Pan Su, Feng guangzeng (Nanjing university of posts and telecommunications Nanjing 210003). CELP Coder for the GSM Half-Rate System[J]. Acta Electronica Sinica, 1997, (1).
Pan Su, Feng guangzeng (Nanjing university of posts and telecommunications Nanjing 210003). CELP Coder for the GSM Half-Rate System[J]. Acta Electronica Sinica, 1997, (1).DOI:
This paper is devoted to an investigation for the realization of GSM Half-Rate Coder with the CELP method. It is focused on the fast adaptive codebook search algorithm which is proposed by us. The computational complexity is reduced and no harm is introduced into the synthesis voice by this algorithm. The results of computer simulation show that the bit-rate of this coder version is 5. 8-6. 5kb/s and the MOS(mean opinion score)of the synthesis voice is not less than 3. 8.