MIDI-guitar (was: Touch Switches/TS instruments )

[Harry Bissell]

Sorry, no can do. When you fret the string you contact (short) two voltage
sources. Better
to put resistors across the frets, drive the side nearest the bridge with a
constant current
source, and then ground the strings. I'll work... monophonic only. Cannot work
as a polly.. so solly!

The strings go (lets say) Y axis, the frets go X axis... push nore than one
adjacent string
and you have a big metal matrix. Cannot say which is the true position.

I'd love proof that I'm wrong here :^(

H^)   harry

Theo wrote:

> Have to see how this works:
> Give every fret its own voltage, do a matrix scann on the string and frets.
> No reson to cut up the frets, since you can see what is the "lowest" fret
> touched by the string.
>
> Just an idea,
> Cheers Theo "can only play a Amaj"
>
> ----- Original Message -----
> From: Paul Perry <pfperry at melbpc.org.au>
> To: Harry Bissell <harrybissell at prodigy.net>
> Cc: <synth-diy at node12b53.a2000.nl>
> Sent: Sunday, May 14, 2000 8:15 AM
> Subject: Re: MIDI-guitar (was: Touch Switches/TS instruments )
>
> > At 08:59 PM 14/05/00 -0400, Harry Bissell wrote:
> > >Reply:   no!
> > >The string is shorted to the fret before AND behind the finger... so if
> you
> > >have>fretted strings on any adjacent frets they are shorted together
> > through the
> > >X (strings) Y (frets) matrix. You CANNOT isolate the strings once they
> > >touch>the frets...
> > >that's why everyone cuts the frets into pieces...
> >
> > Yeah, but, since the two frets are adjacent, you just need a bit of logic
> to
> > say,
> > 'hey the 3rd string touches fret n and n+1, that means n'
> >
> > Now, you're going to come up with a counter example where there are more
> > than one
> > touching the same fret.. but, given that there are only 6 strings & they
> are
> > only
> > being fretted at a maximum of two adjacent points..
> > >
> > >Moral: everything easy has been done already !!!
> >
> > CounterMoral: think harder already !!!
> >
> > paul 'smartarse' perry melbourne australia
> >