通讯系统中语音信号合成算法研究

要实现通讯系统中必备的音频会议功能,数字音频合成和声反馈抵消是音频会议处理中必不可缺的,其算法决定了会议的效果.文章介绍数字音频合成和回波抵消的基本原理,提供了一种基于DSP的自适应回波抵消和归一化定标实现算法.仿真实验的结果证实了该信号合成算法的合理性.实践中使用该算法能够达到很好的音频会议信号合成效果.

Study on the Algorithm of Audio Signal Synthesizing in Communication Systems

To realize the essential function of an audio meeting in the real world communication systems,the reduction of the digital audio synthesizing harmonic feedback is indispensable in the management of the audio meeting,whose algorithm decides the effect of the meeting.In this paper,we introduce the basic principle of the echo cancellation in digital audio synthesizing,and present the algorithm for the echo cancellation based on DSP.The results of simulated tests show that the algorithm of the signal synthesizing is reasonable.The use of the algorithm in practice gives very good effect of the audio meeting signal synthesizing.