device for converting a first number of input audio channels to a second number of audio output channels, audio system, method for converting a first number of audio input channels to a second number of audio output channels, e, computer program product

摘要

DEVICE FOR CONVERTING A FIRST NUMBER OF INPUT AUDIO CHANNELS IN A SECOND NUMBER OF OUTPUT AUDIO CHANNELS, AUDIO SYSTEM, METHOD FOR CONVERTING A FIRST NUMBER OF INPUT AUDIO CHANNELS E, COMPUTER PROGRAM PRODUCT. A device (1) for converting a first number (M) of input audio channels to a second larger number (N) of output audio channels includes: decorrelation units (3) for decomposing the input audio channels into a set of uncorrelated auxiliary channels, at least one elevator mixing unit (4) for combining the decorrelated auxiliary channels in the output audio channels, and at least one preprocessing unit (2) for preprocessing the audio channels input and feed the preprocessed input audio channels to the decorrelation units (3). The preprocessing unit (2) and the elevator mixing unit (4) are preferably controlled by audio parameters.