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An experimental investigation of the anomalous behavior of underwater acoustic volume displacement sensorsGray, Michael Dean 05 1900 (has links)
No description available.
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Three-dimensional audio processorChristensen, David Paul 01 January 1997 (has links)
The thesis presents the principles, design, implementation, and test results of a prototype three-dimensional audio processor based upon the Analog Devices EZ-KIT Lite digital signal processing development platform. The three-dimensional audio processor simulates a virtual sound source that is free to move in three-dimensional space using a monaural audio source for input, a personal computer and mouse for source position control, and six loudspeakers arranged in a Cartesian array for output. Source distance, direction, and speed cues are produced by the processor using the Inverse Square Law, time delay, loudspeaker mixing, and sampling rate conversion by third-order polynomial interpolation. Test results confirm the performance of the three-dimensional audio processor.
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Blind adaptive dereverberation of speech signals using a microphone arrayBakir, Tariq Saad 07 June 2004 (has links)
No description available.
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Real-time acoustic source localization with passive microphone arraysHuang, Yiteng (Arden) 05 1900 (has links)
No description available.
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Detection of immature rice weevils, Sitophilus oryzae L. (Curculionidae, Coleoptera) by audio amplificationPesho, George Robert. January 1954 (has links)
LD2668 .T4 1954 P47 / Master of Science
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An investigation into the use of intuitive control interfaces and distributed processing for enhanced three dimensional sound localizationHedges, Mitchell Lawrence January 2016 (has links)
This thesis investigates the feasibility of using gestures as a means of control for localizing three dimensional (3D) sound sources in a distributed immersive audio system. A prototype system was implemented and tested which uses state of the art technology to achieve the stated goals. A Windows Kinect is used for gesture recognition which translates human gestures into control messages by the prototype system, which in turn performs actions based on the recognized gestures. The term distributed in the context of this system refers to the audio processing capacity. The prototype system partitions and allocates the processing load between a number of endpoints. The reallocated processing load consists of the mixing of audio samples according to a specification. The endpoints used in this research are XMOS AVB endpoints. The firmware on these endpoints were modified to include the audio mixing capability which was controlled by a state of the art audio distribution networking standard, Ethernet AVB. The hardware used for the implementation of the prototype system is relatively cost efficient in comparison to professional audio hardware, and is also commercially available for end users. the successful implementation and results from user testing of the prototype system demonstrates how it is a feasible option for recording the localization of a sound source. The ability to partition the processing provides a modular approach to building immersive sound systems. This removes the constraint of a centralized mixing console with a predetermined speaker configuration.
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Design sonoro e interação em instalações audiovisuais / Sound design and interaction in audiovisual installationsMamedes, Clayton Rosa, 1983- 07 February 2015 (has links)
Orientadores: Denise Hortência Lopes Garcia, Jônatas Manzolli / Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Artes / Made available in DSpace on 2018-08-27T20:30:38Z (GMT). No. of bitstreams: 1
Mamedes_ClaytonRosa_D.pdf: 10108591 bytes, checksum: 26cc15811eccc58549c0ee63faad6472 (MD5)
Previous issue date: 2015 / Resumo: A presente tese descreve o processo criativo das instalações audiovisuais interativas Abstrações, Cerejeira e Caminho das águas, relacionando-as ao objetivo principal da pesquisa, que consiste em analisar os mecanismos de integração entre o projeto conceitual de cada instalação, seu design sonoro e os processos que modelam a interação dos visitantes com a obra. Este objetivo é alcançado através de uma abordagem prática ao processo de pesquisa, a qual foi realizada através da criação de novas obras e a respectiva avaliação sobre o comportamento dos visitantes, processo repetido a cada etapa deste trabalho. O trabalho contempla a análise e a localização de nossas referências para os conceitos de instalações, design sonoro e interatividade. Apresentamos uma proposta para estruturação do design sonoro baseada na espectro-morfologia de Denis Smalley, utilizando este conjunto teórico como modelo para estruturar a relação entre o som e o conteúdo referencial da obra, e entre o som e o modelo interativo que se pretende abrir aos visitantes. Implementamos um conjunto de descritores de propriedades físicas para o movimento e desenvolvemos um conjunto de descritores baseados na fusão de dados sobre as propriedades físicas do movimento, com a intenção de descrever as classes de Esforço para a Análise de Movimento Laban. Estes descritores objetivam suprir deficiências do modelo interativo utilizado no início da pesquisa, durante o desenvolvimento das instalações Abstrações e Cerejeira. A instalação Caminho das águas integra os desenvolvimentos alcançados pela pesquisa: uma nova abordagem para a relação entre o projeto conceitual da obra, seu design sonoro e o modelo interativo revisado. Um extenso estudo com participantes aplicado sobre esta instalação permitiu avaliarmos os resultados alcançados a partir das hipóteses levantadas durante o desenvolvimento da pesquisa / Abstract: This thesis presents the creative process of the interactive audiovisual installations Abstrações, Cerejeira and Caminho das águas, relating them to the main objective of the research, which consists in the analysis of the models that integrate the conceptual project of each installation, its sound design and the interactive processes that model the relation between visitors and the work. This objective was achieved through a practical approach to the research process and was implemented by the designing of new installations and the respective evaluation about the behavior of visitors. This process was repeated at each step of the research. This work includes the analysis and origin of our references to the concepts of installations, sound design and interactivity. We present a proposal to structure sound design based on the spectro-morphology developed by Denis Smalley. We propose the use of this theoretical corpus as a model to structure the relation between the sound and the referential content of the work, and between the sound and the interactive model that is intended to be open for visitors' participation. We have implemented a set of descriptors to retrieve physical properties of the movement. We also developed a set of descriptors based on data fusion from these physical properties, intending to describe the classes of Effort for the Laban Movement Analysis. These descriptors aim to fulfill shortcomings observed in the interactive model adopted in the early part of the research, specifically during the development of the installations Abstrações e Cerejeira. The installation Caminho das águas integrates the developments achieved by this research: a new approach to the relation among the conceptual project of a work, its sound design and the interactive model adopted. An extensive study with participants applied over this installation enabled us to evaluate the results achieved from the hypotheses raised during the development of the research / Doutorado / Processos Criativos / Doutor em Música
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