谱减法是一种比较简单的语音降噪的方法，在语音信号具有较高的信噪比的情况下具有良好的降噪功能。 -Spectral subtraction is a relatively simple pronunciation methods of noise in speech signal with high signal-to-noise ratio (SNR) of cases with good noise function.

集合经验模态分解主要用于信号分解与降噪，为后期信号特征提取提供理论基础-The set of EMD is mainly used for signal decomposition and denoising, which provides a theoretical basis for signal feature extraction.

经验模态分解，可以用于声音分解，声音识别以及降噪