def none(active):
    """No tapering window.

    Parameters
    ----------
    active : array_like, dtype=bool
        A boolean array containing ``True`` for active loudspeakers.

    Returns
    -------
    type(active)
        The input, unchanged.

    Examples
    --------
    .. plot::
        :context: close-figs

        plt.plot(sfs.tapering.none(active1))
        plt.axis([-3, 103, -0.1, 1.1])

    .. plot::
        :context: close-figs

        plt.plot(sfs.tapering.none(active2))
        plt.axis([-3, 103, -0.1, 1.1])

    """
    return active