Multichannel audio decorrelation for coding

Soledad Torres-Guijarro; Jon Ander Beracoechea Álava; Luis I. Ortiz-Berenguer; F. Javier Casajús-Quirós
DAFx-2003 - London
Within digital audio codification, the processing of multichannel signals has become one of the main fields of research. Current work on the subject look for effective ways to exploit the existing redundancy between the different channels in order to reduce the codification binary rate. This work studies the Karhunen-Loeve Transform (KLT) as a method of decorrelating multi-channel signals prior to coding. Results on codification via AAC are reported.