摘要
为解决语音通信中的混响干扰问题,提出了一种基于最小相位分解的,可用于单通道语音的去混响方法。根据信号最小相位分解的原理,将接收到的含噪带混响的语音信号分解成最小相位部分和全通部分,对其中的最小相位部分进行复倒谱域的滤波处理,再与全通部分进行合成以实现混响的去除。通过仿真实验来实现这种方法,并与另一种改进过的复倒谱域滤波的去混响方法进行比较,实验结果表明这种方法相对较好。
For addressing the reverberation in speech communication,a dereverberation based on minimum phase decomposition for single channel is proposed in this paper.According to the principle of minimum phase decomposition of signal,the received speech signal with noise and reverberation can be decomposed into two parts: minimum phase signal and all-pass signal.The minimum phase signal is filtered in complex cepstrum domain,and then synthesized with the all-pass signal,thus to eliminate the reverberate signal.The proposed method is implemented by simulation,and also compared with other improved filter method in complex cepstrum domain.The experimental results show that the proposed method is relatively better.
出处
《通信技术》
2011年第6期78-82,共5页
Communications Technology
关键词
去混响
单通道
最小相位
复倒谱
dereverberation
single channel
minimum phase
complex cepstrum
