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

[Harry Bissell]

You don't need to move the frets to get V/oct response... just an antilog
converter...
Giutars are already "expo" by nature...

H^)

Ingo Debus wrote:

> Tom May wrote:
> > Any resistive solution will require the player to wear non-conductive
> > gloves on both hands unless you think it's cool to vary the pitch with
> > playing pressure, sweat, right-hand damping, etc.  Sounds like it's
> > bordering on the theremin in terms of playability.
>
> The thinnest Konstantan (sp?) wire I can get here (0.06 mm diameter; I
> doubt this could be used as a string) has 170 ohms per meter. A guitar
> string is about 0.63 meters long. The resistance of the human skin is
> much higher, so I don't think this would be much of a problem. I'd guess
> some dirt etc. on the string or fret making a few additional ohms at the
> contact place would cause much more trouble. The distance between frets
> (at 12th fret) is about 17 mm, with 170 ohms/m this is less than 3 ohms!
> The Trautonium uses a wire wound string to get a higher string
> resistance, perhaps that's a solution.
> I didn't mean to derive a pitch control voltage directly from the string
> resistance,  this resistance is just to determine at which fret the
> string is fingered, i.e. there have to be thresholds in the detection
> circuit. (If one wanted a V/octave control voltage derived directly from the
> string resistance the frets would have to be equally spaced, this would
> be unconvenient for most guitarists).
>
> But I remember a picture of the bassist of the German band "The Can"
> wearing a glove on the left hand. Maybe this was the reason?
>
> Ingo