[Scott Dorsey]

Lew wrote:
I'm more interested about the "yes" part. What software creates a PC-
controlled graphic equalizer? How can I use a PC to tailor the
signals send to a speaker to compensate for that speaker's resonances?

First of all, a graphic is useless for the job, because it has fixed-width
filters on centers that you can't change. If you're going to try and
compensate for speaker problems, a parametric is the tool you want.

Most audio editing applications will have some rudimentary parametric
equalizer at least.

However, as pointed out, equalization won't fix room problems. It can
help deal with some kinds of speaker problems, but it's generally not
a good way to deal with them. For example, if you have a cabinet resonance
in the speaker, the frequency response problem is just a _symptom_ of the
cabinet resonance. If you equalize it, the impulse response is still all
wrong, and you will still hear hangover effects. The solution is to fix
the cabinet so it is more stable.

Equalization will fix only frequency response problems, and then only those
that are minimum phase. Some drivers do exhibit problems like that.
--scott

--
"C'est un Nagra. C'est suisse, et tres, tres precis."