Share your in-room measurements?

[Wayne A. Pflughaupt]

Hello! Coming from another thread - I have a question if there is a metric that would allow a more precise interpretation of the room response. This is the REW measurement I have done before applying any corrections:

View attachment 374366

At the waterfall:
View attachment 374364


It is not ideal of course, but is there a way to put on a number on how not ideal it is? Calculate some sort of difference from the target curve and integrate perhaps? Or one should rely on qualitative assessment by eye?

Waterfall graphs should only be 200 Hz and below. They aren't useful above that point.

Regards,
Wayne A. Pflughaupt

 

[Flup]

@Flup The Y-axis should be 60dB ( so for instance from 50-110dB).

Thanks, updated graphs below - unfortunately I have overwritten the original file, so now only the average remains...

 

[sigbergaudio]

@Flup Pretty uneven below 100hz, I assume no EQ has been applied. Is this two speakers and no sub(s)? I'd also say it looks a bit lean (too little bass) at least compared to the midrange. But then it falls off further beyond 1500hz so a bit hard to say how this really sounds. Depends on how you measured, acoustics in the room etc. Which means that it's hard to say what the "ideal" is without knowing more about the setup including the room. If you're happy with the sound, that's the most important thing! Which speakers are these?

 

[Flup]

@Flup Pretty uneven below 100hz, I assume no EQ has been applied. Is this two speakers and no sub(s)? I'd also say it looks a bit lean (too little bass) at least compared to the midrange. But then it falls off further beyond 1500hz so a bit hard to say how this really sounds. Depends on how you measured, acoustics in the room etc. Which means that it's hard to say what the "ideal" is without knowing more about the setup including the room. If you're happy with the sound, that's the most important thing! Which speakers are these?

Thanks for you answer - indeed, this is without any EQ applied. The setup is two speakers without subs - Cabasse Iroise 500, each with two woofers and a concentric mid-range / tweeter. Room is roughly 5 x 6 m, not treated acoustically, typical living room - sofa, table, bookshelves, etc. I am quite happy with the sound, but tend to increase the low's a bit using a built in controls on my amplifier (Yamaha AS-501), but there's definitely a lot of standing waves in the low frequencies.

 

[ozzy9832001]

Hi all,

These are my latest measurements after redoing my room treatments:

This is summation. Only EQ'd from 300hz and below. Rest is a few shelf filters for tone controls. Very happy with the results. This doesn't contain the +3dB low shelf from 120hz and below.

Dip @ 105hz is modal. Dip @ 2k is tweeter mismatch. Mic was slightly off position.

.

Waterfall @ 35dB which is the ambient room currently.

Very happy with this. Decay is uniform except @ 200hz which is from my windows.

Spectrogram -- I know people like to look it at.

105hz again modal issue. Unfortunately, it's the one thing I can't get rid of, but dip is very narrow and I honestly can't even tell it's there.

 

[sigbergaudio]

@ozzy9832001 Looks very good! Which speakers? Personally I would have a bit more slope (so more bass), unless this is a nearfield setup.

 

[dguillor]

Here’s before and after eq plots, psychoacoustic smoothing, for a distributed mode loudspeaker that I built and use in a mono setup. It’s unique in acting like a diffuse omnidirectional source. It’s a 48”x24”x5/32” 9 ply sheet of aircraft grade plywood with four exciters mounted at positions recommended by Monacor. I really like it. The sound is very similar all over a large room.

 

[MRC01]

After my wife vacuumed the tweeters of my Magnepan 3.6/R ( ) and I replaced them, I took a measurement to ensure they were good. Measured from the listener position with a pair of Rode NT1A mics, corrected for mic response. Grey is uncorrected, red is with parametric EQ, psychoacoustic smoothing.

Edit: add Spectral Decay

 

[Sacha]

After my wife vacuumed the tweeters of my Magnepan 3.6/R ( ) and I replaced them, I took a measurement to ensure they were good. Measured from the listener position with a pair of Rode NT1A mics, corrected for mic response. Grey is uncorrected, red is with parametric EQ, psychoacoustic smoothing.
View attachment 377904

I think you meant ex-wife

 

[Sacha]

 

[Keith_W]

View attachment 377935

View attachment 377936

View attachment 377937

That's incredible! How did you achieve that?

 

[Sacha]

That's incredible! How did you achieve that?

Thanks! It's pretty glorious to listen to / work on.

Careful placement + 30 GIK acoustic panels ranging from 6" to 17" thick + ATC SCM25mkII with dual Genelec 7360 + Trinnov Nova.

A lifetime of passion about music and audio and a soul-shriveling corporate career to pay for it all.

 

[Eleo]

Here are the measurements of my Lintons with dual subwoofer Yamaha SW 050. Eq Apo below 300 hz. The subwoofers are 7.5 ms delayed through a Dayton Dsp-LF. Frequency respons seems to me pretty good both objectively and subjectively. I wonder if I can add two more filters to fix peak and dip at 460 and 620 hz.

 

[er|κzvio1in]

Here are the measurements of my Lintons with dual subwoofer Yamaha SW 050. Eq Apo below 300 hz. The subwoofers are 7.5 ms delayed through a Dayton Dsp-LF. Frequency respons seems to me pretty good both objectively and subjectively. I wonder if I can add two more filters to fix peak and dip at 460 and 620 hz. View attachment 382010View attachment 382013View attachment 382012View attachment 382011

Your frequency response graph looks really good.

Before trying to add more eq I would do measurements at various positions (or MMM in a wide area) to check whether those peaks occur locally or not and if they are SBIR or related to room modes.

What I would do then is apply one very low Q PEQ boost between 200 and 800, with +5 dB gain or even more. Then meausure again and bring down a couple of peaks using narrower Qs.

I am a bit of a basshead and I prefer more bass especially because I often don't listen at loud levels so I would also choose a target curve that reflects a Harman curve with a bump below approx. 80 hz.

 

[Eleo]

Your frequency response graph looks really good.

Before trying to add more eq I would do measurements at various positions (or MMM in a wide area) to check whether those peaks occur locally or not and if they are SBIR or related to room modes.

What I would do then is apply one very low Q PEQ boost between 200 and 800, with +5 dB gain or even more. Then meausure again and bring down a couple of peaks using narrower Qs.

I am a bit of a basshead and I prefer more bass especially because I often don't listen at loud levels so I would also choose a target curve that reflects a Harman curve with a bump below approx. 80 hz.

Thank you for your response. This morning I have tried to add two filters at 460 and 620 and don't find things improve, actually it sounds a bit less natural. However you propose a different strategy. Maybe it can bring better results.

 

[Dovydas]

Hey community. After one year of owning UMIK-1, I have finally found some time to do my in room measurements and to be honest I'm not too happy about it. Something is going on in subwoofer crossover region. LFE measurements alone does not look too bad, but when I measure LCR with subs, it's much worse. I'm using MultEQ-X for room correction. My audio setup is in my signature. All speakers are set to small with 80 Hz crossover, except atmos is 100 Hz. Cutoff mode is set to Auto, but not sure how it correlates with crossover settings. Any ideas?

 

[Eleo]

Hey community. After one year of owning UMIK-1, I have finally found some time to do my in room measurements and to be honest I'm not too happy about it. Something is going on in subwoofer crossover region. LFE measurements alone does not look too bad, but when I measure LCR with subs, it's much worse. I'm using MultEQ-X for room correction. My audio setup is in my signature. All speakers are set to small with 80 Hz crossover, except atmos is 100 Hz. Cutoff mode is set to Auto, but not sure how it correlates with crossover settings. Any ideas?

In my limited experience, measurements of subwoofers only are of little value, because in the bass range there is a lot of interference between mains and subwoofers. My advice is to continue measuring, experimenting with different locations and adding delay to the subwoofers. The most promising setup will be EQ in mono. I leave my speakers - Wharfedale Lintons - full range to get a smoother bass.

 

[LarsF]

This Is my measures, its a ver small room with big speakers
Red with Dirac
Green without, the top between 500 and 600Hz is problematic without Dirac

Waterfall

and Spectrum

 

[OCA]

This Is my measures, its a ver small room with big speakers
Red with Dirac
Green without, the top between 500 and 600Hz is problematic
View attachment 386488
Waterfall
View attachment 386489
and SpectrumView attachment 386490

Your system has European AC ground loop problem at 50Hz and its harmonics:

 

[LarsF]

Your system has European AC ground loop problem at 50Hz and its harmonics:

View attachment 386494

Thanks for spotting that, never notice anything in the speakers. Do you have any tips how to cure it?