APPARATUS AND METHOD FOR REPRODUCING AN AUDIO SIGNAL, APPARATUS AND METHOD FOR GENERATING A CODED AUDIO SIGNAL, COMPUTER PROGRAM AND CODED AUDIO SIGNAL

摘要

An apparatus for reproducing an audio signal based on first data representing a coded version of a first portion of the audio signal in a first frequency band and second data representing side information on a second portion of the audio signal in a second frequency band, the second frequency band comprising frequencies higher than the first frequency band, comprises a first reproducer configured to reproduce the first portion of the audio signal based on the first data. A provider is configured to provide a patch signal in the second frequency band, wherein the patch signal is at least partially uncorrelated with respect to the first portion of the audio signal or is at least partially a decorrelated version of the first portion of the audio signal, which has been shifted to the second frequency band. A second reproducer is configured to reproduce the second portion of the audio signal in the second frequency band based on the second data and the patch signal. A combiner is configured to combine the reproduced first portion of the audio signal and the patch signal before the second portion of the audio signal is reproduced by the second reproducer or to combine the reproduced first portion of the audio signal and the reproduced second portion of the audio signal.