APPARATUS AND METHOD FOR COMBINING MULTIPLE PARAMETRICALLY CODED AUDIO SOURCES

摘要

According to the present invention, multiple parametrically encoded audio signals can be efficiently combined using an audio signal generator (100), which generates an audio output signal (120) by combining the down-mix chann els (110a, 112a) and the associated parameters (110b, 112b) of the audio sig nals directly within the parameter domain, i.e. without reconstructing or de coding the individual input audio signals prior to the generation of the aud io output signal (120). This is achieved by direct mixing of the associated down-mix channels (110a, 112a) of the individual input signals. It is one ke y feature of the present invention that the combination of the down-mix chan nels (110a, 112a) is achieved by simple, computationally inexpensive arithme tic operations.