MOTM

hopefully Paul can institute this in the MOTM mixer.
Jim

Dave Bradley wrote:

> If you invert the output and sum it with the uninverted input signal,
> you'll get highpass. You could do it with an external mixer with
> reversible phase on the inputs, or build that in on a daughterboard.
> What would it take, a switch, an opamp, and 3 resistors?
>
> Moe
>
> --- In motm@egroups.com, "Tkacs, Ken" <ken.tkacs@j...> wrote:
> >
> > Is it possible to make a few modifications to an MOTM-440 Lowpass
> Filter to
> > make it a highpass? Not that I would take a Dremel to my own, but
> I'm just
> > wondering if a few changes to the layout and front panel legend
> might yield
> > a whole new module. A 24 db/oct highpass filter would be useful.
> >
> > I had a thought today while shovelling snow that a CCD "bucket
> brigade"
> > device is similar with electricity to styrofoam or fiberglass
> insulation is
> > with thermal energy. They both have little 'cells' that slow down
> the
> > transmission of their respective energy types.
> >
> > Back to our regularly scheduled program.
>