ENHANCED AUDIO ENCODING AND DECODING EQUIPMENT, METHOD THEREOF

摘要

The present invention relates to enhanced audio encoding equipment, including band extending module , re-sampling module, psychological acoustic analyzing module , time-frequency mapping module , quantizing module , entropy coding module and bit stream diplexing module ; the band extending module analyzes the original inputted audio signals in whole band-width , extracts the spectral envelope of the high-frequency part and the parameter characterized of the dependency between the lower and higher parts of the frequency spectral , and then outputs them to the bit stream diplexing module ; the re-sampling module re-samples the inputted audio signals , changes the sampling rate , and outputs them to the psychological acoustic analyzing module and the time-frequency mapping module ; The present invention is applicable to hi-fi compress encoding of audio signals which have configurations about all sorts of sampling rates and sound channels , it can support audio signals whose sampling rate has a range of 8kHz - 192kHz ; and it can support all the sound channel configurations which are available ; it also can support audio encode/decode which has wide range object code rate.