【作者】 陈紫强； 刘庆华； 欧阳缮；

【Author】 Chen Ziqiang Liu Qinghua Ouyang Shan (School of Information and Communication, Guilin University of Electronic Technology,Guilin 541004,China)

【机构】 桂林电子科技大学信息与通信学院；

【摘要】 由于语音与噪声之间存在交叉串,传统自适应算法降噪性能受到很大的影响。为了提高双麦克风算法降噪性能,使用两级自适应滤波系统,去除麦克风之间信号的交叉串扰。为了提高自适应滤波器收敛性能,将第一级滤波系统的输入信号按频率划分成多个独立子带,分别进行自适应滤波处理。实验结果表明,该方消噪量大,对语音损伤小,语音增强效果显著。更多还原

【Abstract】 The performance of traditional adaptive noise cancellation algorithms is greatly suffered by cross-talk signals in two microphone speech enhancement applications. To promote the performance of two-microphone noise cancellation algorithms, a two-stage adaptive filter system is adopted to extract desired speech signal from cross-talk signals. To accelerate the convergence, the signal of the first stage is divided to several subband,at which subband adaptive filter(SAF) is employed,Experiment results show that this method is quite effective in speech enhancement as it can cancel a large amount of noise with little distortion to speech signals.更多还原