def data_preprocess(wav, preemph=0.95):
    wav = (((2.0 / 65535.0) * (wav.astype('float32') - 32767)) + 1.0)
    if (preemph > 0):
        wav = pre_emph(wav, coeff=preemph)
    return wav.astype('float32')
def data_preprocess(wav, preemph=0.95):
    wav = (((2.0 / 65535.0) * (wav.astype('float32') - 32767)) + 1.0)
    if (preemph > 0):
        wav = pre_emph(wav, coeff=preemph)
    return wav.astype('float32')