audio_tools.py 文件源码

def compute_noise_avg_spectrum(self, nsignal):
        windownum = int(len(nsignal)//(self.winsize//2) - 1)
        avgamp = np.zeros(self.winsize)
        for l in range(windownum):
            avgamp += sp.absolute(sp.fft(get_frame(nsignal, self.winsize,l) * self.window))
        return avgamp/float(windownum)