An Unsupervised Adaptive Filtering Approach of 2- to 5-Channel Upmix
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CONTRIBUTORS:
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CONFERENCE TITLE:
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CONF. LOCATION:
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None
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YEAR:
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2005
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PUB TYPE:
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Conference Paper
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SUBJECT(S):
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Audio Engineering
Digital Signal Processing
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DISCIPLINE:
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Engineering and Applied Sciences
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HTTP:
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http://www.aes.org/events/119/
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LANGUAGE:
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English
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PUB ID:
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103-420-742
(Last edited on
2005/10/25 12:29:09 GMT-6)
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SPONSOR(S):
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ABSTRACT:
A new algorithm of converting 2-channel audio materials to 5-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 principal component analysis, and an effective energy redistribution among surround channels is achieved by mapping cross-correlation between two input channels to a weighted panning matrix.
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