Verfahren zum Codieren mehrerer Audiosignale

摘要

In a process for coding a plurality of audio signals, the left and right-hand basic channels and the central channel are formed into a jointly coded signal by joint stereo coding which is decoded to provide simulated decoded signals. The simulated decoded signals and two surround channels are formed by matrixing by means of a compatibility matrix into compatible signals which are suitable for decoding using existing decoders. To prevent audible interference on account of the high energy contents of the compatible signals which would occur if joint stereo coding and decoding were first performed before matrixing, the compatible signals or the simulated decoded signals dynamically weighted by means of a dynamic correction factor in such a way that the energy of the compatible signals approaches that of signals which would be obtained by the direct matrixing of the two basic channels and the central and surround channels.