基于自适应滤波的语音增强和噪声消除

Speech Enhancement and Noise Reduction Based on Self-adaptive Filter

语音增强的主要目标是从带噪语音信号中提取尽可能纯净的原始语音。文中介绍了一种基于自适应滤波进行语音增强的方法,这种方法比其他方法多用了1个参考噪声作为辅助输入,从而获得了比较全面的关于噪声的信息,因而能得到更好的降噪效果。通过计算机上的模拟处理,处理后的语音信号较原噪声语音信号显著地提高了信噪比,同时能有效地改善语音可懂度。

The primary purpose of speech enhancement is to extract more pury speech from noisy speech.Describes a method of removing additive background noise from the noisy speech in the self_adaptive filter ,which use one more reference noise as accessorial input than others.Therefore the all-sided information of noise and better noise reduction effect were acquired.After simulated by computer,the SNR(signal to noise ratio) of processing data and the comprehension have been improved obviously.