GRADIENT ALGORITHM FOR DESIGNING ADAPTIVE PREDICTIVE VECTOR CODER

摘要

In this paper,an adaptive vector predictive coder that is designed using stochastic gradient algorithm is introduced.Simulation results and flow chart for designing are given.The resutts have shown that the adaptive vector predictive coder can achive higher signet to noise ratio(SNR) and understandabte quantized speech,when the rate is 8.6kbits/s.In the test part of the paper,the comparision and analysis of AVPC,VPC and VQ are given,on the aspects of SNR.