[Re: Radiohead]

[M.Ruberto]

hi Danial

"danial stocks" <diode at hotmail.com> wrote:
> 
> >
> >I just watched Radiohead play on Saturday Night Live(a 
> >nationally-distributed
> >television show for those outside the USA); the keyboardist had behind him

> >a
> >large modular, played some synth or other with wooden side panels and some

> >knobs
> >and sliders.....with an interesting controller : attached to his finger was

> >a
> >string which ran into the the left side of the keyboard. As he pulled on 
> >the
> >string, the pitch increased; as he let it retract, the pitch decreased. He

> >did
> >his vibrato very nicely with it.
> >

this sounds like the Ondes Martinot but since i didn't actually see it i could
be wrong. 

> >Does anyone have any ideas as to how to implement this? I don't know the 
> >first
> >thing about gears and such, but the best that I can think of, is using
some
> >mechanical parts to scale the half-meter or so range of motion on a 
> >keyboard to
> >the few centimeters range of motion on a pot.
> >
> 
> could use a 10 turn pot with a large pulley attached.. suppose a 3cm dia 
> pulley, this would be approx 10 cm circumference, so 10 turns of this = 
> 1metre... or even a normal 300 degree [5/6 of a turn] turning pot.. 50 cm 
> 300 deg would give a 60 cm circle circumf. which would be a approx 20cm dia

> pulley on a normal pot. or you can get really long sealed sliders which look

> like mini hydraulic cylinders used in industrial apps.. or a spring attached

> to a strain guage? sliding metal plate acting as variable capacitance in a 
> theremin stlye setup? optical sensor?

another interesting thing i've seen is a flexible resitor whos resistance
changes as you bend it. it was in a catalog for JDR? let me look around for it
when i get home and i'll write back.

-<mike>-

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