In coding of an audio signal, coded signals with low quality and bit rate on the one hand and coded signals with high quality and bit rate on the other hand are transmitted to a decoder. At first, the audio signal is coded with low bit rate and is transmitted to the decoder before an additional coded...http://www.google.de/patents/US6115688?utm_source=gb-gplus-sharePatent US6115688 - Process and device for the scalable coding of audio signals
