Psuedo-Log-Taper Pots

[We Are As1]

Hello list members,

I seem to remember hearing something about a trick which can be done to get a
pseudo-log-taper response out of a linear potentiometer.  I think it was done
by adding a resistor or two in parallel with the pot.  Has anybody ever tried
this?  Exactly how should it be wired, and how should the resistor values be
selected?  My applications for this:  one would be a three-terminal
attentuator (for audio), and the other would be using the pot as a two-
terminal variable resistor (such as the speed/freq. control in a typical two-
opamp square/triangle LFO circuit).

I imagine that if this trick works, it could also be used to affect a psudo-
reverse-log-taper response, just by wiring it backwards, no?

Thanks,
Michael Bacich