根据每帧的功率谱动态调整谱减系数,然后通过维纳滤波法把各种噪声变换为类似白噪声的噪声,最后用原减谱法把该噪声去除。-Coefficient of spectral subtraction dynamic adjustment according to the power spectrum of each frame, then all kinds of noise by Wiener filtering transform is similar to white noise, noise, an

由AR模型参数得到功率谱。AR，MA和ARMA是功率谱估计中最主要的参数模型。AR模型的正则方程是一组线性方程。-The AR model parameters obtained power spectrum. AR, MA and ARMA power spectrum estimation is the most important parameter model. Canonical equations AR model is a set of linear equations.

用Welch平均法对信号 作功率谱估计.welch法又称之为加权交叠平均法。是一种经典的功率谱估计方法。-By Welch method to estimate the power spectrum signal .welch method is also known as the weighted average method overlap. It is a classic power spectrum estimation method.