Hierarchical Bandwidth Limitation Of Surround Sound Part I: Psychoacoustically Hierarchical Transform

摘要

In order to enable a saving in transmission or storage bandwidth for multichannel audio, a hierarchical bandwidth limitation technique is proposed. A series of listening tests were carried out to find a psychoacoustically optimized hierarchical transform for this purpose. The utility of two potentially suitable hierarchical transform techniques was investigated in this regard, and the covariance-based Karhunen-Loeve transform was found to represent a suitable solution.