numpy向量转为wav音频并存储_numpy数组保存成声音

def vec2wav(pcm_vec, wav_file, framerate = 16000):
    """ 
    将numpy数组转为单通道wav文件
    :param pcm_vec: 输入的numpy向量
    :param wav_file: wav文件名
    :param framerate: 采样率
    :return:
    """
    import wave

   # pcm_vec = np.clip(pcm_vec, -32768, 32768)
   
    if np.max(np.abs(pcm_vec)) > 1.0:
        pcm_vec *= 32767 / max(0.01, np.max(np.abs(pcm_vec)))
    else:
        pcm_vec = pcm_vec * 32768
    pcm_vec = pcm_vec.astype(np.int16)
    wave_out = wave.open(wav_file, 'wb')
    wave_out.setnchannels(1)
    wave_out.setsampwidth(2)
    wave_out.setframerate(framerate)
    wave_out.writeframes(pcm_vec)
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