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How to measure new in-room response after applying EQ

killitmore

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Hi folk, my system is: PC (Daphile OS installed) -> SMSL Dac -> Outlaw R2150 receiver -> Kef reference model 2 + SVS PB2000 pro.
I measured my in-room response by REW using my Windows laptop. Then I used the EQ result in REW to apply to my Daphile 10-band EQ filter.
Can anyone tell me how to measure my new in-room response with the EQ I applied in Daphile?
 
Hi, you can use
1. REW -> Tools -> generator and generate Sweep measurement signal to wav file:
rew-generator.png

2. Then upload and play the generated wav via daphile.

3. In REW measurement window you can use measurements from file functionality, Next you hit start button and it will wait for daphile to play the sweep wav file:
rew-measurements.png



Or you can record it offline and then Import Sweep recordings.
see REW manual:
 
For a fast way, find a sweep on a streaming service, play that into RTA, take a peak capture. Then apply EQ and do it again. This is a lot faster way to tune eq, since it is very quick to change a setting 1dB and remeasure.

You likely want to make sure that the sweep lines up closely with what REW does. Sometimes they are AVR mains sweeps and roll off for an 80 crossover, which works if you know about it (I use one, and a separate 20-200 sweep when I don't want to guess at/interpret the roll off.) And white noise on streaming is almost NEVER actual white noise. But once you find good reference files, you're set.
 
Or use this way of using REW: MMM Method which is similar to what Pareto suggests but a bit more controlled and repeatable.
 
Can anyone tell me how to measure my new in-room response with the EQ I applied in Daphile?

Measure the response before EQ. Apply EQ. Measure response with EQ. Compare. Come to the conclusion that the measured response looks better but sounds worse.
 
Or use this way of using REW: MMM Method which is similar to what Pareto suggests but a bit more controlled and repeatable.
I like mmm for areas like a couch, though I found a good single spot that works as a good proxy for mmm for my couch. For a single spot I use a single measurement.

The downside of the method I suggested is that you get no advanced measures. That's the main trade for speed.
 
Measure the response before EQ. Apply EQ. Measure response with EQ. Compare. Come to the conclusion that the measured response looks better but sounds worse.
Been there, done that.

Then I figured out what target curve I like, and since then I have not been there or done that.
 
Sometimes they are AVR mains sweeps and roll off for an 80 crossover, which works if you know about it (I use one, and a separate 20-200 sweep when I don't want to guess at/interpret the roll off.)
Example, both at a system level that gives me 65db white noise in REW. The full AVR sweep is a wide wave that rolls up and down, and better shows what my bouncy floor does to the 40hz dip with music than an REW sweep.

1/6 smoothing I am pretty sure. Speakers start to roll off at 40, no sub. My floor has a fundamental of about 32hz, btw, but iirc there is not eq set below 70 on the eq settings for these.

bass and over200 two graphs red no eq.jpg
 
Hello, my system is C (Daphile OS installed) - > SMSL Dac-> Outlaw R2150 Receiver - > Kef Reference Model 2 + SVS PB2000 pro.:p
I measured the response in the room by REW using a Windows laptop. I then used the EQ results from REW and applied them to a 10-band EQ filter from Daphile.
Can someone tell me how to measure the new indoor response using the EQ I applied in Daphile?

I think it would be interesting for you to compare the sine sweep FFT method (using REW and/or other measurement tools) vs. the well-QC-ed white noise (flat 15 Hz to 22 kHz) recording-averaging FFT method.

See post #404 (and #392) in my project thread for the pros of recorded white noise averaging FFT analysis.

I hope these posts will also be of interest and reference to you; I do not like too much smoothed (like psychoacoustic smoothing) in room SPL curves.
In particular, the end of #297 (remote thread) by Dr. Floyd Toure,
Dr. Toole wrote there;
You don't have to worry about small ripples. Looking at the curves of the room, which is very smooth and high-resolution, I strongly suspect that something went wrong. A measuring microphone is not a replacement for two ears and a human brain. Happy landing!
as well as #315 (remote thread) by Dr. Floyd Toole, #125 (remote thread).

By the way, have you "calibrated" frequency response of your measurement microphone(s)?
In my case, I use reasonably affordable BEHRINGER ECM8000 having cross-calibrated with precisely calibrated EARTHWORK M50 (ref. here).
 
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By the way, have you "calibrated" frequency response of your measurement microphone(s)?
In my case, I use reasonably affordable BEHRINGER ECM8000 having cross-calibrated with precisely calibrated EARTHWORK M50 (ref. here).
@dualazmak I have not. Is there a way to measure the calibration for a mic using REW? Could not find my mic calibrated file online.
My mic is https://www.amazon.com/MonkeyClimb-...085X4DGZ5/ref=cm_cr_arp_d_product_top?ie=UTF8


I have tried different speakers: Wharfdale linton 85, Elac unifi Ub5 and currently Kef reference model 2. I wonder why my in-room measurements always have a huge peak from 1kHZ to 2kHZ? I thought the room only messup the frequency below 500Hz. I checked anechoic response measured by Amir for Elac and Erin for Wharfdale and those speakers do not have that peak.
1727539300084.png
 
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