Improved LBG Algorithm and Training of Voiced Membership Codebook
In order to improve the performance of MELP vocoder decoding end mixed excitation signal, the concept of a five dimensional voiced membership degree vector and its extraction algorithm is put forward, for the extraction and the establishment of the voiced membership codebook training set;with improved LBG algorithm training voiced membership codebook;this codebook to use mixed excitation vocoder. Simulation results show that,the quality of the decoded speech is significantly improved than that of LPC vocoder.
NETL
NSTL
万方数据
维普
