发明名称 |
AUDIO DECODING. |
摘要 |
<p>An audio decoder comprises a receiver (801) for receiving input data comprising an N-channel signal corresponding to a down-mixed signal of an M-channel audio signal, M>N, having complex valued subband encoding matrices applied in frequency subbands and parametric multi-channel data. A subband filter bank (805) generates real- valued frequency subbands for the N-channel signal. A matrix processor (809) determines real- valued subband decoding matrices for compensating the application of the encoding matrices in response to the parametric multi-channel data. A compensation processor (807) generates down-mix data corresponding to the down-mixed signal by a matrix multiplication of the real-valued subband decoding matrices and data of the N-channel signal in the at least some real- valued frequency subbands. The down-mix data can be used to regenerate the down-mixed signal and the M-channel audio signal. The decoder may compensate for MPEG Matrix Surround Compatibility operations performed at the encoder using real- valued frequency subbands.</p> |
申请公布号 |
MX2008012217(A) |
申请公布日期 |
2008.11.12 |
申请号 |
MX20080012217 |
申请日期 |
2007.03.23 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
ERIK G. P. SCHUIJERS;LARS F. VILLEMOES |
分类号 |
G10L19/02;G10L19/00;G10L19/008;G10L19/14;G10L25/18;H04S3/02;H04S5/00 |
主分类号 |
G10L19/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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