The method and apparatus of the voice rate conversion in multi-rate speech coder for telecommunications

摘要

It is a method and apparatus for converting the bit stream data through the multi-rate speech coder. Multi-rate speech coder, into something of a compression method according to a second rate, a second bit stream representing the frame of data encoded according to an audio compression method in the first rate of the first. Rate conversion pair includes an audio compression parameter mapping modules. In the input site, for-encoded packet, the method of rate conversion performs the ankh on Thailand THEY tion and or bit unpacking. This is for obtaining a voice compression parameters in accordance with the rate information, the audio compression method first rate. Then, in addition to the external control commands, and is used information on a second rate type, that the output rate and the first rate, is required, to determine a strategy for the conversion rate conversion pair. Then, at least, at least some of the compression parameter of the first rate, or is passed through to the compression parameters of the second rate that is compatible with the compression method Koekoe second rate is mapped.