AUDIO CODING APPARATUS AND METHOD THEREOF

摘要

An encoder for encoding an audio signal. The encoder is configured to determine at least one characteristic of the audio signal; divide the audio signal into at least a low frequency portion and a high frequency portion, and generate from the high frequency portion a plurality of high frequency band signals dependent on the at least one characteristic of the audio signal. The encoder further determines for each of the plurality of high frequency band signals at least part of the low frequency portion which can represent the high frequency band signal.