I realise that you're looking for a computer based solution, but here's something I've been using myself lately. I used to have a Behringer DEQ 2496 digital EQ in my rack for FOH
. The outputs went south on me but the unit
has a true FFT analyser built in, so I hung on to it after buying a Driverack. Behringer also sells a calibrated mic, but you can use and calibrated (flat
as long as you know the input sensitivity.
At any rate, it sits in a 1RU rack on top of the dog house
of my Soundcraft now, with the mic pointed at the room. As an additional feature, I have a pair of monitor
outs, one for cans and one for a wedge
. I use the wedge
out, through an impedance
matcher into the left input and then anything I solo comes up on the analyser with the push of a button
. Once I have the room set up I just switch
over which inputs it's looking at and whatever I solo is displayed. Handy for tweaking monitor
mixes on the fly from 150 feet away.
Anyway, they're going on eBay for around US$250 used. The calibrated mic should be about another US$30. It's a bit
pricier than a software solution, but if your situation doesn't include a laptop it's worth a look.