datautils.py 文件源码

def make_melgram(mono_sig, sr):
    melgram = librosa.logamplitude(librosa.feature.melspectrogram(mono_sig, 
        sr=sr, n_mels=96),ref_power=1.0)[np.newaxis,np.newaxis,:,:]
    return melgram


# turn multichannel audio as multiple melgram layers