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sn#096535 filedate 1974-04-10 generic text, type T, neo UTF8
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COMPUTER SIMULATION OF MUSIC INSTRUMENT
TONES IN REVERBERANT SPACES
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Leland C. Smith & John M. Chowning - Department of Music
John M. Grey - Psychology, James A. Moorer - Computer Science, Loren Rush - Music
Consultant, John R. Pierce - California Institute of Technology
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Faculty Advisory Group
James B. Angell - Department of Electrical Engineering
John McCarthy - Department of Computer Science
Earl D. Schubert, Hearing & Speech Sciences, School of Medicine
Roger N. Shepard, Department of Psychology
Head of External Advisory Group, Max V. Mathews - Bell Telephone Laboratories
Stanford University, March 1974
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ABSTRACT
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Novel and powerful computer simulation techniques have been developed which
produce realistic music instrument tones that can be dynamically
moved to arbitrary positions within a simulated reverberant space of
arbitrary size by means of computer control of four loudspeakers.
Research support for the simulation of complex auditory signals
and environments will allow the further development and
application of computer techniques for digital signal processing, graphics,
and computer based subjective scaling, toward the analysis, data reduction,
and synthesis of music instrument tones and reverberant spaces.
Main areas of inquiry are: 1) those physical characteristics of a tone which
have perceptual significance, 2) the simplest data base for perceptual
representation of a tone, 3) the effect of reverberation
and location on the perception of a tone, and 4) optimum artificial
reverberation techniques and position and number of loudspeakers for producing a
full illusion of azimuth, distance, and altitude. These areas have
been scantily investigated, if at all, and they bear on a larger more
profound problem of intense cross-disciplinary interest: the
cognitive processing and organization of auditory stimuli.
The advanced state of computer technology now makes possible the realization of
a small computer system for the purpose of real-time simulation.
The proposed research includes the specification of, and program
development for, a small special purpose computing system for real-time,
interactive acoustical signal processing. The research in simulation
and system development has significant applications in a variety
of areas including psychology, education, architectural acoustics,
and audio engineering.
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