Comparing DiracART and GLM with one subwoofer

[Mort]

Did you measure GLM with dirac ART over the top?
Does beautiful looking result in an audible difference?

Nice one giving it a good trial!

I am still working on that. Hit a bug last night that kept me from completing the Dirac calibration, but I'm almost there.

 

[kawauso]

Isn't this whole ART system based on providing an supporting acoustic stimulus to the assisted sound channel, from different locations of the room? The more stimulus channels and the more different locations of the room they are placed, the better ART can work.

Did I understand correctly that this system is only two-channel, with one subwoofer? So if that's the case, then ART can't do much, even in theory, with so few playback channels. Non-existent support channels will produce non-existent results.

CAPABLE (really capable and not some typical surplus crap) surround and ceiling speakers would therefore be a prerequisite for good ART results. A acoustic 4 + 4 support group (four in the ceiling, four in the basic surround position), for example. That's when ART would have a chance to start getting actual effect.

Of course, most people run out of money at this point and family living room installers are in big trouble anyway. But if this ART is to make a real difference and achieve those advertised things, that's how you could get them. At least in theory.

Have you ever used ART?
ART works well even with a small number of support speakers, and it functions effectively in 2.0 or 2.1 channel environments as well.
Compared to configurations with many support speakers, there is not much difference when using mutual support between the front speakers and a single subwoofer.

 

[Mort]

Did you measure GLM with dirac ART over the top?

I did finally and there isn't much to report. DiracART alone was very similar. I'd have to get my methodology and execution cleaner to reliably hear anything that subtle.

Does beautiful looking result in an audible difference?

So far, I cannot hear any difference between GLM and DiracART, I'll be honest. Both are very capable in my room with my one sub.

Tomorrow I can test with two subs and there I think we will see the limitations of GLM and the strengths of DiracART.

 

[AudioJester]

I did finally and there isn't much to report. DiracART alone was very similar. I'd have to get my methodology and execution cleaner to reliably hear anything that subtle.



So far, I cannot hear any difference between GLM and DiracART, I'll be honest. Both are very capable in my room with my one sub.

Tomorrow I can test with two subs and there I think we will see the limitations of GLM and the strengths of DiracART.

Sounds like you have reached the limit of what is possible in your room?

ART works best when things are the worst at baseline.

 

[janbth]

Dirac and GLM - just 10-200. Dirac looks beautiful.
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You are referring to ´1Sub´ in these measurements, but what channel (or channels) are you showing?

 

[Mort]

You are referring to ´1Sub´ in these measurements, but what channel (or channels) are you showing?

It's a full room measurement of L+R together.

 

[EngineerNate]

I would expect glm+ART to sound very similar to just art as ART should be doing most of what GLM does with a little special sauce on top for the decay control. The GLM step would just make the phase/eq corrections in ART less intense.

 

[Mort]

Sounds like you have reached the limit of what is possible in your room?

ART works best when things are the worst at baseline.

More or less, yes. On to immersive and/or cardioid! I do want to still test two subs but I'm waiting on cables.

I would expect glm+ART to sound very similar to just art as ART should be doing most of what GLM does with a little special sauce on top for the decay control. The GLM step would just make the phase/eq corrections in ART less intense.

Exactly. Several folks were interested so I ran it.

 

[john61ct]

MDAT as in Meitner Digital Audio Translator?

 

[montyliam]

How come the Dirac version drops off like a cliff below 20hz but GLM doesn't? Is it also apply a HPF to the subwoofer channel?

 

[Mort]

How come the Dirac version drops off like a cliff below 20hz but GLM doesn't? Is it also apply a HPF to the subwoofer channel?

DON"T GET ME STARTED. It's one of my hated things about GLM. It's a pain to do is the short answer, can only be done with PEQ which has to be re-added each time you recalibrate. So I deal with it in a Wiim because I'm just 2 ch digital. But I measure without the Wiim EQ on and that shows the GLM software shortcomings..

 

[Mort]

MDAT as in Meitner Digital Audio Translator?

REW file.

 

[EngineerNate]

How come the Dirac version drops off like a cliff below 20hz but GLM doesn't? Is it also apply a HPF to the subwoofer channel?

By default ART high passes everything at 20hz. You can turn this off.