Adaptive rate control algorithm of Speex codec based on speech quality prediction
Xing Li Wu · Journal of Computer Applications · 2010
To manage and control the speech quality of VoIP communication dynamically,an adaptive rate control algorithm based on speech quality prediction was proposed.This algorithm predicted the instantaneous speech quality and the integral speech quality of VoIP in real time to adjust the encoding parameters of Speex codec adaptively.Then it selected the optimal encoding bit rate in need.The simulation results demonstrate that the proposed algorithm indeed reduces the network congestion and improves the speech quality of VoIP system.