def normalize_pose_arr(data_arr, data_mean, data_std):
    """
    Normalizes a pose array.

    Parameters:
        data_arr: ndarray(nTimePoints, nJoints=16, nCoords=(2 or 3)) of float64
        data_mean, data_std: ndarray(nJoints=16, nCoords=(2 or 3)) of float64
    """
    return (data_arr - data_mean) / data_std