How to use the sidekit.frontend.io.read_wav function in SIDEKIT

def _wav2feats(wavname):
    """ 
    """
    ext = os.path.splitext(wavname)[-1]
    assert ext.lower() == '.wav' or ext.lower() == '.wave'
    sig, read_framerate, sampwidth = read_wav(wavname)
    shp = sig.shape
    # wav should contain a single channel
    assert len(shp) == 1 or (len(shp) == 2 and shp[1] == 1)
    # wav sample rate should be 16000 Hz
    assert read_framerate == 16000
    assert sampwidth == 2
    sig *= (2**(15-sampwidth))
    _, loge, _, mspec = mfcc(sig.astype(np.float32), get_mspec=True)
    return mspec, loge