing acoustic environment. [Thesis]. University of California – Santa Cruz; 2015. Available from: http://www.escholarship.org/uc/item/737223k8

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

2. Cho, Chomgun. Robust source localization using the generalized array invariant and a vertical array.

Degree: Oceanography, 2017, University of California – San Diego

URL: http://www.escholarship.org/uc/item/8xn522x3

► The array invariant approach for passive localization utilizes multiple arrivals separated in beam angle and travel time via conventional plane-wave beamforming using either a horizontal… (more)

▼ The array invariant approach for passive localization utilizes multiple arrivals separated in beam angle and travel time via conventional plane-wave beamforming using either a horizontal or vertical array in shallow-water. Since this approach does not require precise knowledge of the environment and an acoustic propagation model, it is robust to environmental fluctuations. In addition, the approach is essentially equivalent to the waveguide invariant β based on the dispersion relationship between the group and phase speeds when β = 1, a generic value in ideal waveguides. However, the array invariant can be applicable to many shallow-water environments where the surface-bottom reflected arrivals behave similarly to those in ideal waveguides, simply using β = 1. By incorporating the waveguide invariant, the array invariant can be extended to general waveguides, referred to as generalized array invariant that is fully supported by the waveguide invariant physics. This dissertation presents the relationship between the waveguide invariant and array invariant, demonstrations with several experimental data using the generalized array invariant with a short- or long-aperture vertical array, and an impact of array tilt on the array invariant-based source-range estimation.• HF97 (High Frequency 1997) experiment: Demonstration of the robustness of source-range estimation using a 12-m vertical array for a source (2–3 kHz) at 6-km range in ∼100-m deep water in a fluctuating ocean environment over a day.• RADAR07 (Random Array of Drifting Acoustic Receivers 2007) experiment: Range-dependent environment with a sloping bottom using a 2.8-m vertical array for a moving source (2–3.5 kHz) between 0.5 and 5 km in range with the water depth varying from 80 to 50 m.• SAVEX15 (Shallow-water Acoustic Variability EXperiment 2015) experiment: Range-independent environment using a large-aperture (about 56 m) sparse vertical array for a moving source (0.5–2 kHz) between 1.5 and 3.5 km in range in ∼100-m deep water.• KAM11 (The Kauai Acomms MURI 2011) experiment: Impact of array tilt on source range using a 1.2-m vertical array for a moored source (7–19 kHz) at 3-km range in ∼100-m deep water.

Subjects/Keywords: Acoustics

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APA (6^th Edition):

Cho, C. (2017). Robust source localization using the generalized array invariant and a vertical array. (Thesis). University of California – San Diego. Retrieved from http://www.escholarship.org/uc/item/8xn522x3

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Cho, Chomgun. “Robust source localization using the generalized array invariant and a vertical array.” 2017. Thesis, University of California – San Diego. Accessed March 01, 2021. http://www.escholarship.org/uc/item/8xn522x3.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Cho, Chomgun. “Robust source localization using the generalized array invariant and a vertical array.” 2017. Web. 01 Mar 2021.

Vancouver:

Cho C. Robust source localization using the generalized array invariant and a vertical array. [Internet] [Thesis]. University of California – San Diego; 2017. [cited 2021 Mar 01]. Available from: http://www.escholarship.org/uc/item/8xn522x3.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Cho C. Robust source localization using the generalized array invariant and a vertical array. [Thesis]. University of California – San Diego; 2017. Available from: http://www.escholarship.org/uc/item/8xn522x3

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

3. O'Connor, Caleb S. Measurement of Dispersion and Attenuation in Granular Media using a Filter-Correlation Method.

Degree: 2015, University of Louisiana at Lafayette

URL: http://pqdtopen.proquest.com/#viewpdf?dispub=1592420

► A wideband technique for measuring sound dispersion and frequency-dependent attenuation in granular media is presented. The measurements were done on a mono-disperse medium of… (more)

Subjects/Keywords: Acoustics

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APA (6^th Edition):

O'Connor, C. S. (2015). Measurement of Dispersion and Attenuation in Granular Media using a Filter-Correlation Method. (Thesis). University of Louisiana at Lafayette. Retrieved from http://pqdtopen.proquest.com/#viewpdf?dispub=1592420

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

O'Connor, Caleb S. “Measurement of Dispersion and Attenuation in Granular Media using a Filter-Correlation Method.” 2015. Thesis, University of Louisiana at Lafayette. Accessed March 01, 2021. http://pqdtopen.proquest.com/#viewpdf?dispub=1592420.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

O'Connor, Caleb S. “Measurement of Dispersion and Attenuation in Granular Media using a Filter-Correlation Method.” 2015. Web. 01 Mar 2021.

Vancouver:

O'Connor CS. Measurement of Dispersion and Attenuation in Granular Media using a Filter-Correlation Method. [Internet] [Thesis]. University of Louisiana at Lafayette; 2015. [cited 2021 Mar 01]. Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=1592420.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

O'Connor CS. Measurement of Dispersion and Attenuation in Granular Media using a Filter-Correlation Method. [Thesis]. University of Louisiana at Lafayette; 2015. Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=1592420

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Boston University

4. Mi, Jing. Acoustic source separation based on target equalization-cancellation.

Degree: PhD, Biomedical Engineering, 2018, Boston University

URL: http://hdl.handle.net/2144/27449

► Normal-hearing listeners are good at focusing on the target talker while ignoring the interferers in a multi-talker environment. Therefore, efforts have been devoted to build… (more)

Subjects/Keywords: Acoustics

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APA (6^th Edition):

Mi, J. (2018). Acoustic source separation based on target equalization-cancellation. (Doctoral Dissertation). Boston University. Retrieved from http://hdl.handle.net/2144/27449

Chicago Manual of Style (16^th Edition):

Mi, Jing. “Acoustic source separation based on target equalization-cancellation.” 2018. Doctoral Dissertation, Boston University. Accessed March 01, 2021. http://hdl.handle.net/2144/27449.

MLA Handbook (7^th Edition):

Mi, Jing. “Acoustic source separation based on target equalization-cancellation.” 2018. Web. 01 Mar 2021.

Vancouver:

Mi J. Acoustic source separation based on target equalization-cancellation. [Internet] [Doctoral dissertation]. Boston University; 2018. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/2144/27449.

Council of Science Editors:

Mi J. Acoustic source separation based on target equalization-cancellation. [Doctoral Dissertation]. Boston University; 2018. Available from: http://hdl.handle.net/2144/27449

Boston University

5. Bogdan, Caitlin. Acoustically driven control of mobile robots for source localization in complex ocean environments.

Degree: PhD, Mechanical Engineering, 2018, Boston University

URL: http://hdl.handle.net/2144/30725

► Ocean based robotic systems are an opportunity to combine the power of acoustic sensing in the water with sophisticated control schemes. Together these bodies of… (more)

▼ Ocean based robotic systems are an opportunity to combine the power of acoustic sensing in the water with sophisticated control schemes. Together these bodies of knowledge could create autonomous systems for mapping acoustic fields and localizing underwater sources. However, existing control schemes have often been designed for land and air robots. This creates challenges for applying these algorithms to complex ocean environments. Acoustic fields are strongly frequency dependent, can rarely be realistically modeled analytically, have complex contours where the feature of interest is not always located at the peak pressure, and include many sources of background noise. This work addresses these challenges for control schemes from three categories: feedback and observer control, gradient ascent control and optimal control. In each case the challenges of applying the control scheme to an acoustic field are enumerated and addressed to create a suite of acoustically driven control schemes. For many of these algorithms, the largest issue is the processing and collection of acoustic data, particularly in the face of noise. Two new methods are developed to solve this issue. The first is the use of Principal Component Analysis as a noise filter for acoustic signals, which is shown to address particularly high levels of noise, while providing the frequency dependent sound pressure levels necessary for subsequent processing. The second method addresses the challenge that an analytical expression of the pressure field is often lacking, due to uncertainties and complexities in the environmental parameters. Basis functions are used to address this. Several candidates are considered, but Legendre polynomials are selected for their low error and reasonable processing time. Additionally, a method of intermediate points is used to approximate high frequency pressure fields with low numbers of collected data points. Following this work, the individual control schemes are explored. A method of observer feedback control is proposed to localize sources by linearizing the acoustic fields. A gradient ascent method for localizing sources in real time is proposed which uses Matched Field Processing and Bayesian filters. These modifications allow the gradient ascent algorithm to be compatible with complex acoustic fields. Finally, an optimal control method is proposed using Pontryagin's Maximum Principle to derive trajectories in real time that balance information gain with control energy. This method is shown to efficiently map an acoustic field, either for optimal sensor placement or to localize sources. The contribution of this work is a new collection of control schemes that use acoustic data to localize acoustically complex sources in a realistic noisy environment, and an understanding of the tradeoffs inherent in applying each of these to the acoustic domain. Advisors/Committee Members: McDaniel, J. Gregory (advisor).

Subjects/Keywords: Acoustics

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Bogdan, C. (2018). Acoustically driven control of mobile robots for source localization in complex ocean environments. (Doctoral Dissertation). Boston University. Retrieved from http://hdl.handle.net/2144/30725

Chicago Manual of Style (16^th Edition):

Bogdan, Caitlin. “Acoustically driven control of mobile robots for source localization in complex ocean environments.” 2018. Doctoral Dissertation, Boston University. Accessed March 01, 2021. http://hdl.handle.net/2144/30725.

MLA Handbook (7^th Edition):

Bogdan, Caitlin. “Acoustically driven control of mobile robots for source localization in complex ocean environments.” 2018. Web. 01 Mar 2021.

Vancouver:

Bogdan C. Acoustically driven control of mobile robots for source localization in complex ocean environments. [Internet] [Doctoral dissertation]. Boston University; 2018. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/2144/30725.

Council of Science Editors:

Bogdan C. Acoustically driven control of mobile robots for source localization in complex ocean environments. [Doctoral Dissertation]. Boston University; 2018. Available from: http://hdl.handle.net/2144/30725

6. Weidner, Elizabeth Frances. A wideband acoustic method for direct assessment of bubble-mediated methane flux.

Degree: MS, 2018, University of New Hampshire

URL: https://scholars.unh.edu/thesis/1177

► The bubble-mediated transport and eventual fate of methane escaping from the seafloor is of great interest to researchers in many fields. Acoustic systems are frequently… (more)

Subjects/Keywords: Acoustics

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APA (6^th Edition):

Weidner, E. F. (2018). A wideband acoustic method for direct assessment of bubble-mediated methane flux. (Thesis). University of New Hampshire. Retrieved from https://scholars.unh.edu/thesis/1177

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Weidner, Elizabeth Frances. “A wideband acoustic method for direct assessment of bubble-mediated methane flux.” 2018. Thesis, University of New Hampshire. Accessed March 01, 2021. https://scholars.unh.edu/thesis/1177.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Weidner, Elizabeth Frances. “A wideband acoustic method for direct assessment of bubble-mediated methane flux.” 2018. Web. 01 Mar 2021.

Vancouver:

Weidner EF. A wideband acoustic method for direct assessment of bubble-mediated methane flux. [Internet] [Thesis]. University of New Hampshire; 2018. [cited 2021 Mar 01]. Available from: https://scholars.unh.edu/thesis/1177.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Weidner EF. A wideband acoustic method for direct assessment of bubble-mediated methane flux. [Thesis]. University of New Hampshire; 2018. Available from: https://scholars.unh.edu/thesis/1177

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

7. Johnson, Benjamin. The Ultrasonic Characterization of Shear Thickening Suspensions.

Degree: PhD, Physics, 2012, Washington University in St. Louis

URL: https://openscholarship.wustl.edu/etd/700

► This dissertation describes the characterization of an inherently inhomogeneous medium capable of shear thickening. An aqueous suspension of cornstarch represents an important exemplar of such… (more)

Subjects/Keywords: Acoustics

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APA (6^th Edition):

Johnson, B. (2012). The Ultrasonic Characterization of Shear Thickening Suspensions. (Doctoral Dissertation). Washington University in St. Louis. Retrieved from https://openscholarship.wustl.edu/etd/700

Chicago Manual of Style (16^th Edition):

Johnson, Benjamin. “The Ultrasonic Characterization of Shear Thickening Suspensions.” 2012. Doctoral Dissertation, Washington University in St. Louis. Accessed March 01, 2021. https://openscholarship.wustl.edu/etd/700.

MLA Handbook (7^th Edition):

Johnson, Benjamin. “The Ultrasonic Characterization of Shear Thickening Suspensions.” 2012. Web. 01 Mar 2021.

Vancouver:

Johnson B. The Ultrasonic Characterization of Shear Thickening Suspensions. [Internet] [Doctoral dissertation]. Washington University in St. Louis; 2012. [cited 2021 Mar 01]. Available from: https://openscholarship.wustl.edu/etd/700.

Council of Science Editors:

Johnson B. The Ultrasonic Characterization of Shear Thickening Suspensions. [Doctoral Dissertation]. Washington University in St. Louis; 2012. Available from: https://openscholarship.wustl.edu/etd/700

8. Rowley, William. MATHEMATICAL MODELLING OF NOVEL METAMATERIALS FOR NOISE REDUCTION APPLICATIONS.

Degree: 2018, University of Manchester

URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:317247

► In this thesis we investigate acoustic metamaterials and how they can influence incident sound waves. Specifically we are interested in the mathematical technique of transformation… (more)

Subjects/Keywords: Metamaterials; Acoustics; Transformation acoustics; Homogenisation

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APA (6^th Edition):

Rowley, W. (2018). MATHEMATICAL MODELLING OF NOVEL METAMATERIALS FOR NOISE REDUCTION APPLICATIONS. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:317247

Chicago Manual of Style (16^th Edition):

Rowley, William. “MATHEMATICAL MODELLING OF NOVEL METAMATERIALS FOR NOISE REDUCTION APPLICATIONS.” 2018. Doctoral Dissertation, University of Manchester. Accessed March 01, 2021. http://www.manchester.ac.uk/escholar/uk-ac-man-scw:317247.

MLA Handbook (7^th Edition):

Rowley, William. “MATHEMATICAL MODELLING OF NOVEL METAMATERIALS FOR NOISE REDUCTION APPLICATIONS.” 2018. Web. 01 Mar 2021.

Vancouver:

Rowley W. MATHEMATICAL MODELLING OF NOVEL METAMATERIALS FOR NOISE REDUCTION APPLICATIONS. [Internet] [Doctoral dissertation]. University of Manchester; 2018. [cited 2021 Mar 01]. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:317247.

Council of Science Editors:

Rowley W. MATHEMATICAL MODELLING OF NOVEL METAMATERIALS FOR NOISE REDUCTION APPLICATIONS. [Doctoral Dissertation]. University of Manchester; 2018. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:317247

9. Lubrick, Mark. Real Time Physical Analysis of Consolidation Process for Low Pressure Gas Dynamic Spray.

Degree: MS, Physics, 2009, National Library of Canada

URL: http://scholar.uwindsor.ca/etd/375

► The gas dynamic spray process is studied via acoustic methods with the main focus being on developing an online system to monitor the process as… (more)

Subjects/Keywords: Physics; Acoustics.

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APA (6^th Edition):

Lubrick, M. (2009). Real Time Physical Analysis of Consolidation Process for Low Pressure Gas Dynamic Spray. (Masters Thesis). National Library of Canada. Retrieved from http://scholar.uwindsor.ca/etd/375

Chicago Manual of Style (16^th Edition):

Lubrick, Mark. “Real Time Physical Analysis of Consolidation Process for Low Pressure Gas Dynamic Spray.” 2009. Masters Thesis, National Library of Canada. Accessed March 01, 2021. http://scholar.uwindsor.ca/etd/375.

MLA Handbook (7^th Edition):

Lubrick, Mark. “Real Time Physical Analysis of Consolidation Process for Low Pressure Gas Dynamic Spray.” 2009. Web. 01 Mar 2021.

Vancouver:

Lubrick M. Real Time Physical Analysis of Consolidation Process for Low Pressure Gas Dynamic Spray. [Internet] [Masters thesis]. National Library of Canada; 2009. [cited 2021 Mar 01]. Available from: http://scholar.uwindsor.ca/etd/375.

Council of Science Editors:

Lubrick M. Real Time Physical Analysis of Consolidation Process for Low Pressure Gas Dynamic Spray. [Masters Thesis]. National Library of Canada; 2009. Available from: http://scholar.uwindsor.ca/etd/375

Universidade Estadual de Campinas

10. Thomazelli, Rodolfo, 1984-. Absorção sonora de baixas frequências : proposta de absorvedor de Helmholtz variável: Low frequency sound absorption : a tunable Helmholtz absorber proposer.

Degree: 2019, Universidade Estadual de Campinas

URL: http://repositorio.unicamp.br/jspui/handle/REPOSIP/344222

► Abstract: As in any enclosed space, the phenomenon of stationary sound waves, also known as acoustic modes, is observed in the acoustic behavior of rooms.… (more)

▼ Abstract: As in any enclosed space, the phenomenon of stationary sound waves, also known as acoustic modes, is observed in the acoustic behavior of rooms. In the case of rooms with volumes less than 60 m³ (small rooms), this phenomenon produces spectral and spatial heterogeneities enough to disqualify the acoustics of the environment, especially for the first octaves of the audible spectrum (25 to 280 Hz, approximately). The most adequate alternative to control this problem is the implementation of sound absorption, to which stands out the Helmholtz absorber, a device whose production and installation are simple and of low cost. This type of absorber acts in narrow bands of the spectrum, tuned according to the respective geometric configuration. On other hand, the frequency range of the modal field depends on the geometry of the room where it was generated. Thus, to control the acoustic modes via the Helmholtz absorber, devices of various configurations are required, each one designed to operate at a specific frequency of the modal field relative to the application room. It is judged that such specificity could be minimized by the development of a single solution that allows variations in the respective configuration, thus being able to be tuned according to the needs. The present research aims to test this hypothesis. Theoretical and experimental studies were conducted to characterize the Helmholtz absorber in the desired frequency range. It has been shown that it is possible to obtain absorber configurations tuned over the range of interest with high magnitude (sound absorption coefficients around 0.7) by varying two of the five parameters of the system that are amenable to modification. From the results, a proposal of variable Helmholtz absorber was developed to be applied in the modal control of small rooms Advisors/Committee Members: UNIVERSIDADE ESTADUAL DE CAMPINAS (CRUESP), Bertoli, Stelamaris Rolla, 1958- (advisor), Universidade Estadual de Campinas. Faculdade de Engenharia Civil, Arquitetura e Urbanismo (institution), Programa de Pós-Graduação em Engenharia Civil (nameofprogram), Masiero, Bruno Sanches (committee member), Santos, José Maria Campos dos (committee member), Melo, Gustavo da Silva Vieira de (committee member), Miranda, Erasmo Felipe Vergara (committee member).

Subjects/Keywords: Acústica; Acoustics

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APA (6^th Edition):

Thomazelli, Rodolfo, 1. (2019). Absorção sonora de baixas frequências : proposta de absorvedor de Helmholtz variável: Low frequency sound absorption : a tunable Helmholtz absorber proposer. (Thesis). Universidade Estadual de Campinas. Retrieved from http://repositorio.unicamp.br/jspui/handle/REPOSIP/344222

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Thomazelli, Rodolfo, 1984-. “Absorção sonora de baixas frequências : proposta de absorvedor de Helmholtz variável: Low frequency sound absorption : a tunable Helmholtz absorber proposer.” 2019. Thesis, Universidade Estadual de Campinas. Accessed March 01, 2021. http://repositorio.unicamp.br/jspui/handle/REPOSIP/344222.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Thomazelli, Rodolfo, 1984-. “Absorção sonora de baixas frequências : proposta de absorvedor de Helmholtz variável: Low frequency sound absorption : a tunable Helmholtz absorber proposer.” 2019. Web. 01 Mar 2021.

Vancouver:

Thomazelli, Rodolfo 1. Absorção sonora de baixas frequências : proposta de absorvedor de Helmholtz variável: Low frequency sound absorption : a tunable Helmholtz absorber proposer. [Internet] [Thesis]. Universidade Estadual de Campinas; 2019. [cited 2021 Mar 01]. Available from: http://repositorio.unicamp.br/jspui/handle/REPOSIP/344222.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Thomazelli, Rodolfo 1. Absorção sonora de baixas frequências : proposta de absorvedor de Helmholtz variável: Low frequency sound absorption : a tunable Helmholtz absorber proposer. [Thesis]. Universidade Estadual de Campinas; 2019. Available from: http://repositorio.unicamp.br/jspui/handle/REPOSIP/344222

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Texas A&M University

11. Kanakri, Shireen M. The Impact of Acoustical Environmental Design on Children with Autsim.

Degree: PhD, Architecture, 2014, Texas A&M University

URL: http://hdl.handle.net/1969.1/152667

► In recent years, research has shown that the educational environment has a profound effect on learning and performance among students, especially those with autism. Many… (more)

Subjects/Keywords: Autism; Acoustics

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APA (6^th Edition):

Kanakri, S. M. (2014). The Impact of Acoustical Environmental Design on Children with Autsim. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/152667

Chicago Manual of Style (16^th Edition):

Kanakri, Shireen M. “The Impact of Acoustical Environmental Design on Children with Autsim.” 2014. Doctoral Dissertation, Texas A&M University. Accessed March 01, 2021. http://hdl.handle.net/1969.1/152667.

MLA Handbook (7^th Edition):

Kanakri, Shireen M. “The Impact of Acoustical Environmental Design on Children with Autsim.” 2014. Web. 01 Mar 2021.

Vancouver:

Kanakri SM. The Impact of Acoustical Environmental Design on Children with Autsim. [Internet] [Doctoral dissertation]. Texas A&M University; 2014. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/1969.1/152667.

Council of Science Editors:

Kanakri SM. The Impact of Acoustical Environmental Design on Children with Autsim. [Doctoral Dissertation]. Texas A&M University; 2014. Available from: http://hdl.handle.net/1969.1/152667

12. Wattez, Y.C.M. (author). Acoustics in Sports halls.

Degree: 2012, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:0bdfeb44-b72a-409d-81a0-895aceee72da

► Problem statement Sports teachers (and other users) often suffer from bad acoustics in sports halls. A survey revealed that most complaints are about tiredness, throat… (more)

▼ Problem statement Sports teachers (and other users) often suffer from bad acoustics in sports halls. A survey revealed that most complaints are about tiredness, throat problems and hearing problems. Bad acoustics in sports halls are mainly caused by an uneven distribution of the sound absorbing material in a hall. Often, the roof absorbs most of the sound where the floor and walls up to 3 meter reflect most of the sound. This lower part of the walls needs to be strong, flat and hard to rebound balls. In this way, vertically reflected sound is being absorbed faster than horizontally reflected sound. This difference causes sagging Schroeder curves and therefore long reverberation times. Dutch standards for acoustics are mainly based on reverberation times, so sagging curves are unwanted. Besides the problem of the long reverberation times, another problem is found. Measurements show that sports halls constructed with stone-like materials absorb sound according to the expectations of the material properties. Sports halls constructed with perforated steel sound absorbing panels give different results. These panels seem to behave differently on sound absorption than expected. Especially low frequencies seem to be absorbed extremely well by the panels. The research question therefore is: ‘Why do perforated steel sound absorbing panels seem to behave differently in absorption coefficient in sports halls than expected from laboratory test results?’ Because this question is part of the larger subject ‘acoustics in sports halls’, it is necessary to investigate the acoustical behaviour of perforated steel panels for a broad demarcation of the subject. Approach In order to find an answer to the research question, two hypotheses are tested by measurements. The measurements are done in a laboratory and in a scale model. The results are analysed. The conclusions give insight in the sound absorbing behaviour of perforated steel sound absorbing panels. Besides that, the conclusions give guidelines to the design phase of this graduation project. Hypotheses: 1. A perforated steel panel behaves differently in practice than in a laboratory situation on absorption coefficient because the shape of the panels causes sound absorption of parallel striking sound based on a phase shift principle. 2. A perforated steel panel behaves differently in practice than in a laboratory situation on absorption coefficient because the backing construction has influence on the result. Laboratory measurements Absorption coefficient measurements are done in the reverberation room of the acoustical laboratory. Different samples of the roof structure are tested. By comparing the results, we get insight in the influence of different parts of the roof structure. Besides that, hypothesis one can be tested: the influence of the backing construction will become clear. Scale model measurements The scale model makes it possible to test the influence of different shaped roof structures in a small model. By using the same, reflecting material for all walls, we get… Advisors/Committee Members: Tenpierik, M.J. (mentor).

Subjects/Keywords: acoustics

…suffer from bad acoustics in sports halls. A survey revealed that most complaints are about… …tiredness, throat problems and hearing problems. Bad acoustics in sports halls are mainly caused… …for acoustics are mainly based on reverberation times, so sagging curves are unwanted… …laboratory test results?’ Because this question is part of the larger subject ‘acoustics in sports… …weakest link when talking about acoustics in sports halls. The designed panel should improve…

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APA (6^th Edition):

Wattez, Y. C. M. (. (2012). Acoustics in Sports halls. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:0bdfeb44-b72a-409d-81a0-895aceee72da

Chicago Manual of Style (16^th Edition):

Wattez, Y C M (author). “Acoustics in Sports halls.” 2012. Masters Thesis, Delft University of Technology. Accessed March 01, 2021. http://resolver.tudelft.nl/uuid:0bdfeb44-b72a-409d-81a0-895aceee72da.

MLA Handbook (7^th Edition):

Wattez, Y C M (author). “Acoustics in Sports halls.” 2012. Web. 01 Mar 2021.

Vancouver:

Wattez YCM(. Acoustics in Sports halls. [Internet] [Masters thesis]. Delft University of Technology; 2012. [cited 2021 Mar 01]. Available from: http://resolver.tudelft.nl/uuid:0bdfeb44-b72a-409d-81a0-895aceee72da.

Council of Science Editors:

Wattez YCM(. Acoustics in Sports halls. [Masters Thesis]. Delft University of Technology; 2012. Available from: http://resolver.tudelft.nl/uuid:0bdfeb44-b72a-409d-81a0-895aceee72da

University of Oregon

13. Brittell, Megen Elizabeth. Neuro-Imaging Support for the Use of Audio to Represent Geospatial Location in Cartographic Design.

Degree: 2019, University of Oregon

URL: http://pqdtopen.proquest.com/#viewpdf?dispub=13420194

► Audio has the capacity to display geospatial data. As auditory display design grapples with the challenge of aligning the spatial dimensions of the data… (more)

▼ Audio has the capacity to display geospatial data. As auditory display design grapples with the challenge of aligning the spatial dimensions of the data with the dimensions of the display, this dissertation investigates the role of time in auditory geographic maps. Three auditory map types translate geospatial data into collections of musical notes, and arrangement of those notes in time vary across three map types: sequential, augmented-sequential , and concurrent. Behavioral and neuroimaging methods assess the auditory symbology. A behavioral task establishes geographic context, and neuroimaging provides a quantitative measure of brain responses to the behavioral task under recall and active listening response conditions. In both behavioral and neuroimaging data, two paired contrasts measure differences between the sequential and augmented-sequential map types, and between the augmented- sequential and concurrent map types. Behavioral data reveal differences in both response time and accuracy. Response times for the augmented-sequential map type are substantially longer in both contrasts under the active response condition. Accuracy is lower for concurrent maps than for augmented-sequential maps; response condition influences direction of differences in accuracy between the sequential and augmented-sequential map types. Neuroimaging data from functional magnetic resonance imaging (fMRI) show significant differences in blood-oxygenation level dependent (BOLD) response during map listening. The BOLD response is significantly stronger in the left auditory cortex and planum temporale for the concurrent map type in contrast to the augmented- sequential map type. And the response in the right auditory cortex and bilaterally in the visual cortex is significantly stronger for augmented-sequential maps in contrast to sequential maps. Results from this research provide empirical evidence to inform choices in the design of auditory cartographic displays, enriching the diversity of geographic map artifacts.

Subjects/Keywords: Geography; Acoustics

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APA (6^th Edition):

Brittell, M. E. (2019). Neuro-Imaging Support for the Use of Audio to Represent Geospatial Location in Cartographic Design. (Thesis). University of Oregon. Retrieved from http://pqdtopen.proquest.com/#viewpdf?dispub=13420194

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Brittell, Megen Elizabeth. “Neuro-Imaging Support for the Use of Audio to Represent Geospatial Location in Cartographic Design.” 2019. Thesis, University of Oregon. Accessed March 01, 2021. http://pqdtopen.proquest.com/#viewpdf?dispub=13420194.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Brittell, Megen Elizabeth. “Neuro-Imaging Support for the Use of Audio to Represent Geospatial Location in Cartographic Design.” 2019. Web. 01 Mar 2021.

Vancouver:

Brittell ME. Neuro-Imaging Support for the Use of Audio to Represent Geospatial Location in Cartographic Design. [Internet] [Thesis]. University of Oregon; 2019. [cited 2021 Mar 01]. Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=13420194.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Brittell ME. Neuro-Imaging Support for the Use of Audio to Represent Geospatial Location in Cartographic Design. [Thesis]. University of Oregon; 2019. Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=13420194

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Boston University

14. Batson, Jesse. Inferring elastic moduli of droplets in acoustic fields.

Degree: MS, Mechanical Engineering, 2019, Boston University

URL: http://hdl.handle.net/2144/37982

► The acoustic radiation force, as seen in apparati such as acoustic levitators, continues to find applications in materials science, manufacturing, and medical fields. One example… (more)

Subjects/Keywords: Acoustics; Elasticity

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APA (6^th Edition):

Batson, J. (2019). Inferring elastic moduli of droplets in acoustic fields. (Masters Thesis). Boston University. Retrieved from http://hdl.handle.net/2144/37982

Chicago Manual of Style (16^th Edition):

Batson, Jesse. “Inferring elastic moduli of droplets in acoustic fields.” 2019. Masters Thesis, Boston University. Accessed March 01, 2021. http://hdl.handle.net/2144/37982.

MLA Handbook (7^th Edition):

Batson, Jesse. “Inferring elastic moduli of droplets in acoustic fields.” 2019. Web. 01 Mar 2021.

Vancouver:

Batson J. Inferring elastic moduli of droplets in acoustic fields. [Internet] [Masters thesis]. Boston University; 2019. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/2144/37982.

Council of Science Editors:

Batson J. Inferring elastic moduli of droplets in acoustic fields. [Masters Thesis]. Boston University; 2019. Available from: http://hdl.handle.net/2144/37982

University of Gothenburg / Göteborgs Universitet

15. Hellström, Per-Anders, 1946-. Sound transfer function and hearing : studies of the acoustics of the external ear auditory canal in man.

Degree: 1995, University of Gothenburg / Göteborgs Universitet

URL: http://hdl.handle.net/2077/11594

Subjects/Keywords: Acoustics

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APA (6^th Edition):

Hellström, Per-Anders, 1. (1995). Sound transfer function and hearing : studies of the acoustics of the external ear auditory canal in man. (Thesis). University of Gothenburg / Göteborgs Universitet. Retrieved from http://hdl.handle.net/2077/11594

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Hellström, Per-Anders, 1946-. “Sound transfer function and hearing : studies of the acoustics of the external ear auditory canal in man.” 1995. Thesis, University of Gothenburg / Göteborgs Universitet. Accessed March 01, 2021. http://hdl.handle.net/2077/11594.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Hellström, Per-Anders, 1946-. “Sound transfer function and hearing : studies of the acoustics of the external ear auditory canal in man.” 1995. Web. 01 Mar 2021.

Vancouver:

Hellström, Per-Anders 1. Sound transfer function and hearing : studies of the acoustics of the external ear auditory canal in man. [Internet] [Thesis]. University of Gothenburg / Göteborgs Universitet; 1995. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/2077/11594.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Hellström, Per-Anders 1. Sound transfer function and hearing : studies of the acoustics of the external ear auditory canal in man. [Thesis]. University of Gothenburg / Göteborgs Universitet; 1995. Available from: http://hdl.handle.net/2077/11594

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Rice University

16. VAN ROOY, DAVID LEE. DIGITAL ULTRASONIC WAVEFRONT RECONSTRUCTION IN THE NEAR FIELD.

Degree: PhD, Natural Sciences, 1971, Rice University

URL: http://hdl.handle.net/1911/14803

Subjects/Keywords: Acoustics

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APA (6^th Edition):

VAN ROOY, D. L. (1971). DIGITAL ULTRASONIC WAVEFRONT RECONSTRUCTION IN THE NEAR FIELD. (Doctoral Dissertation). Rice University. Retrieved from http://hdl.handle.net/1911/14803

Chicago Manual of Style (16^th Edition):

VAN ROOY, DAVID LEE. “DIGITAL ULTRASONIC WAVEFRONT RECONSTRUCTION IN THE NEAR FIELD.” 1971. Doctoral Dissertation, Rice University. Accessed March 01, 2021. http://hdl.handle.net/1911/14803.

MLA Handbook (7^th Edition):

VAN ROOY, DAVID LEE. “DIGITAL ULTRASONIC WAVEFRONT RECONSTRUCTION IN THE NEAR FIELD.” 1971. Web. 01 Mar 2021.

Vancouver:

VAN ROOY DL. DIGITAL ULTRASONIC WAVEFRONT RECONSTRUCTION IN THE NEAR FIELD. [Internet] [Doctoral dissertation]. Rice University; 1971. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/1911/14803.

Council of Science Editors:

VAN ROOY DL. DIGITAL ULTRASONIC WAVEFRONT RECONSTRUCTION IN THE NEAR FIELD. [Doctoral Dissertation]. Rice University; 1971. Available from: http://hdl.handle.net/1911/14803

Rice University

17. Claytor, Richard N. A microwave acoustic investigation of the spin-lattice interaction for F centers in quartz.

Degree: PhD, Natural Sciences, 1961, Rice University

URL: http://hdl.handle.net/1911/18218

► An investigation was made of the spin-lattice interaction of F centers in quartz through the use of 9.3 Gc acoustic waves. An upper limit to… (more)

Subjects/Keywords: Acoustics

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APA (6^th Edition):

Claytor, R. N. (1961). A microwave acoustic investigation of the spin-lattice interaction for F centers in quartz. (Doctoral Dissertation). Rice University. Retrieved from http://hdl.handle.net/1911/18218

Chicago Manual of Style (16^th Edition):

Claytor, Richard N. “A microwave acoustic investigation of the spin-lattice interaction for F centers in quartz.” 1961. Doctoral Dissertation, Rice University. Accessed March 01, 2021. http://hdl.handle.net/1911/18218.

MLA Handbook (7^th Edition):

Claytor, Richard N. “A microwave acoustic investigation of the spin-lattice interaction for F centers in quartz.” 1961. Web. 01 Mar 2021.

Vancouver:

Claytor RN. A microwave acoustic investigation of the spin-lattice interaction for F centers in quartz. [Internet] [Doctoral dissertation]. Rice University; 1961. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/1911/18218.

Council of Science Editors:

Claytor RN. A microwave acoustic investigation of the spin-lattice interaction for F centers in quartz. [Doctoral Dissertation]. Rice University; 1961. Available from: http://hdl.handle.net/1911/18218

Rice University

18. Closmann, Philip Joseph. Ultrasonic velocity measurements on potassium chrome alum.

Degree: PhD, Natural Sciences, 1953, Rice University

URL: http://hdl.handle.net/1911/18219

► The velocity of propagation of longitudinal sound waves in a single crystal of potassium chrome alum was measured as a function of temperature. The waves… (more)

Subjects/Keywords: Acoustics

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APA (6^th Edition):

Closmann, P. J. (1953). Ultrasonic velocity measurements on potassium chrome alum. (Doctoral Dissertation). Rice University. Retrieved from http://hdl.handle.net/1911/18219

Chicago Manual of Style (16^th Edition):

Closmann, Philip Joseph. “Ultrasonic velocity measurements on potassium chrome alum.” 1953. Doctoral Dissertation, Rice University. Accessed March 01, 2021. http://hdl.handle.net/1911/18219.

MLA Handbook (7^th Edition):

Closmann, Philip Joseph. “Ultrasonic velocity measurements on potassium chrome alum.” 1953. Web. 01 Mar 2021.

Vancouver:

Closmann PJ. Ultrasonic velocity measurements on potassium chrome alum. [Internet] [Doctoral dissertation]. Rice University; 1953. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/1911/18219.

Council of Science Editors:

Closmann PJ. Ultrasonic velocity measurements on potassium chrome alum. [Doctoral Dissertation]. Rice University; 1953. Available from: http://hdl.handle.net/1911/18219

University of Cincinnati

19. Matsumura, Yuya. Four research topics on new acoustic liner concepts and modal propagation measurement.

Degree: MS, Engineering : Aerospace Engineering, 2008, University of Cincinnati

URL: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1212076970

► Four different studies of acoustic liners and measurement techniques are presented in this thesis. The titles of these investigations are as follows: The possible… (more)

▼ Four different studies of acoustic liners and measurement techniques are presented in this thesis. The titles of these investigations are as follows: The possible use of bulk absorbers in engine nacelle liners The effect of transwall sound propagation in the honeycomb core of an acoustic liner The potential of piezzo-electric actuators to control the impedance of single layer liners The development of the multi modal acoustic measurement technique in the flow duct A wide range of previously published work on physical and prediction models for bulk absorbers was studied. An empirical correlation of the impedance established by M. E. Delany and E. N. Bazley was chosen for the impedance computation. With this method, the impedance of bulk absorbers was computed with several configurations. Then, the sound suppression data for bulk absorbers in a fan-exhaust duct of a high bypass turbofan engine were calculated and compared to the corresponding suppression data for conventional liners. New liner samples were designed and fabricated to investigate the effects of the transwall sound propagation in the honeycomb core of a single layer acoustic liner. A method for impedance measurement with grazing incident sound was specifically developed for this investigation. This method is based on the two-dimensional wave propagation theory. Experiments were conducted to observe the validity of the new measurement method. The potential use of a piezzo-electric actuator device for active control of the acoustic impedance of a single layer acoustic liner was also studied. The absorption coefficient of the device was measured in the wave tube with phase differences between the incident sound and the device excitation signal. Results showed that the absorption coefficient could be improved by adjusting the phase and the amplitude of the excitation signal for the piezoelectric actuator. Finally, a multi modal measurement technique with 16 transducers was developed. This technique will be used for acoustic measurements in a flow duct apparatus. The method was tested in a prototype duct which had the same cross section as the flow duct. The sudden change of the energy flux at cut-on frequency and the energy reduction by the sound absorber were observed. As these results agreed with what was expected from theory, it was concluded that the method was properly established.

Subjects/Keywords: Acoustics

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APA (6^th Edition):

Matsumura, Y. (2008). Four research topics on new acoustic liner concepts and modal propagation measurement. (Masters Thesis). University of Cincinnati. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=ucin1212076970

Chicago Manual of Style (16^th Edition):

Matsumura, Yuya. “Four research topics on new acoustic liner concepts and modal propagation measurement.” 2008. Masters Thesis, University of Cincinnati. Accessed March 01, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1212076970.

MLA Handbook (7^th Edition):

Matsumura, Yuya. “Four research topics on new acoustic liner concepts and modal propagation measurement.” 2008. Web. 01 Mar 2021.

Vancouver:

Matsumura Y. Four research topics on new acoustic liner concepts and modal propagation measurement. [Internet] [Masters thesis]. University of Cincinnati; 2008. [cited 2021 Mar 01]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1212076970.

Council of Science Editors:

Matsumura Y. Four research topics on new acoustic liner concepts and modal propagation measurement. [Masters Thesis]. University of Cincinnati; 2008. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1212076970

The Ohio State University

20. Horstemeyer, Mark. The Determination of Failure Mechanisms in the Fatigue of Unidirectional Composites by the Use of Acoustic Emissions.

Degree: MS, Mechanical Engineering, 1987, The Ohio State University

URL: http://rave.ohiolink.edu/etdc/view?acc_num=osu1380544561

► The fatigue failure mechanisms of three unidirectional laminated composite material systems (consisting of a common fiber in three varying matrices) were investigated. Static tension tests… (more)

Subjects/Keywords: Acoustics

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APA (6^th Edition):

Horstemeyer, M. (1987). The Determination of Failure Mechanisms in the Fatigue of Unidirectional Composites by the Use of Acoustic Emissions. (Masters Thesis). The Ohio State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=osu1380544561

Chicago Manual of Style (16^th Edition):

Horstemeyer, Mark. “The Determination of Failure Mechanisms in the Fatigue of Unidirectional Composites by the Use of Acoustic Emissions.” 1987. Masters Thesis, The Ohio State University. Accessed March 01, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=osu1380544561.

MLA Handbook (7^th Edition):

Horstemeyer, Mark. “The Determination of Failure Mechanisms in the Fatigue of Unidirectional Composites by the Use of Acoustic Emissions.” 1987. Web. 01 Mar 2021.

Vancouver:

Horstemeyer M. The Determination of Failure Mechanisms in the Fatigue of Unidirectional Composites by the Use of Acoustic Emissions. [Internet] [Masters thesis]. The Ohio State University; 1987. [cited 2021 Mar 01]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1380544561.

Council of Science Editors:

Horstemeyer M. The Determination of Failure Mechanisms in the Fatigue of Unidirectional Composites by the Use of Acoustic Emissions. [Masters Thesis]. The Ohio State University; 1987. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1380544561

21. Zhang, Ziyin. Nonlinear Assessment of Material and Interface Imperfections Based on Non-Collinear Shear Wave Mixing.

Degree: MS, Engineering and Applied Science: Aerospace Engineering, 2016, University of Cincinnati

URL: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1458814847

► Non-collinear shear wave mixing has been reported to exhibit potential for assessing the additional nonlinearity caused by both bulk material degradation and interface imperfections between… (more)

▼ Non-collinear shear wave mixing has been reported to exhibit potential for assessing the additional nonlinearity caused by both bulk material degradation and interface imperfections between solids. When this technique is used to assess the material bulk nonlinearity, certain resonance condition has to be satisfied while when it is used to assess the nonlinearity of an imperfect plane interface between two half-solids, the resonance condition can be relaxed. However, even when misaligned from the bulk resonance conditions, this technique is still somewhat sensitive to the intrinsic bulk nonlinearity and the relatively strong bulk nonlinearity of the surrounding material adversely reduces the nonlinear contrast produced by interface imperfections.In an effort to increase the nonlinear contrast produced by the imperfect interfaces, this research focused on conducting a combined analytical and computational investigation to identify the optimal inspection conditions for ultrasonic characterization of imperfect interfaces based on non-collinear shear wave mixing. The mechanism of nonlinear shear wave mixing technique was further investigated to identify the main factors which affect the strength of the detected bulk nonlinearity of the material. Then two analytical models for nonlinear imperfect interfaces were developed by using a finite nonlinear interfacial stiffness representation of an imperfect interface of vanishing thickness and a thin nonlinear interphase layer in a quasi-static approximation, respectively. Both analytical models were numerically verified by comparison to COMSOL finite element simulations. The results show that the imperfect interface generates the same amount of nonlinearity in both reflection and transmission fields and detecting the nonlinear reflection completely eliminates the adverse influence of bulk nonlinearity and therefore increases the nonlinear contrast generated by the imperfect interface. The feasibility of detecting the nonlinear reflection from the imperfect interface has also been confirmed to be possible by the experiment on Ti-6Al-4V diffusion bonded specimens using enhanced non-collinear ultrasonic wave mixing system implemented with a novel four-way polarity flipping technique. Advisors/Committee Members: Nagy, Peter (Committee Chair).

Subjects/Keywords: Acoustics

11 more images…

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APA (6^th Edition):

Zhang, Z. (2016). Nonlinear Assessment of Material and Interface Imperfections Based on Non-Collinear Shear Wave Mixing. (Masters Thesis). University of Cincinnati. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=ucin1458814847

Chicago Manual of Style (16^th Edition):

Zhang, Ziyin. “Nonlinear Assessment of Material and Interface Imperfections Based on Non-Collinear Shear Wave Mixing.” 2016. Masters Thesis, University of Cincinnati. Accessed March 01, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1458814847.

MLA Handbook (7^th Edition):

Zhang, Ziyin. “Nonlinear Assessment of Material and Interface Imperfections Based on Non-Collinear Shear Wave Mixing.” 2016. Web. 01 Mar 2021.

Vancouver:

Zhang Z. Nonlinear Assessment of Material and Interface Imperfections Based on Non-Collinear Shear Wave Mixing. [Internet] [Masters thesis]. University of Cincinnati; 2016. [cited 2021 Mar 01]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1458814847.

Council of Science Editors:

Zhang Z. Nonlinear Assessment of Material and Interface Imperfections Based on Non-Collinear Shear Wave Mixing. [Masters Thesis]. University of Cincinnati; 2016. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1458814847

Rutgers University

22. Kelsten, Matthew, 1994-. Modeling of acoustic waves in pipes with impedance walls and double roots.

Degree: MS, Mechanical and Aerospace Engineering, 2018, Rutgers University

URL: https://rucore.libraries.rutgers.edu/rutgers-lib/59132/

► Non-Hermitian systems can exhibit exceptional points (EPs) at which modes coalesce. The connection between EPs and acoustic damping goes back to the observation of Cremer… (more)

Subjects/Keywords: Architectural acoustics

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APA (6^th Edition):

Kelsten, Matthew, 1. (2018). Modeling of acoustic waves in pipes with impedance walls and double roots. (Masters Thesis). Rutgers University. Retrieved from https://rucore.libraries.rutgers.edu/rutgers-lib/59132/

Chicago Manual of Style (16^th Edition):

Kelsten, Matthew, 1994-. “Modeling of acoustic waves in pipes with impedance walls and double roots.” 2018. Masters Thesis, Rutgers University. Accessed March 01, 2021. https://rucore.libraries.rutgers.edu/rutgers-lib/59132/.

MLA Handbook (7^th Edition):

Kelsten, Matthew, 1994-. “Modeling of acoustic waves in pipes with impedance walls and double roots.” 2018. Web. 01 Mar 2021.

Vancouver:

Kelsten, Matthew 1. Modeling of acoustic waves in pipes with impedance walls and double roots. [Internet] [Masters thesis]. Rutgers University; 2018. [cited 2021 Mar 01]. Available from: https://rucore.libraries.rutgers.edu/rutgers-lib/59132/.

Council of Science Editors:

Kelsten, Matthew 1. Modeling of acoustic waves in pipes with impedance walls and double roots. [Masters Thesis]. Rutgers University; 2018. Available from: https://rucore.libraries.rutgers.edu/rutgers-lib/59132/

Penn State University

23. Walsh, Gregory Daniel. A PRELIMINARY ACOUSTIC INVESTIGATION OF A COAXIAL HELICOPTER IN HIGH-SPEED FLIGHT.

Degree: 2016, Penn State University

URL: https://submit-etda.libraries.psu.edu/catalog/c534fn92g

► The desire for a vertical takeoff and landing (VTOL) aircraft capable of high forward flight speeds is very strong. Compound lift-offset coaxial helicopter designs have… (more)

Subjects/Keywords: Acoustics; Coaxial Helicopter; Rotorcraft; Rotorcraft Acoustics; Helicopter

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APA (6^th Edition):

Walsh, G. D. (2016). A PRELIMINARY ACOUSTIC INVESTIGATION OF A COAXIAL HELICOPTER IN HIGH-SPEED FLIGHT. (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/c534fn92g

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Walsh, Gregory Daniel. “A PRELIMINARY ACOUSTIC INVESTIGATION OF A COAXIAL HELICOPTER IN HIGH-SPEED FLIGHT.” 2016. Thesis, Penn State University. Accessed March 01, 2021. https://submit-etda.libraries.psu.edu/catalog/c534fn92g.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Walsh, Gregory Daniel. “A PRELIMINARY ACOUSTIC INVESTIGATION OF A COAXIAL HELICOPTER IN HIGH-SPEED FLIGHT.” 2016. Web. 01 Mar 2021.

Vancouver:

Walsh GD. A PRELIMINARY ACOUSTIC INVESTIGATION OF A COAXIAL HELICOPTER IN HIGH-SPEED FLIGHT. [Internet] [Thesis]. Penn State University; 2016. [cited 2021 Mar 01]. Available from: https://submit-etda.libraries.psu.edu/catalog/c534fn92g.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Walsh GD. A PRELIMINARY ACOUSTIC INVESTIGATION OF A COAXIAL HELICOPTER IN HIGH-SPEED FLIGHT. [Thesis]. Penn State University; 2016. Available from: https://submit-etda.libraries.psu.edu/catalog/c534fn92g

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

24. Rowley, William. Mathematical modelling of novel metamaterials for noise reduction applications.

Degree: PhD, 2018, University of Manchester

URL: https://www.research.manchester.ac.uk/portal/en/theses/mathematical-modelling-of-novel-metamaterials-for-noise-reduction-applications(7ce8e9fb-4c2c-4637-ac89-c156949f9a27).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.764627

► In this thesis we investigate acoustic metamaterials and how they can influence incident sound waves. Specifically we are interested in the mathematical technique of transformation… (more)

Subjects/Keywords: 510; Metamaterials; Acoustics; Transformation acoustics; Homogenisation

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APA (6^th Edition):

Rowley, W. (2018). Mathematical modelling of novel metamaterials for noise reduction applications. (Doctoral Dissertation). University of Manchester. Retrieved from https://www.research.manchester.ac.uk/portal/en/theses/mathematical-modelling-of-novel-metamaterials-for-noise-reduction-applications(7ce8e9fb-4c2c-4637-ac89-c156949f9a27).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.764627

Chicago Manual of Style (16^th Edition):

Rowley, William. “Mathematical modelling of novel metamaterials for noise reduction applications.” 2018. Doctoral Dissertation, University of Manchester. Accessed March 01, 2021. https://www.research.manchester.ac.uk/portal/en/theses/mathematical-modelling-of-novel-metamaterials-for-noise-reduction-applications(7ce8e9fb-4c2c-4637-ac89-c156949f9a27).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.764627.

MLA Handbook (7^th Edition):

Rowley, William. “Mathematical modelling of novel metamaterials for noise reduction applications.” 2018. Web. 01 Mar 2021.

Vancouver:

Rowley W. Mathematical modelling of novel metamaterials for noise reduction applications. [Internet] [Doctoral dissertation]. University of Manchester; 2018. [cited 2021 Mar 01]. Available from: https://www.research.manchester.ac.uk/portal/en/theses/mathematical-modelling-of-novel-metamaterials-for-noise-reduction-applications(7ce8e9fb-4c2c-4637-ac89-c156949f9a27).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.764627.

Council of Science Editors:

Rowley W. Mathematical modelling of novel metamaterials for noise reduction applications. [Doctoral Dissertation]. University of Manchester; 2018. Available from: https://www.research.manchester.ac.uk/portal/en/theses/mathematical-modelling-of-novel-metamaterials-for-noise-reduction-applications(7ce8e9fb-4c2c-4637-ac89-c156949f9a27).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.764627

25. Cormack, John Michael Napier. Plane nonlinear shear waves in relaxing media.

Degree: PhD, Mechanical Engineering, 2019, University of Texas – Austin

URL: http://dx.doi.org/10.26153/tsw/5756

► This dissertation investigates plane nonlinear shear wave motion in a material that possesses a single relaxation mechanism. Derivations that employ three common yet separate descriptions… (more)

▼ This dissertation investigates plane nonlinear shear wave motion in a material that possesses a single relaxation mechanism. Derivations that employ three common yet separate descriptions of viscoelasticity are followed to arrive at the same mathematical model for a nonlinear and relaxing medium. The model is then used to obtain a single wave equation for linearly polarized particle motion, and two coupled wave equations for elliptically polarized particle motion. The resulting wave equations account for cubic nonlinearity and viscoelasticity in the form of a single relaxation mechanism. Progressive wave solutions are obtained from a Burgers-type evolution equation, thereby illustrating competition between nonlinearity and viscoelasticity in the wave motion. Energy loss due to relaxation is found insufficient to prevent the occurrence of multivalued solutions of the evolution equation when the wave amplitude is sufficiently large, thus indicating that the model is lacking essential physics in those cases. Multivalued solutions are prevented by employing weak shock theory in the obtained analytical solution for a step shock, or by introducing shear viscosity when solving the evolution equation numerically. A coordinate transformation is employed that allows simulation of waveform evolution up to and beyond the point of waveform overturning, which permits determination of the parameter space in which multivalued solutions exist. The analysis is also applied to nonlinear shear waves in media characterized by attenuation that is proportional to frequency raised to some power. Finally, standing nonlinear shear waves are investigated by developing an augmented Duffing equation that describes the nonlinear response of a shear wave resonator near its lowest resonance. Both linearly and elliptically polarized motions are described with analytical implicit solutions of the augmented Duffing equation. Advisors/Committee Members: Hamilton, Mark F. (advisor), Downer, Michael C (committee member), Haberman, Michael R (committee member), Spratt, Kyle S (committee member), Wilson, Preston S (committee member).

Subjects/Keywords: Nonlinear acoustics; Acoustics; Shear waves; Viscoelasticity

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Cormack, J. M. N. (2019). Plane nonlinear shear waves in relaxing media. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://dx.doi.org/10.26153/tsw/5756

Chicago Manual of Style (16^th Edition):

Cormack, John Michael Napier. “Plane nonlinear shear waves in relaxing media.” 2019. Doctoral Dissertation, University of Texas – Austin. Accessed March 01, 2021. http://dx.doi.org/10.26153/tsw/5756.

MLA Handbook (7^th Edition):

Cormack, John Michael Napier. “Plane nonlinear shear waves in relaxing media.” 2019. Web. 01 Mar 2021.

Vancouver:

Cormack JMN. Plane nonlinear shear waves in relaxing media. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2019. [cited 2021 Mar 01]. Available from: http://dx.doi.org/10.26153/tsw/5756.

Council of Science Editors:

Cormack JMN. Plane nonlinear shear waves in relaxing media. [Doctoral Dissertation]. University of Texas – Austin; 2019. Available from: http://dx.doi.org/10.26153/tsw/5756

The University of Wisconsin – Milwaukee

26. Mar, Li-Ya. covert contrast| The acquisition of Mandarin tone 2 and tone 3 in L2 production and perception.

Degree: 2016, The University of Wisconsin – Milwaukee

URL: http://pqdtopen.proquest.com/#viewpdf?dispub=10123605

► This dissertation investigates the occurrence of an intermediate stage, termed a covert contrast, in the acquisition of Mandarin Tone 2 (T2) and Tone 3… (more)

▼ This dissertation investigates the occurrence of an intermediate stage, termed a covert contrast, in the acquisition of Mandarin Tone 2 (T2) and Tone 3 (T3) by adult speakers of American English. A covert contrast is a statistically reliable distinction produced by language learners that is not perceived by native speakers of the target language (TL). In second language (L2) acquisition, whether a learner is judged as having acquired a TL phonemic contrast has largely depended on whether the contrast was perceived and transcribed by native speakers of the TL. However, categorical perception has shown that native listeners cannot perceive a distinction between two sounds that fall within the same perceptual boundaries on the continuum of the relevant acoustic cues. In other words, it is possible that native speakers of the TL do not perceive a phonemic distinction that is produced by L2 learners when that distinction occurs within a phonemic boundary of TL. The data for the study were gathered through two elicitations of tone production, a longitudinal analysis, and two perception tasks. There were three key findings. First, both elicitations showed that most of the L2 participants produced a covert contrast between T2 and T3 on at least one of the three acoustic measures used in the study. Second, the longitudinal analysis reveals that some L2 participants progressed from making a covert contrast to a later stage of implementing an overt one, thereby supporting the claim that making a covert contrast is an intermediate stage in the process of acquiring a L2 phonemic contrast. Third, results of the perceptual tasks showed no reliable difference in identifying and discriminating Mandarin T2 and T3 on the part of the L2 learners who produced a covert contrast and those who produced an overt contrast, indicating that there was no reliable difference in the two groups’ ability to perceive the target tones. In all, the occurrence of a covert contrast in the process of acquiring Mandarin T2 and T3 suggests that L2 acquisition of a tonal contrast is a gradient process, one in which an intermediate step occurs before a L2 learner reaches the final stage of implementing an overt contrast that is perceived as target-like by the native speakers of the TL.

Subjects/Keywords: Linguistics; Language; Acoustics

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APA (6^th Edition):

Mar, L. (2016). covert contrast| The acquisition of Mandarin tone 2 and tone 3 in L2 production and perception. (Thesis). The University of Wisconsin – Milwaukee. Retrieved from http://pqdtopen.proquest.com/#viewpdf?dispub=10123605

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Mar, Li-Ya. “covert contrast| The acquisition of Mandarin tone 2 and tone 3 in L2 production and perception.” 2016. Thesis, The University of Wisconsin – Milwaukee. Accessed March 01, 2021. http://pqdtopen.proquest.com/#viewpdf?dispub=10123605.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Mar, Li-Ya. “covert contrast| The acquisition of Mandarin tone 2 and tone 3 in L2 production and perception.” 2016. Web. 01 Mar 2021.

Vancouver:

Mar L. covert contrast| The acquisition of Mandarin tone 2 and tone 3 in L2 production and perception. [Internet] [Thesis]. The University of Wisconsin – Milwaukee; 2016. [cited 2021 Mar 01]. Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=10123605.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Mar L. covert contrast| The acquisition of Mandarin tone 2 and tone 3 in L2 production and perception. [Thesis]. The University of Wisconsin – Milwaukee; 2016. Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=10123605

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

The University of Alabama

27. Kavanaugh, Joshua Stephen. Dynamics of vacuum-sealed, double-leaf partitions.

Degree: 2016, The University of Alabama

URL: http://pqdtopen.proquest.com/#viewpdf?dispub=10006857

► The goal of this research is to investigate the feasibility and potential effectiveness of using vacuum-sealed, double-leaf partitions for applications in noise control. Substantial… (more)

Subjects/Keywords: Mechanical engineering; Acoustics

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APA (6^th Edition):

Kavanaugh, J. S. (2016). Dynamics of vacuum-sealed, double-leaf partitions. (Thesis). The University of Alabama. Retrieved from http://pqdtopen.proquest.com/#viewpdf?dispub=10006857

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Kavanaugh, Joshua Stephen. “Dynamics of vacuum-sealed, double-leaf partitions.” 2016. Thesis, The University of Alabama. Accessed March 01, 2021. http://pqdtopen.proquest.com/#viewpdf?dispub=10006857.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Kavanaugh, Joshua Stephen. “Dynamics of vacuum-sealed, double-leaf partitions.” 2016. Web. 01 Mar 2021.

Vancouver:

Kavanaugh JS. Dynamics of vacuum-sealed, double-leaf partitions. [Internet] [Thesis]. The University of Alabama; 2016. [cited 2021 Mar 01]. Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=10006857.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Kavanaugh JS. Dynamics of vacuum-sealed, double-leaf partitions. [Thesis]. The University of Alabama; 2016. Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=10006857

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

28. Hirsch, Adam. Moments of being| The topology of timbre and memory as a compositional process.

Degree: 2016, Mills College

URL: http://pqdtopen.proquest.com/#viewpdf?dispub=10117391

► This interdisciplinary study examines episodic memory and instrumental timbre as structural analogs, and explores the potential of their relationships within a compositional framework. The… (more)

Subjects/Keywords: Neurosciences; Music; Acoustics

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Hirsch, A. (2016). Moments of being| The topology of timbre and memory as a compositional process. (Thesis). Mills College. Retrieved from http://pqdtopen.proquest.com/#viewpdf?dispub=10117391

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Hirsch, Adam. “Moments of being| The topology of timbre and memory as a compositional process.” 2016. Thesis, Mills College. Accessed March 01, 2021. http://pqdtopen.proquest.com/#viewpdf?dispub=10117391.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Hirsch, Adam. “Moments of being| The topology of timbre and memory as a compositional process.” 2016. Web. 01 Mar 2021.

Vancouver:

Hirsch A. Moments of being| The topology of timbre and memory as a compositional process. [Internet] [Thesis]. Mills College; 2016. [cited 2021 Mar 01]. Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=10117391.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Hirsch A. Moments of being| The topology of timbre and memory as a compositional process. [Thesis]. Mills College; 2016. Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=10117391

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Pittsburgh

29. Corey, Charles. Pitch and Harmony in Gyorgy Ligeti's "Hamburg Concerto" and "Syzygy" for String Quartet.

Degree: 2011, University of Pittsburgh

URL: http://pqdtopen.proquest.com/#viewpdf?dispub=3472016

► The analysis component of this dissertation focuses on intricate and complex pitch relationships in György Ligeti's last work, the Hamburg Concerto. This piece… (more)

▼ The analysis component of this dissertation focuses on intricate and complex pitch relationships in György Ligeti's last work, the Hamburg Concerto. This piece uses two distinct tuning systems—twelve tone equal temperament and just intonation—throughout its seven movements. Often, these two systems are used simultaneously, creating complex harmonic relationships. This combination allows Ligeti to exploit the unique features of each system and explore their relationships to each other. Ligeti's just intonation in the Hamburg Concerto comes mainly from the five French horns, who are instructed to keep their hands out of the bell to allow the instrument to sound its exact harmonics. The horns themselves, however, are tuned to varying different fundamentals, creating a constantly changing series of just-intoned pitches anchored above an equal-tempered bass. This method of generating just-intoned intervals adds a second layer to the relationship between equal temperament and just intonation. This paper focuses on creating ways to understand this relationship, and describing the ramifications of these tunings as they unfold throughout the piece. Ligeti very carefully crafts this work in a way that creates a balance between the systems. Research done at the Paul Sacher Stiftung has uncovered a significant collection of errors in the published score. Clearing up these discrepancies allows for a much more accurate and more informed analysis. Throughout this dissertation, mistakes are corrected, and several aspects of the score are clarified. The tuning systems are described, and a likely tuning scheme for the horns is posited. (The analytical component of the dissertation delves into the many varying intervals which all fit into one interval class—a feature that is best explored when two distinct tuning systems are juxtaposed.) A language is created herein to better understand these pitch relationships that fit neither into equal temperament nor just intonation. The analysis clearly shows that very simple musical intervals turn out to be cornerstones of this piece, traceable throughout the entire Hamburg Concerto. The composition, Syzygy for string quartet, is written in just intonation. Through four movements, the relationships evoked by the titles (always groups of homonyms) are examined and illuminated.

Subjects/Keywords: Music; Physics, Acoustics

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Corey, C. (2011). Pitch and Harmony in Gyorgy Ligeti's "Hamburg Concerto" and "Syzygy" for String Quartet. (Thesis). University of Pittsburgh. Retrieved from http://pqdtopen.proquest.com/#viewpdf?dispub=3472016

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Corey, Charles. “Pitch and Harmony in Gyorgy Ligeti's "Hamburg Concerto" and "Syzygy" for String Quartet.” 2011. Thesis, University of Pittsburgh. Accessed March 01, 2021. http://pqdtopen.proquest.com/#viewpdf?dispub=3472016.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Corey, Charles. “Pitch and Harmony in Gyorgy Ligeti's "Hamburg Concerto" and "Syzygy" for String Quartet.” 2011. Web. 01 Mar 2021.

Vancouver:

Corey C. Pitch and Harmony in Gyorgy Ligeti's "Hamburg Concerto" and "Syzygy" for String Quartet. [Internet] [Thesis]. University of Pittsburgh; 2011. [cited 2021 Mar 01]. Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=3472016.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Corey C. Pitch and Harmony in Gyorgy Ligeti's "Hamburg Concerto" and "Syzygy" for String Quartet. [Thesis]. University of Pittsburgh; 2011. Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=3472016

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

30. Baumbusch, Brian. The lightbulb project| New music for new percussion instruments.

Degree: 2014, Mills College

URL: http://pqdtopen.proquest.com/#viewpdf?dispub=1549992

► This thesis is about the process behind building, tuning, and composing music for a new set of metallophones called the "Lightbulb" instruments. This project… (more)

Subjects/Keywords: Music; Physics, Acoustics

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Baumbusch, B. (2014). The lightbulb project| New music for new percussion instruments. (Thesis). Mills College. Retrieved from http://pqdtopen.proquest.com/#viewpdf?dispub=1549992

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Baumbusch, Brian. “The lightbulb project| New music for new percussion instruments.” 2014. Thesis, Mills College. Accessed March 01, 2021. http://pqdtopen.proquest.com/#viewpdf?dispub=1549992.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Baumbusch, Brian. “The lightbulb project| New music for new percussion instruments.” 2014. Web. 01 Mar 2021.

Vancouver:

Baumbusch B. The lightbulb project| New music for new percussion instruments. [Internet] [Thesis]. Mills College; 2014. [cited 2021 Mar 01]. Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=1549992.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Baumbusch B. The lightbulb project| New music for new percussion instruments. [Thesis]. Mills College; 2014. Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=1549992

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Open Access Theses and Dissertations