utilities.py 文件源码

def is_valid_wav(filename):
    # check the sampling rate and number bits of the WAV
    try:
        wav_file = wave.Wave_read(filename)
    except:
        return False
    if wav_file.getframerate() != 16000 or wav_file.getsampwidth() != 2 or wav_file.getnchannels() != 1 \
        or wav_file.getcomptype() != 'NONE':
        return False
    return True