ITU-T G.729语音压缩算法。 descr iption: Fixed-point descr iption of commendation G.729 with ANNEX B Coding of Speech at 8 kbit/s using Conjugate-Structure Algebraic-Code-Excited Linear-Prediction (CS-ACELP) with Voice Activity Decision(VAD), Discontinuo

G729B源码1.4版本，含CS-AELP,DTX,VAD,CNG。已验证，调试。-G729B source code 1.4 version, with CS-AELP, DTX, VAD, CNG. Verified, debugging.

webrtc基础音频信号处理，以及CNG模块提取，并向其中附加了G7221C编解码器，用于处理7221音频数据和VAD活动语音检测后的CNG包，用于服务器处理流媒体数据，混音等的操作。-webrtc base audio signal processing, as well as CNG module extracts, to which is added G7221C codec 7221 for processing audio data and voice activity detecti