@staticmethod
def ascending(width=12):
    """Creates an ascending register inflection.

        ::

            >>> inflection = consort.RegisterInflection.ascending()
            >>> print(format(inflection))
            consort.tools.RegisterInflection(
                inflections=abjad.IntervalSegment(
                    (
                        abjad.NumberedInterval(-6),
                        abjad.NumberedInterval(6),
                        ),
                    item_class=abjad.NumberedInterval,
                    ),
                ratio=abjad.Ratio((1,)),
                )

        Emits new register inflection.
        """
    import consort
    half_width = abs(int(width / 2))
    return consort.RegisterInflection(inflections=(0 - half_width,
        half_width), ratio=(1,))
