formatting

    down: Optional[bool] = False,

    before: Optional[bool] = False,

):

    # Get the delay in number of samples

    d_samples = get_delay_flt_type(flt_type, up, down, before=before)

    y = deepcopy(x)

    for i, flt in enumerate(flt_type):

        # pad to avoid loosing samples due to delay

        y.audio = pad_delay(y.audio, flt_type=flt, fs=y.fs, up=up[i], down=down[i], before=True)

        y.audio = pad_delay(

            y.audio, flt_type=flt, fs=y.fs, up=up[i], down=down[i], before=True

        )

        # resampling

        y.audio = filter_itu(y, flt_type=flt, up=up[i], down=down[i])

        # delay compensation

        y.audio = delay_compensation(

            y.audio, flt_type=flt, up=up[i], down=down[i]

        )

        y.audio = delay_compensation(y.audio, flt_type=flt, up=up[i], down=down[i])

    return y.audio