ESP progress#1

[tomg]

I thought some of you might be interested in my inital 
ESP experiments. It is working well enough for me to 
invest in a pair of 100K 4-ganged pots to try and 
replicate the original circuit. I think 4 2-ganged
would work just as well maybe even give more control. 

The circuit under test is a mic-preamp->single high-cut 
filter->339 f/v converter->single low-cut filter->test 
vco cv.

I could not get the signal out of the 4069 I have it
running at +-7.5V I do not know if this is correct or
not, but skipping over it directly to the final filter
sorta works.

The sample was made with an open mic over the 4" speaker
in my bench amp. The original siginal is mixed with a
non-gated 1v/oct test oscillator so there is a referance
you can hear. 294K
 
http:/www.tomg/vivid.net/misc/esp1.wav

-tg