Active Room Treatment (ART) by Dirac

[TimoJ]

Did some testing with ART's 20Hz filter bypassed and added some (actually too much..) PEQ below 20Hz. I won't be using this, just wanted to check it out.

 

[OCA]

Thanks Timo - this is great and will definitely try at one point. And thanks to @OCA for another cool thing.

The sweeps in this link are a bit old. I have later fixed issues with FWL, FWR channels, etc. here:

Dolby Atmos measurement sweeps for REW - Google Drive

drive.google.com

The lossless Atmos sweeps (True HD) in this link contain a subwoofer sweep with LFE - 10dB embedded. These are bit perfect, play only in the channel in question and correctly volume leveled for Atmos sound object model.

Macs would not play lossless sweeps and they would use .mp4 sweeps (lossy Atmos) and with them you better use REW's internal LFE - 10 dB sweep.

 

[JRowland]

lol - fair enough!

However - by local household standards - I apparently always play things too loud !!!
(prefered SPL @ MLP is 72 to 75db continuous)

The one thing I would add, as a caution, is that from lengthy experience in IT, fans equates to dust. - hence I have a very very strong preference for solutions that remain fanless and depend on natural convection for cooling - as that minimises the "dust blanket" effect over the longer term...

Having said that, 15 years ago I used to have an ancestor of the T9 on my AVR... but that AVR ran seriously hot! (you could fry an egg on the top of the case at the back!)

My AVR is in a completely open "rack" - with air access from every side, and around 25cm of space above it as well.

I don't mind fans as a contingency - where they kick in under extreme conditions - but if the unit needs fans to be running under "normal" operating conditions, that rings alarm bells for me.

I wasn't trying to bust your chops or anything, glad you smiled

 

[Oddball]

The sweeps in this link are a bit old. I have later fixed issues with FWL, FWR channels, etc. here:

Dolby Atmos measurement sweeps for REW - Google Drive

drive.google.com

The lossless Atmos sweeps (True HD) in this link contain a subwoofer sweep with LFE - 10dB embedded. These are bit perfect, play only in the channel in question and correctly volume leveled for Atmos sound object model.

Macs would not play lossless sweeps and they would use .mp4 sweeps (lossy Atmos) and with them you better use REW's internal LFE - 10 dB sweep.

Many thanks again and much appreciated

 

[AudioJester]

I have a spare set of Genelec 8040b. If I add them as rears to my purely 2 channel 8361a setup, would it work with ART without a subwoofer?
Aiming to use the rear 8040b as support channels 50-150Hz.

 

[speakers4me]

Hey all I think I've found a way to quantify headroom requirements, and forgive me if this has already been addressed in this thread:

I have a 5.2 setup, all of my mains support each other and all my support filters are -10 db or less (and I'm not talking about the support level here, I'm talking about the magnitude of the actual filters shown when 'Show filters' is selected) . So if I want a speaker to play at 105 db and support 4 other speakers all playing at 105 db at the same time, then my speaker will need to be able to play (roughly) 105 + 95 + 95 +95 +95 db in a worst case scenario right? Isn't that only 106.4 db? so I only need an extra 1.4 db of headroom right? Not nearly as much as I was thinking. Am I wrong? Someone let me know.

 

[EngineerNate]

I have a spare set of Genelec 8040b. If I add them as rears to my purely 2 channel 8361a setup, would it work with ART without a subwoofer?
Aiming to use the rear 8040b as support channels 50-150Hz.

Yes. Not as capable down low as subs but should do well in the mid bass.

 

[EngineerNate]

I just did my first ART calibration on my 2.1 setup. It’s wild how much less reverberant the room is with it turned on vs off. I didn’t even mess with the defaults other than importing the 6db Harman curve.

 

[smygolf]

Yes. Not as capable down low as subs but should do well in the mid bass.

Art has a tendency to add a bit of support below your setting - i saw it on my setup.
Not an issue for me but it might be for others.

So in your case i would have it set to ~60 - 150hz
I might work just fine with 50hz but have it in mind that Dirac might try to add support below 50hz

 

[EngineerNate]

Anyone have a favorite house curve vs the standard Harman ones?

 

[Web Dove]

16 total channels, of them 5 subs max. ART firmware is available as a public beta that anyone can install and Dirac already sells ART licenses for the HTP-1.

Is it still true that there is beta firmware? Where might it be found for evaluation?

 

[Frank207be]

I just did my first ART calibration on my 2.1 setup. It’s wild how much less reverberant the room is with it turned on vs off. I didn’t even mess with the defaults other than importing the 6db Harman curve.

Same here except change of support frequency. Listening to Phil Collins "Against All Odds" and more hits. Sounds awesome

 

[Oddball]

A new member of ART family. Mini DSP 16 channel processor priced at $3.5K apparently (with ART included). Good to see that more hardware supports ART. I wonder what kind of a deal did Mini DSP strike with Dirac to include the full package.

miniDSP Tide16 - Holy Grail with 16 Channel Atmos/DTS:X, high SINAD

Just received the newsletter, sounds like the one to rule them all (rather expansive at 3500 USD, but ok) https://www.minidsp.com/products/ht-series/tide16 Hardware Features Processor: Quad Core ARM processor / 1.8GHz HDMI 2.0 + EARC/ARC interface (3x1) Included License: Dirac Live® 3.x full...

www.audiosciencereview.com

 

[TimoJ]

Is it still true that there is beta firmware? Where might it be found for evaluation?

Join the AVS Forum, it was released there and all the support is there. Start from this post:

https://www.avsforum.com/posts/64372061/

 

[EngineerNate]

Is it still true that there is beta firmware? Where might it be found for evaluation?

Just click the "i" in the top corner of the web interface and there's a note there with a button to push to upgrade to the V2 firmware stream. Took about 20 minutes.

I did run into the issue where the touchscreen freezes after and had to reboot.

Also, I had to go in and change my speaker settings (which are turned on or not) then change them back to get it to push the correct parameters to the Dirac app.

 

[OCA]

A new member of ART family. Mini DSP 16 channel processor priced at $3.5K apparently (with ART included). Good to see that more hardware supports ART. I wonder what kind of a deal did Mini DSP strike with Dirac to include the full package.

miniDSP Tide16 - Holy Grail with 16 Channel Atmos/DTS:X, high SINAD

Just received the newsletter, sounds like the one to rule them all (rather expansive at 3500 USD, but ok) https://www.minidsp.com/products/ht-series/tide16 Hardware Features Processor: Quad Core ARM processor / 1.8GHz HDMI 2.0 + EARC/ARC interface (3x1) Included License: Dirac Live® 3.x full...

www.audiosciencereview.com

and of course no custom FIR filters on any channel for the users - only PEQ from what I see in the web interface. Dirac is truly the best when all other alternatives are blocked.

 

[Oddball]

and of course no custom FIR filters on any channel for the users - only PEQ from what I see in the web interface. Dirac is truly the best when all other alternatives are blocked.

Looks like people are still loving it in the thread. I get your point though but nothing quite like it out there for that price.

Perhaps additional features might follow...Not that I am out there looking for a new AVP, but still good to see that more brands are getting into this niche market. Tonewinner is also due to come up with a new AVP that would support ART.

Revival of AVPs? Certainly looks like it. How are people going to make money? Well, probably not.

 

[smygolf]

A new member of ART family. Mini DSP 16 channel processor priced at $3.5K apparently (with ART included). Good to see that more hardware supports ART. I wonder what kind of a deal did Mini DSP strike with Dirac to include the full package.

miniDSP Tide16 - Holy Grail with 16 Channel Atmos/DTS:X, high SINAD

Just received the newsletter, sounds like the one to rule them all (rather expansive at 3500 USD, but ok) https://www.minidsp.com/products/ht-series/tide16 Hardware Features Processor: Quad Core ARM processor / 1.8GHz HDMI 2.0 + EARC/ARC interface (3x1) Included License: Dirac Live® 3.x full...

www.audiosciencereview.com

A minidsp product that handles Bitstream ?
Must be the first one

 

[Derboy]

Guys what's the consensus on the following?

1. Speaker support ranges - Should these be based on the useable energy being shown on the pre-correction response graphs at the MLP for each speaker or simply based on the capabilities of the F3 (plus a buffer) value of each speaker regardless of how it performs in-room?
2. F-support High of "supporter speaker" to "supported speaker"- should this be the same as FSISO or up to the F-Support Low value of the speaker that it's supporting? If 150hz, do you reduce this for speakers close to the MLP to a non-localised range such as 80hz for example?

 

[thcdru2k]

and of course no custom FIR filters on any channel for the users - only PEQ from what I see in the web interface. Dirac is truly the best when all other alternatives are blocked.

Unfortunate consequence of licensing deal; Dirac must be the best look how universal it is