Abstract: This paper presents a self-adaptive silence suppression algorithm. The algorithm can adjust its suppression threshold to current yawp environment. It can save about 50% bandwidth of VoIP session. The algorithm is especially useful under low bandwidth network environment such as CDMA. It can reduce network congestion and improve QoS of VoIP. The experiments demonstrate the algorithm’s effect.

Key words: silence suppression, self-adaptive, QoS

摘要： 提出一种自适应的静音抑制算法，根据当前的噪声环境动态地调整静音抑制阈值，从而在用户处于静默状态时停止传输背景噪声包，能节省约50%的VoIP传输带宽。在低带宽的环境下，能够降低网络拥塞，大大提高VoIP通话效果。CDMA网络的实验结果验证了该算法的效用。

关键词: 静音抑制, 自适应, 服务质量

CLC Number: 

• TP393