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The algebra code-excited linear prediction(ACELP) is the core algorithm of a lot of low bit rate speech coding standards, including the 3G speech standard VSELP, AMR, AMR-NB, AMR-WB. The algorithm is based on code excited linear prediction model. The pitch delay is determined by the effective codebook search. The algorithm's time complexity is O (n3). Based on the ACELP, this paper propose an improved...
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