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Convention Paper

Super Bit Mapping: Psychoacoustically Optimized Digital Recording

Authors: Akune, Makoto; Heddle, Robert; Akagiri, Kenzo

AES Convention 93 · Paper 3371 · October 1992

Abstract

Super bit mapping uses psychoacoustic principles and critical band analysis to maximize the sound quality of 16-bit digital audio. 20-bit recordings are quantized to 16 bits using an adaptive error-feedback filter. This filter shapes the quantization error into an optimal spectrum as determined by the short-term masking and equi-loudness characteristics of the input signal. Through this technique, the perceptual quality of 20-bit sound is available on a standard compact disc.

Details

Published in
AES Convention 93
AES Convention
93
Paper number
3371
Publication date
October 6, 1992
Session subject
Digital Signal Processing
Affiliation
Sony Corporate Research Laboratories, Kitashinagawa, Shinagawa-ku, Tokyo, Japan (See document for exact affiliation information.)
Type
Convention Paper