A new algorithm of converting two-channel audio materials to five-channel based on subband unsupervised adaptive filtering is proposed in this paper. This algorithm uses a subband analysis-processing-synthesis framework. In each subband, a robust stereo image is obtained using principle component analysis, and an effective energy re-distribution among surround channels is achieved by mapping cross-correlation between two input channels to a weighted panning matrix.
Driessen, Peter F.; Li, Yan
Affiliation: University of Victoria
AES Convention: 119 (October 2005) Paper Number: 6611
Publication Date: October 1, 2005
Subject: Miscellaneous Audio Topics
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