vc++的谱减程序，与martin的谱减算法相对应，包括fft，iff，hamming窗，噪声估计及谱减主体等成员函数-vc++ the spectrum by the procedure, and the spectral subtraction algorithm martin corresponding to, including the fft, iff, hamming window and the noise spectrum is estimated by the main member functions, etc.
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