Opens in a new tab

AES E-Library

← Back to search

Convention Paper

Optimal Prediction in Scalable Coding of Stereophonic Audio

Authors: Aggarwal, Ashish; Regunathan, Shankar L.; Rose, Kenneth

AES Convention 109 · Paper 5273 · September 2000

Abstract

An estimation-theoretic framework is proposed for prediction in scalable coding of stereophonic audio, which overcomes fundamental drawbacks of conventional prediction approaches. The framework offers the means to combine all the information available at the enhancement layer to produce the optimal signal estimate. The method efficiently exploits both interchannel and intrachannel redundancy without incurring additional side information. The proposed estimation-theoretic prediction is implemented within an MPEG-4-based scalable coder for stereophonic audio signals. Objective and subjective performance comparison on the MPEG-4 SQAM database shows that optimal prediction yields substantial bit-rate reduction while maintaining the same reproduction quality. The improvement is achieved at the cost of a modest increase in computational complexity.:

Details

Published in
AES Convention 109
AES Convention
109
Paper number
5273
Publication date
September 6, 2000
Session subject
Low Bit-Rate Coding
Affiliation
University of California, Santa Barbara, CA (See document for exact affiliation information.)
Type
Convention Paper