Proper pitch wheel with a LTC1799

[Rolbista]

Hey guys, I'd like to get some opinions of people experienced with LTC1799 on how feasible it would be to use the aforementioned chip to create a proper pitchbend wheel with 1 octave up/down range and a spring loaded potentiometer. The keyboard I have is Casio SA-65.

[Circuitbenders]

It's probably be possible but i suspect it would take a lot of experimentation to get it in any way accurate, and the pitch curve might be a little odd.

It depends what kind of pot you get in pitch bender assemblies, although it shouldn't be too hard to create a pot that covers a certain range from one resistance value to another, if your initial pot is big enough.

[Rolbista]

I guess it wouldn't be possible after all, at least not in the reange i'm interested in, because the LT1799 has a max. frequency of 33Mhz and the Casio is clocked with a 21.75 Mhz (or something similar) crystal, so the LT1799 would be unable to double the clock frequency to get an octave up

[Circuitbenders]

That does assume that the frequency response is linear, which i suspect it wouldn't be.