一种便于低成本实现的自适应语音降噪算法研究

Low-Cost Implementation of Adaptive Algorithm forCanceling Noises in Phoning

为便于用低成本的高速信号处理芯片实现语音降噪 ,对改进的离散余弦变换域 LMS( Discrete cosinetransform-LMS)自适应算法应用于噪声抵消系统进行了实验研究。结果表明 ,将该算法应用于自适应语音降噪系统 ,在有色噪声环境中能获得较好的降噪效果 ,基于数字信号处理器开发实现简单、硬件要求低 ,便于低成本实现。

An improved discrete cosine transform-LMS (DCT-LMS) adaptive algorithm is used to cancele coloured noises in phoning. This paper presents the performance and effect of canceling noises by using the adaptive algorithm. The algorithm is easy to be developed and cheap in cast, and low in hardware requirement based on the digital signal processor (DSP).