Thesis (Ph.D.)--Boston University / PLEASE NOTE: Boston University Libraries did not receive an Authorization To Manage form for this thesis or dissertation. It is therefore not openly accessible, though it may be available by request. If you are the author or principal advisor of this work and would like to request open access for it, please contact us at open-help@bu.edu. Thank you. / Responses of coincidence-detecting neurons are a direct function of the temporal structure of their input patterns. Quantitative studies of coincidence-detection provide insight into how neural processing of temporal information contributes to psychophysical performance. This study explored in detail the response properties of model coincidence-detection cells that receive inputs from auditory-nerve (AN) fibers. It also focused on the role of these model cells in coding of complex sounds related to psychophysical tasks for which temporal cues are believed to be important. Performance of model cells was evaluated quantitatively for different model parameters, including the width of the coincidence window, the number of input AN fibers, the characteristic frequencies (CFs) of the input AN fibers, and mixed strengths of the inputs. Results suggest that model cells with low CFs are very sensitive to the phase relationship of the input AN responses. The response properties of the model cells were also compared with results of physiological studies, and the coincidence-detection model predicts several response properties that were previously believed to be difficult to explain. Models for psychophysical detection and discrimination were designed based on population responses of model coincidence cells. Quantitative predictions of masked detection suggest that the most sensitive model cells for detection are the cells whose input AN responses are out of phase when a tone is added to the noise. The temporal structure in AN responses changes with signal-to-noise ratio and does not change as the overall level changes; thus, this model predicts psychophysical performance better than energy-based models under conditions in which the overall level of the stimulus varies randomly from trial to trial. The comparison of the coincidence-detection model and models based on other cues (e.g. envelope detector and channel theory) and implications for the theory of complex sound processing are also discussed. / 2031-01-01

Thesis (M. Phil.)--Hong Kong University of Science and Technology, 2002. / Includes bibliographical references (leaves 56-61). Also available in electronic version. Access restricted to campus users.

No description available.

The creative project was twofold: Firstly, a large high speed DEC-10 interactive computer, located at Ball State University, was programmed, using FORTRAN language. The program is to be used by music students in real-time, on-line interactive classroom situations via a special teletype terminal located in the classroom. Secondly, a D17B mini-computer, located in the Electronic Music Systems Studio at Ball State University, was programmed using quasi-octal machine language for on-line, real-time interaction in conjunction with the ARP-2500 music synthesizer located in the same studio. This capability provides an adjunct to other compositional tools already available to the composer in this studio.The principal thrust of the software programs in both of these contexts was the on-line and automatic manipulation, handling, editing and control of pitch sets during interactive conversation with a computer via teletype or synthesizer keyboard. / School of Music

Thesis (M.Phil.)--Hong Kong University of Science and Technology, 2005. / Includes bibliographical references (leaves 70-73). Also available in electronic version.

Thesis (M.Phil.)--Hong Kong University of Science and Technology, 2006. / Includes bibliographical references (leaves 83-85). Also available in electronic version.

No description available.

Microcomputer-based music synthesis hardware is being developed at North Texas State University (NTSU). The work described in this paper continues this effort to develop hardware designs for inexpensive, but good quality, sound synthesizers. In order to pursue their activities, researchers in computer assisted instruction in music theory, psychoacoustics, and music composition need quality sound sources. The ultimate goal of my research is to develop good quality sound synthesis hardware which can fill these needs economically. This paper explores three topics: 1) how a computer makes music--a short nontechnical description; 2) what has been done previously--a review of the literature; and 3) what factors bear on the quality of microcomputer-based systems, including encoding of musical passages, software development, and hardware design. These topics lead to the discussion of a particular sound synthesizer which the author has designed.

Thesis (M.S.V.S.)--Massachusetts Institute of Technology, Dept. of Architecture, 1981. / MICROFICHE COPY AVAILABLE IN ARCHIVES AND ROTCH. / Includes bibliographical references (leaf 50). / Sound inherently has a spatial quality, an ability to be localized in three dimensions. This is the essence of 3-D, or spatial, sound. A system capable of recording sounds as digitized samples and playing them back in a localized fashion was developed in the course of this research. This sound system combines special hardware and interactive software to create a system more flexible and powerful than previous systems. The spatial qualities of 3-D sound contribute to man's ability to interact with sound as data. An application which capitalized on these qualities was developed, allowing the user to interact with 3-D sound in a spatial environment. This application, called the Spatial Audio Notemaker, was not unlike a bulletin board, where the paper notes were recorded messages and the bulletin board was the user's environment. Using the Spatial Audio Notemaker, exploration into the manipulation of 3-D sound and the necessary interaction (using voice and gesture) and feedback (both visual and audio) to aid in this manipulation was accomplished. / by Mark Aaron Vershel. / M.S.V.S.

Thesis (Ph. D.)--Ohio State University, 2007. / Title from first page of PDF file. Includes bibliographical references (p. 156-168).