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Old 29th June 2010, 04:05 PM   #1
diyAudio Member
Join Date: Nov 2009
Location: Wichita, KS USA
Default RMAA usage question

I've been playing with RMAA a bit. I expect I'll buy the "full" version shortly. One thing thing that I've been trying to get my head around (maybe I'm overlooking the obvious)...

Is there a way to "zero" the system? What I mean is; I run the tests on the "soundcard" (a Behringer UCA222 at this point; doesn't look like it'll cut it for what I need but it was cheap). I get the measurements back and save them. Now that I have this "baseline" I want to subtract these measurements from a new measurement of the device under test (DUT). It seems to me this is the only way to know how the DUT performs. However, it doesn't look like there is a way to do this. Am I skewed (screwed?) in my thinking? I have a copy of TrueAudio RTA and once you've run a "calibration" it automatically "flattens" the system so you are seeing the result of only the DUT. I understand I have the numbers from the baseline and I can do the subtraction by hand but that doesn't do anything for the test graphs generated. Am I missing something?

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Old 10th July 2010, 03:19 AM   #2
okk is offline okk  China
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Join Date: Sep 2003
Location: Beijing
Same things.
I think RMAA did not want to open thier data files.
make it better.
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