Method and apparatus for implementing fixed codebooks of speech codecs as a common module

摘要

invention speech codec (speech codec) of the fixed codebook (fixed codebook) common module (common module ) relates to a method and apparatus for implementing a method for implementing a plurality of fixed codebook of the speech codec according to the invention as a common module corresponding to the speech codec based on information of any one of the speech codec of the plurality of speech codec that by generating a track (track) in the fixed codebook, the codebook vector corresponding to the selected codebook vector (codebook vector) target (target) consisting of a combination of the signal from the pulse (pulse) represents the resulting track is, the communication terminal or can be built only of the fixed codebook are excluded from the speech codec in a communication system, and the result and the speech codec can support a variety of different types of speech codecs without the use of expensive, high-performance chip and at the same time reducing the memory footprint, When implemented, the common fixed codebook module in hardware form processing complexity is reduced, the latest fixed codebook search algorithm common fixed codebook can easily apply the most recent fixed codebook search algorithm for the entire speech codec is improved by applying it only to the whole audio processing performance .