采用维纳滤波实现降噪的详细描述，包含单个话筒与多个话筒两种情形-Wiener filtering noise using a detailed descr iption of a single microphone and a plurality of microphones including two cases

time-invariant degradation models and stationary signals and noise, the classical Fourier domain Wiener filter, which can be implemented in O(N logN) time, gives the minimum mean-square-error estimate of the original undistorted signal. For t