features.py 文件源码

def __init__(self, samplerate, framelen):
        '''
        Initialize perceptual loudness using samplerate and framelength
        '''
        self.framelen = framelen
        self.window = np.hamming(framelen)
        self.filter = np.zeros(framelen / 2)
        for i in xrange(framelen / 2):
            self.filter[i] = self.__weightA(float(i * samplerate) / framelen)
        return