audio_tools.py 文件源码

def fetch_sample_speech_fruit(n_samples=None):
    url = 'https://dl.dropboxusercontent.com/u/15378192/audio.tar.gz'
    wav_path = "audio.tar.gz"
    if not os.path.exists(wav_path):
        download(url, wav_path)
    tf = tarfile.open(wav_path)
    wav_names = [fname for fname in tf.getnames()
                 if ".wav" in fname.split(os.sep)[-1]]
    speech = []
    print("Loading speech files...")
    for wav_name in wav_names[:n_samples]:
        f = tf.extractfile(wav_name)
        fs, d = wavfile.read(f)
        d = d.astype('float32') / (2 ** 15)
        speech.append(d)
    return fs, speech