Is anyone who can help me correct this article into English? Thank you very much. 人们在语音通信中不可避免地会受到来自周围环境和传播媒介引入的噪声， 这些干扰噪声使接收者接收到的语音为受噪声污染的带噪语音信号。为了尽可能多的消除噪声所带来的干扰，从中提取出尽可能纯净的原始语音，我们需要引入语音降噪技术。语音降噪就是从带噪语音信号中尽可能提取纯净的原始语音，使接收者接收到尽可能的纯净语音。文中介绍了一种基于自适应滤波的噪声抵消法，采用归一化最小均方误差算法。它通过实际噪声环境下采集各种不同信噪比的带噪语音样本进行降噪处理。实验结果表明，经过语音降噪处理后的语音信号得到了较大程度的改善，大大提高了语音传播效果，具有较高的清晰度且没有什么噪声。 People in voice communication will be affected inevitably by environment and media from introducing noise, these interferential noise make recipient receives the speech to the noise pollution of the speech signal with noise. In order to eliminate noise as much as possible, the interference caused by as much as possible to extract pure primitive voice, we need to introduce voice noise reduction technology. The primary purpose of noise reductionis to extract more pure speech from noisy speech. This article introduces a method of noise cannellation based on adaptive filter, adopting normalized least mean square algorithm. The experiment is to collect different SNR noisy speech in factual noisy environment and then reduce the noise in computer. The emulation result shows that the SNR is increased largely and the effect of hearing is improved obviously with high intelligibility and no distortion.