REDUCING SEARCH COMPLEXITY FOR CODE-EXCITED LINEAR PREDICTION (CELP) CODING

摘要

REDUCING SEARCH COMPLEXITY FOR CODE-EXCITED LINEARPREDICTION (CELP) CODINGAbstract of the DisclosureA code-excited linear prediction (CELP) coding methodand code divide the residual signal into frequency bands.Codebooks provided for each band decrease in size withincreasing band frequency. Reduction in codebook size withincreasing frequency together with reduction in samplingrate with decreasing frequency provide reductions incodebook search complexity that allow real timeimplementation on digital signal processor chips.