Bob,

I've tried using this and I had one somewhat big problem with it:

I can't figure out how to get the display to slow down or show some kind of inertia to the meters. I tried using it to help pink/ring out a room on a live setup the other day and it was just too jittery of a display to work with.

I ended up using fre(k)ascope from smart electronix. That one is pretty cool - you might want to check it out. It even has critical band frequency divisions, which I use often in my real day job.

http://mdsp.smartelectronix.com/ffttools/

-Scott

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