[sdiy] linear vs audio tapers

[Stephen Begin]

When a schematic calls for a potentiometer but doesn't specify what type,
how do you know which to use?  Is it just a matter of the context in which
the pot is being used?  Or if it is not specified is it generally assumed to
be one type?  Is there any case where it's left up to users' preference?

I'm looking at this http://atlas.csd.net/~rjwsoft/statevariablefilter.html
and I guess I just don't have the experience to be able to guess with
confidence which type to use.

thanks,
Steve