Method, device, encoder apparatus, decoder apparatus and audio system
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United States of America Patent
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Jun 5, 2018
Issued Date -
Aug 9, 2007
app pub date -
Mar 30, 2005
filing date -
Apr 5, 2004
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Abstract
Method for processing a stereo signal includes encoding an N-channel audio signal in a stereo signal (Lo, Ro) and spatial parameters (wl, wr), processing the stereo signal using the spatial parameters for generating a processed stereo signal (low, Row). The matrix of the processed stereo signal is described as the matrix of the stereo signal, multiplied by a filter matrix (H) having element that are filter functions (H1, H2, H3, H4) operated with spatial parameters (wl, wr) and a constant (a). The filter functions are time invariant and selected so that the matrix is invertible.
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