采用谱减法的语音降噪实现代码，适用于语音和音频系统中，可直接调用。-Speech noise reduction using spectral subtraction implementation code, for voice and audio systems, can be called directly.

For restoration of time-domain signals, an estimate of the instantaneous magnitude spectrum is combined with the phase of the noisy signal, and then transformed via an inverse discrete Fourier transform to the time domain. In terms of comput