A new scheme of speech coding and transmission on ATM networks
Bi Hou · Journal of China Institute of Communications · 2000
A new scheme of VBR speech coding and transmission is presented in this paper for the purpose of carrying speech services over ATM networks To combine the characteristics of signal sources and human ears with statistical multiplexing of ATM network resources and to realize speech compression and low delay transmission over ATM networks.This new scheme takes ATM networks and the optimal parameters of speech coding systems into consideration together Based on a new entropy parameter defined by us,we encode and transmit different input signals with different methods Our codec uses wavelet to split signal into sub band signals,binary tree VQ algorithm is adopted to process them The system rate is variable and total processing delay can also be adjusted by different filters