who to manage 1/X ?

[Tony Allgood]

Hi All,

>It is just a group of log/anti-log circuits with access to the current
summing points. BUT you can do the same thing with a CA3046 and some
quad op-amps.

This is quite a coincidence. I have just put a anti-log/log module into
my modular synth. At first it started off as a simple Hz/V to 1V/oct
convertor and vice versa, but then I thought about the possibility of a
log maths module. I have just finished it today, and only just started
playing with it but it does seem to offer some interesting possibilities
for the experimenter. I think it may end up as one of my Oakley PCBs,
but I have a little more work to do on it yet. There are different
requirements for simple Korg-Moog conversion than for complete log
maths, but the basic circuit is the same. I'll be bringing it to the
synth-DIY meet too...

Now a question: what is the scaling factor for Korg monosynths in Hz/V
for the basic keyboard range?

Regards,

Tony Allgood  Penrith, Cumbria, England

Oakley Modular Synth and TB3030:
www.techrepairs.freeserve.co.uk/projects.htm
My music: www.mp3.com/taklamakan