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Journal Article

Hierarchical Bandwidth Limitations of Surround Sound—Part I: Psychoacoustically Hierarchical Transform

Authors: Jiao, Yu; Zieli´nski, Slawomir; Rumsey, Francis

Journal of the Audio Engineering Society · Volume 56 · Issue 12 · pp. 1057–1068 · December 2008

Abstract

In order to reduce the increase data rate of multichannel surround sound, a hierarchical bandwidth limiting technique is proposed. In this approach, the original signals are transformed into a hierarchical representation, which is then band-limited and re-transformed back into the original representation. Subjective listening tests were used to evaluate two such approaches: Gerzon MSBTF and Karhumen–Lòeve transforms. The results showed that the signal-dependent hierarchical encoding performed better than the signal-independent techniques, but both techniques were better than conventional methods.

Details

Publication
Journal of the Audio Engineering Society
Volume
56
Issue
12
Pages
1057–1068
Publication date
December 6, 2008
Affiliation
Institute of Sound Recording, University of Surrey (See document for exact affiliation information.)
Type
Journal Article