数据处理中经常使用归一化方法，该算法是最基础和常用的面归一化方法(CSN).-Normalization method is often used in data processing, the normalization method (CSN) algorithm is the most basic and commonly used surface.

频域归一化的自适应滤波消除回声，效果非常不错-Frequency domain normalization of adaptive filtering to eliminate echo, the effect is very good