kdllib.py 文件源码

def fetch_sample_speech_walla(n_samples=None):
    datapath = os.path.join("walla_wav", "*wav")
    names = glob.glob(datapath)

    speech = []
    wav_names = []

    logger.info("Loading speech files...")
    for name in names[:n_samples]:
        fs, bitw, d = readwav(name)
        d = d.astype('float32') / (2 ** 15)
        inds = np.arange(0, len(d), 16000)
        for i, j in zip(inds[:-1], inds[1:]):
            dij = d[i:j]
            dij = sg.decimate(dij, 2, ftype="iir")[::2]
            # decimate to 8k
            fs = 8000
            speech.append(dij)
            wav_names.append(name)
        if len(speech) > 200:
           break
    return fs, speech, wav_names