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Convention Paper

MPEG-4 Low Delay Audio Coding Based on the AAC Codec

Authors: Allamanche, Eric; Geiger, Ralf; Herre, Juergen; Sporer, Thomas

AES Convention 106 · Paper 4929 · May 1999

Abstract

Perceptual audio coding is known to deliver high sound quality even at low bit rates for a broad range of audio signals. However, the total delay of the encoder/decoder chain is usually considerably higher than acceptable for two-way communication applications, such as teleconferencing. This paper discusses the primary sources of algorithmic delay in a perceptual audio codec and describes an MPEG-2 AAC-derived codec which was optimized for very low delay and accepted as the baseline of development for low-delay coding in MPEG-4 version 2 audio.

Details

Published in
AES Convention 106
AES Convention
106
Paper number
4929
Publication date
May 6, 1999
Session subject
Audio Coding
Affiliation
FhG-IIS, Erlangen,Germany (See document for exact affiliation information.)
Type
Convention Paper