Real-time audio/music processing of even moderate complexity needs multiple digital signal processors. Synchronous multiprocessing is required for hardware efficiency; yet efficient development of high-level multiprocessing software needs asynchronous DSPs. While processing, DSPs exchange samples with A/D/A converters and disk drives, update programs and parameters, and communicate parameters, state, and samples with other DSPs. Shared and/or private memory, bus structure, arbitration, real-time operating systems, and cost tradeoffs between architectures are discussed.

Author: Snell, John M.
Affiliation: Ttmbre Engineering, Box 337, San Geronimo, CA
AES Conference: 7th International Conference: Audio in Digital Times (May 1989)
Paper Number: 7-046
Publication Date: May 1, 1989
Subject: Audio in Digital Times

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