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Convention Paper

Coding Strategies and Quality Measure for Multichannel Audio

Authors: Torres-Guijarro, Soledad; Beracoechea-Alava, Jon Ander; Casajus-Quiros, F. Javier; Perez-Garcia, Isidoro

AES Convention 116 · Paper 6114 · May 2004

Abstract

The Karhunen-Loeve Transform (KLT) has proven to be an efficient method of decorrelating multichannel signals prior to coding. Careful bit rate allocation among decorrelated channels reduce the overall bit rate. In order to explore how bits are distributed in the coding process, a new quality measure of the reconstructed sound field is proposed: the binaural signal that the listener would perceive in a real environment is synthesized and evaluated by means of the standard Perceptual Audio Quality Measure (PEAQ). Results on codification via AAC with different kind of audio signals, bit allocations and multichannel arrangements are reported.

Details

Published in
AES Convention 116
AES Convention
116
Paper number
6114
Publication date
May 6, 2004
Session subject
Multichannel Sound; Wave Field Synthesis
Affiliation
Dept. Signals, Systems and Radiocommunications, Politechnical University of Madrid ; Dept. Electric and Electronic Engineering, European University of Madrid, Spain (See document for exact affiliation information.)
Type
Convention Paper