Active Room Treatment (ART) by Dirac

[loddie88]

Would ART struggle with using a phantom center setup? Been trying to wrap my head around how it would handle support when the front L&R are both playing the same mono signal (the center).

 

[lessthanjoey]

Would ART struggle with using a phantom center setup? Been trying to wrap my head around how it would handle support when the front L&R are both playing the same mono signal (the center).

If it's bass it's not localizable anyway. To the degree it's at the upper end of that range I think it still works fine, they just have modifications to try to cancel room effects.

 

[Daka]

Would ART struggle with using a phantom center setup? Been trying to wrap my head around how it would handle support when the front L&R are both playing the same mono signal (the center).

It’s still two channels playing content doesn’t matter what content works the same. Only difference is you losing LR that usually are capable and would support ART and in phantom center setup LR are loaded with C so last thing you would want them to do is to support cancellation as well.

 

[IamJF]

Would ART struggle with using a phantom center setup? Been trying to wrap my head around how it would handle support when the front L&R are both playing the same mono signal (the center).

I would estimate they would just support the left and right speaker as usual. It's only <150Hz, there will be a lot of mono content anyways there.

 

[Fore]

Monoprice HTP-1, Denon/Marantz also has mentioned possible ART support in 2024.

Any update on the HTP 1 and ART?

 

[TimoJ]

Any update on the HTP 1 and ART?

Not really, it's still in (active) alpha testing and development.

 

[virusinho]

Good afternoon everyone! Does anyone have any information about the release of ART on Denon\Marantz?

@TimoJ Bro! I'm interested in an off-topic question. Alas, I don't know the configuration of your room, but the question concerns the audibility of low frequencies in rooms adjacent to a home theater. How different is the sound pressure emanating from the listening room when the ART is on and when it is off? Is it possible that turning the ART on increases the sound pressure outside the listening room? Unfortunately, I don't have a separate room for home theater, and a full room inside the room is impractical in my case, so I'm worried about not hurting the neighbors more because of the bass

 

[TimoJ]

@TimoJ Bro! I'm interested in an off-topic question. Alas, I don't know the configuration of your room, but the question concerns the audibility of low frequencies in rooms adjacent to a home theater. How different is the sound pressure emanating from the listening room when the ART is on and when it is off? Is it possible that turning the ART on increases the sound pressure outside the listening room? Unfortunately, I don't have a separate room for home theater, and a full room inside the room is impractical in my case, so I'm worried about not hurting the neighbors more because of the bass

Sorry, I haven't properly compared and currently my subwoofers are not operational (I'm painting their diy cabinets) so can't test right now.
But just based on "feeling", ART may actually reduce bass outside listening room/area.

 

[Fore]

Thank you Timo.

 

[IamJF]

When the "chancellation" from ART works it really should reduce outside SPL - but I don't think it's a lot. But I see no reason that it would increase it.
Simply EQ to flat already reduces outside noise cause when you fight those +15db room resonances these can't disturb the neighbourhood as much.

 

[tjcinnamon]

When the "chancellation" from ART works it really should reduce outside SPL - but I don't think it's a lot. But I see no reason that it would increase it.
Simply EQ to flat already reduces outside noise cause when you fight those +15db room resonances these can't disturb the neighbourhood as much.

I think you only remove room resonances from the measured when flattening at the measured position, not from the entire room. If there is a build up by some ventilation or a non-solid core door it will travel.

I think you’d want nulls by those weak points.

 

[IamJF]

The main room resonances are pretty stable around the walls and you find them through the room.
Reducing them is for sure a benefit - around walls would be the weak points.

But every calibration system should be able to do that. Not sure if ARTs chancellation gives a significant benefit here.

 

[sebna]

Quick few questions:

1. If ART goes only to 20hz what happens with below 20hz output. Is it filtered out with HPF?
2. If I have subs going to single digits in the room is there any way to use ART and get that output going?
3. If ART works below 150hz does it mean that over 150hz DIRAC Live takes over or if we use ART it just do correction in 20-150hz range?
4. If DIRAC Live kicks in over 150hz and we manually limit correction to 150hz would it mean that we get ART only without DIRAC Live engaging?

Thanks

 

[sebna]

And one more.

Does DIRAC has problem with UMIK1-2 troughing a lot of measurement errors or is is AMP / AVR dependent?

 

[apgood]

Quick few questions:

1. If ART goes only to 20hz what happens with below 20hz output. Is it filtered out with HPF?
2. If I have subs going to single digits in the room is there any way to use ART and get that output going?
3. If ART works below 150hz does it mean that over 150hz DIRAC Live takes over or if we use ART it just do correction in 20-150hz range?
4. If DIRAC Live kicks in over 150hz and we manually limit correction to 150hz would it mean that we get ART only without DIRAC Live engaging?

Thanks

The recent StormAudio webinar discussed these things

https://register.gotowebinar.com/register/5470500696621300058

https://register.gotowebinar.com/register/5018158314419447901