Dolby AC-3 is a flexible audio data compression technology capable of encoding a range of audio channel formats into a low-rate bit stream. Channel formats range from monophonic to 5.1 channels and may include a number of associated audio services. Based on a transform filter bank and psychoacoustics, AC-3 includes the novel features of transmission of a variable frequency resolution spectral envelope and hybrid backward/forward adaptive bit allocation.

Authors: Todd, Craig C.; Davidson, G. A.; Davis, M. F.; Fielder, Louis D.; Link, B. D.; Vernon, S.
Affiliation: Dolby Laboratories, San Francisco, CA
AES Convention: 96 (February 1994) Paper Number: 3796
Publication Date: February 1, 1994
Subject: Bit Rate Reduction Schemes

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