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Seeking Help Using REW - Feedback Loop Issue

Posted: Mon Aug 26, 2019 9:42 pm
by Warrior
During the "Soundcard Calibration" process, I need to adjust my monitor input level to get the input signal level near -12dB. In doing so, I seem to be creating a feedback loop. I have monitoring engaged and am feeding back into the inputs and I am not sure what to do to correct this and still get the right level.
REW Capture 1.jpeg
When I set the interface software mixer to mono, it seems to resolve the issue but I have a feeling this is still not correct.
REW Capture 3.jpeg

Re: Seeking Help Using REW - Feedback Loop Issue

Posted: Tue Aug 27, 2019 12:00 am
by DanDan
Soundcards etc. are typically flat within less than a dB. I see no need for SoundCard Calibration.
DD

Re: Seeking Help Using REW - Feedback Loop Issue

Posted: Tue Aug 27, 2019 10:35 am
by Warrior
DanDan wrote:Soundcards etc. are typically flat within less than a dB. I see no need for SoundCard Calibration.
DD
Just following Stuart's instructions in this thread.

http://johnlsayers.com/phpBB2/viewtopic.php?f=3&t=21122

Re: Seeking Help Using REW - Feedback Loop Issue

Posted: Thu Aug 29, 2019 9:38 am
by Warrior
Got it figured out, with the help of tech support at Audient.
REQ Good Calibration.jpeg

Re: Seeking Help Using REW - Feedback Loop Issue

Posted: Thu Aug 29, 2019 9:57 am
by Soundman2020
Got it figured out, with the help of tech support at Audient.
Great! That looks fine now.

Time to do some tests! :) :thu:


- Stuart -

Re: Seeking Help Using REW - Feedback Loop Issue

Posted: Sat Aug 31, 2019 7:44 am
by Warrior
Soundman2020 wrote:
Got it figured out, with the help of tech support at Audient.
Great! That looks fine now.

Time to do some tests! :) :thu:


- Stuart -
I ran into another snag. I am on step #3 - which is calibrating REW to real sound levels. I've followed the instructions but when I play the pink noise I do not get anywhere near -18dB on the input. Even if I have the volume on my interface cranked.

Am I supposed to see -18dB at this point before adjusting mic preamp and adjusting sound level to 80 dB?

Re: Seeking Help Using REW - Feedback Loop Issue

Posted: Sun Sep 01, 2019 1:09 am
by Warrior
I think I figured it out.
Let's hope so.... just completed my REW measurements. ;-)