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Convention Paper

ATRAC: Adaptive Transform Acoustic Coding for MiniDisc

Authors: Tsutsui, Kyoya; Suzuki, Hiroshi; Shimoyoshi, Osamu; Sonohara, Mito; Akagiri, Kenzo; Heddle, Robert

AES Convention 93 · Paper 3456 · October 1992

Abstract

ATRAC is an audio coding system based on psychoacoustic principles. The input signal is divided into three sub-bands which are then transformed into the frequency domain using a variable block length. Transform coefficients are grouped into nonuniform bands to reflect the human auditory system, and then quantized on the basis of dynamic sensitivity and masking characteristics. ATRAC compresses Compact Disc audio to approximately one-fifth of the original data with virtually no loss in sound quality.

Details

Published in
AES Convention 93
AES Convention
93
Paper number
3456
Publication date
October 6, 1992
Session subject
Digital Innovations in Audio Technology
Affiliation
Sony Corporate Research Laboratoriesw Sinhagawa-ku, Tokyo, Japan (See document for exact affiliation information.)
Type
Convention Paper