[sdiy] paralleling piezos

[karl dalen]

Ah yes! Barry has a diy in his book, i recall
Paia had one using a guitar string.

http://www.instructables.com/id/DIY-Force-Sensitive-Resistor-FSR/

This lady does a lot with force sensors.
http://www.instructables.com/member/Plusea/

><Alwyn Lloyd <zarquin at ucc.gu.uwa.edu.au>:


> Datum: tisdag 8 februari 2011 06:51
> 
> Hi All,
> 
> > How do they solve polyphony on touch sensitive pads
> that Drum machines
> > like the AKAI MPC series uses?
> 
> The Akai MPC Series use Force Sensitive Resistors, as do
> the DrumKAT drum 
> pads..
> 
> if you want to play with the mpc sensors them, you can
> actually order 
> replacement sensors 
> etc from http://www.mpcstuff.com/
> 
> Unfortunately, as far as I've been able to work out, you
> can't easily 
> separate out each sensor as they're in some sort of matrix
> arranged mat 
> thing..
> 
> 
> Cheers,
> Alwyn
> >
> > In the past i recall drum machines used to be one
> piezo per pad and
> > quite high tresholds to reduce interference then i
> recall Roland used
> > something like 4 for all 16 pads spread out and a
> smart algorithm to
> > detect which one where hit and how hard, now i heard
> that on later
> > MPC's they use some sort of resistive math with a in
> built grid or
> > something to detect pad and velocity?
> >
> > Hal Chamberlin did a polyphonic velocy sensitive stick
> board for
> > Kurtweil using a resistive, (cant remember the name of
> the material).
> > It's in this interview somewhere.
> > http://interviews.sonikmatter.com/2002/hal_chamberlin.php
> >
> > Reg
> > KD