Low bit rate audio encoder and decoder

摘要

A system for encoding an audio signal into a bit stream, the audio signal containing a first audio signal representative of audio which is substantially vocal and a second audio signal representative of audio which is substantially nonvocal, the system comprising: a first encoder (10) which symbolically encodes the first audio signal to form a first encoded signal; a second encoder (12) which symbolically encodes the second audio signal to form a second encoded signal; and a first multiplexer (14), coupled to the first encoder (10) and to the second encoder (12), which multiplexes the first encoded signal and the second encoded signal to form the bit stream. <IMAGE>