Simple Pitch to Voltage converter?

[Rodgre]

I'm sure we've discussed this before, but a Youtube thread on the Tape Op message board has got me interested again in making some kind of simple monophonic pitch-to-voltage converter.

The thread was talking about the Korg MS-20 analog synth and how it has an internal P-to-V so you can run an external signal into it.

I would love to build something like that, maybe something like the old 360 Systems Slavedriver?

Roger

[Mark Hammer]

The MS-20 circuit is actually not that complicated.  The brunt of it is really assorted tunable filters aimed at identifying the specific frequency content you wanted converted.  The Penfold P-2-V unit I have posted on my site seems to work fine from comments.  I've populated two  of them but have yet to hook either one up so I can't comment myself.

I imagine there are sundry circuits with F/V chips like the 4151 or 9400 but I haven't tried any of those either.

[Johan]

LM2907 and LM2917 or VFC32
j

[gez]

http://www.diystompboxes.com/smfforum/index.php?topic=58695.0

Scroll down for f-to-v converter.

Would need to be rejigged (not difficult to do).

[markusw]

This one might be interesting too (page 13-16):

http://www.moogmusic.com/manuals/HotRodEtherwav.pdf

Would need some low pass filtering though to get 50/50 duty cycle..... or maybe a fundamental extractor.

[StephenGiles]