as one of the previous posters said, best thing is probably to work out what the circuit actually
needs and try to supply that instead of trying to create the right sort of variable resistive
divider.

otoh: a handy part for this sort of application is the h11f1. it's as close as i have seen to a
simple voltage controlled resistor. never used it myself, but i have seen it used in a couple of
audio compressor-limiter-noisegate type designs.
worth a quick look anyway.

Regards,
Simon

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