Divided audio signal envelope coding according to the audio signal envelope with partitioned quantization and coding, processing and decoding apparatus and method

摘要

Apparatus for decoding in order to obtain the playback audio signal envelope is provided. The apparatus includes a signal envelope reproducing unit which generates in dependence of the reproduced audio signal envelope to one or more dividing points (110), and an output interface for outputting the reproduced audio signal envelope (120). Signal envelope reproducing unit (110), such that one or more dividing points are divided into two or more audio signals envelope part reproduced audio signal envelope, generating a reproduced audio signal envelope. Predefined allocation rules, the signal envelope part values for each signal envelope part of two or more signals envelope part is defined in dependence on the signal envelope part. Further, the signal envelope reproducing unit (110) for each of the two or more signals envelope part, than half the absolute value of each signal envelope part value of the absolute value of the other signal envelope portion of the signal envelope part value so as to be large, to generate a playback audio signal envelope.FIELD 1