Patent ID: 6275589
Filing Date: 2001-08-14
Classification: G10L,H04S

Abstract:
Method for the level matching of multi-channel audio a signals, at the encoder end, mono or stereo signals and supplementary signals being produced from the multichannel audio signals by means of matrixing, and the mono or stereo signals being coded in accordance with a first coding standard and the supplementary signals or all of the channels being coded in accordance with a second coding standard, the method comprising the steps of:decoding the mono or stereo signals and the supplementary signals to generate decoded mono or stereo signals and decoded supplementary signals;inverse matrixing said decoded signals to generate the multi-channel audio signals;monitoring said supplementary signals to generate an error signal in response to the detection of errors; andcross-fading a portion of the multi-channel audio signals, in response to said error signal, to said decoded mono or stereo signals and setting a further portion of the multi-channel audio signals to zero.