Low amount of computation code excited linear predictive coding

摘要

Information about the excitation signal (s _M (n)) of the first signal is encoded by CELP is (km), and a limited set of candidate excitation signal (s _S (n)) to the second signal associated ( It is used to derive the 10 '). The preferred pulse positions of the excitation signal (s _M (n)) of the first encoded signal is, it is used to determine a set of candidate excitation signals (10 '). More preferably, the pulse positions of the set of candidate excitation signals, it is positioned proximate to the pulse positions of the excitation signal (s _M (n)) of the first coded signal. (S _S (n)) may be a multi-channel signal or audio signal sound common second signal (s _M (n)) and the first signal. However, may be the same (s _S (n)) is the second signal (s _M (n)) and the first signal. Thus, the encoding (s _S (n)) of the second signal may be used to re-encoded at a low bit rate.