| 摘要 |
A sound processing system receives a stereo signal which, by a segmenter (109) is divided into stereo time- frequency signal segments, each of which may correspond to a frequency domain sample in a given time segment. A decomposer (111) decomposes the time- frequency signal segments by for each pair of stereo time-frequency signal segments performing the steps of: determining a similarity measure indicative of a degree of similarity of the stereo time frequency signal segments; generating a sum time- frequency signal segment as a sum of the stereo time-frequency signal segments; and generating a centre time- frequency signal segment from the sum time- frequency signal segment and a pair of side stereo time- frequency segments from the pair of stereo time- frequency signal segments in response to the similarity measure. A signal generator (113) then generates a multi-channel signal comprising a centre signal generated from the sum time- frequency signal segments and side signals generated from the side stereo time- frequency segments. |
