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Conference Paper

An Algebraic Theory of 3D Sound Synthesis with Loudspeakers

Authors: Flikkema, Paul G.

AES Conference: 22nd International Conference: Virtual, Synthetic, and Entertainment Audio · Paper 000199 · June 2002

Abstract

The problem of reproducing J signals with K loudspeakers is considered. A algebraic, time-domain synthesis approach is developed that extends the multi-input multi-output inverse theorem (MINT) of Miyoshi and Kaneda. The approach is general and can encompass joint surround sound synthesis and loudspeaker/room correction. First, a discrete time-domain matrix description is developed that captures the effects of amplifiers, loudspeakers, and room acoustics. Based on this model, it is shown that exact synthesis is possible with practical reproduction apparatus only if K>J. Sufficient conditions that are based on impulse responses are also presented. The results are specialized to the case of zero-crosstalk transaural sound reproduction, and the theoretical importance of loudspeaker time alignment is illustrated. Finally, minimum-power exact synthesis is briefly described.

Details

Published in
AES Conference: 22nd International Conference: Virtual, Synthetic, and Entertainment Audio
Paper number
000199
Publication date
June 6, 2002
Session subject
Virtual, Synthetic and Entertainment Audio
Affiliation
Department of Electrical Engineering, Flagstaff, AZ (See document for exact affiliation information.)
Type
Conference Paper