WAV降采样方式横向评测

admin

Nov. 17, 2019, 5:36 p.m.

read: 1404

# scipy.signal 进行降采样
def wav_file_resample(sig, source_sample=44100, dest_sample=16000):
    try:
        signal.resample
    except:
        from scipy import signal

    '''
    对WAV文件进行resample的操作 
    ！！！注意：sig必须是np.int16格式
    :param file_path: 需要进行resample操作的wav文件的路径
    :param source_sample:
    :param dest_sample:
    :return:
    '''
    # sample_rate, sig = wavfile.read(file_path)
    # print(sample_rate)
    # print(sig)
    result = int((sig.shape[0]) / source_sample * dest_sample)
    x_resampled = signal.resample(sig, result)
    x_resampled = x_resampled.astype(np.int16)

    return x_resampled