• WANTED: Happy members who like to discuss audio and other topics related to our interest. Desire to learn and share knowledge of science required. There are daily reviews of audio hardware and expert members to help answer your questions. Click here to have your audio equipment measured for free!

Active Room Treatment (ART) by Dirac

slaweks

Member
Forum Donor
Joined
Apr 24, 2022
Messages
73
Likes
28
You can control the filters for each.

BACCH's default XTC filter for LF is ~90Hz. And then you can adjust as necessary to make sure that ART and BACCH don't overlap.

XTC is not effective at LF anyway.
Thank you. I was also thinking that maybe I could exclude LF and RF speakers from the ART duties, and Bacch could use them undisturbed, say in 5.2 setup.
 

Curvature

Major Contributor
Joined
May 20, 2022
Messages
1,060
Likes
1,321
Thank you. I was also thinking that maybe I could exclude LF and RF speakers from the ART duties, and Bacch could use them undisturbed, say in 5.2 setup.
I have no opinion about what would be optimal there. I use neither multichannel nor BACCH.
 

beatelund

Member
Forum Donor
Joined
Oct 3, 2019
Messages
39
Likes
97
Location
Sweden
Has anyone seen any before and after measurements of DL-ART taken via REW out in the wild yet?
Yes i have!
It is a open space with a lot of reverb, so the impulse and waterfall is not so good to start with.
But The difference from BC to ART is very big.
 

Attachments

  • 2 ART V3.1 VS BC V1 SPL LFE.jpg
    2 ART V3.1 VS BC V1 SPL LFE.jpg
    233.4 KB · Views: 817
  • 3 ART V3.1 VS BC V1 IMP LFE BC.jpg
    3 ART V3.1 VS BC V1 IMP LFE BC.jpg
    312.1 KB · Views: 214
  • 3 ART V3.1 VS BC V1 IMP LFE ART.jpg
    3 ART V3.1 VS BC V1 IMP LFE ART.jpg
    307.3 KB · Views: 200
  • 4 ART V3.1 VS BC V1 GD LFE BC.jpg
    4 ART V3.1 VS BC V1 GD LFE BC.jpg
    218.7 KB · Views: 195
  • 4 ART V3.1 VS BC V1 GD LFE ART.jpg
    4 ART V3.1 VS BC V1 GD LFE ART.jpg
    208.8 KB · Views: 238
  • 5 ART V3.1 VS BC V1 WATER LFE BC.jpg
    5 ART V3.1 VS BC V1 WATER LFE BC.jpg
    381.9 KB · Views: 224
  • 5 ART V3.1 VS BC V1 WATER LFE ART-1.jpg
    5 ART V3.1 VS BC V1 WATER LFE ART-1.jpg
    400.9 KB · Views: 242

juliangst

Addicted to Fun and Learning
Joined
Dec 11, 2021
Messages
943
Likes
952
Location
Germany
Yes i have!
It is a open space, the impulse and waterfall is not so good to start with.
But The difference from BC to ART is very big.
What's your setup and how big is the room? Are there any passive treatments like bass traps?
 

beatelund

Member
Forum Donor
Joined
Oct 3, 2019
Messages
39
Likes
97
Location
Sweden
What's your setup and how big is the room? Are there any passive treatments like bass traps?
5x JBL M2
2x JBL 708i
4x 18" sub
2x 21" sub

ART was running 20-150hz on all M2s and subwoofers. BC was running <80hz.

Listening space is 6,5mx4,5m, but it is open on one side to the first floor. So the reverb is on The long side...
 

Attachments

  • IMG20230806171423.jpg
    IMG20230806171423.jpg
    244.9 KB · Views: 194
  • IMG20230806171728.jpg
    IMG20230806171728.jpg
    108 KB · Views: 194
  • IMG20230806212723.jpg
    IMG20230806212723.jpg
    123.8 KB · Views: 200

GXAlan

Major Contributor
Forum Donor
Joined
Jan 15, 2020
Messages
3,774
Likes
5,836
5x JBL M2
2x JBL 708i
4x 18" sub
2x 21" sub

ART was running 20-150hz on all M2s and subwoofers. BC was running <80hz.

Listening space is 6,5mx4,5m, but it is open on one side to the first floor. So the reverb is on The long side...
That's a very nice setup!
 

juliangst

Addicted to Fun and Learning
Joined
Dec 11, 2021
Messages
943
Likes
952
Location
Germany
5x JBL M2
2x JBL 708i
4x 18" sub
2x 21" sub

ART was running 20-150hz on all M2s and subwoofers. BC was running <80hz.

Listening space is 6,5mx4,5m, but it is open on one side to the first floor. So the reverb is on The long side...
Are the subs placed around the room or are you using a single bass array behind the screen?
Waterfall plots look really impressive
 

holdingpants01

Addicted to Fun and Learning
Forum Donor
Joined
Mar 18, 2023
Messages
617
Likes
922
Yes i have!
It is a open space with a lot of reverb, so the impulse and waterfall is not so good to start with.
But The difference from BC to ART is very big.
Amazing setup!
Could you share the mdat file? Or at least post the spectrograms, I find waterfalls extremely hard to read and impossible to compare
 

alont

Member
Forum Donor
Joined
Sep 1, 2018
Messages
96
Likes
180
Location
Seattle, WA
If ART is generating inverted sound waves to “cancel” sounds at the measured listening positions, would that mean that the system would sound “louder” in adjacent spaces or outside the listening environment?
Based on my understanding of how ART works, the "cancellation signal" output level is typically significantly lower in magnitude compared to the "original signal" output level. Noise levels in adjacent spaces would probably be very similar. Compared to traditional Dirac Live, though - I would imagine noise levels would be lower since ART wouldn't need to significantly boost low frequencies to combat nulls generated by room modes.
 

just1n

Active Member
Forum Donor
Joined
Feb 2, 2021
Messages
133
Likes
111
@alont Interesting thought. Hopefully ART is released for the X3800h. Love to find out for myself. Thanks for the input.

Edited typos
 
Last edited:

neRok

Senior Member
Joined
Oct 7, 2022
Messages
303
Likes
175
Location
Australia
But The difference from BC to ART is very big.
Yes that is very nice. Waterfall and GD are clearly improved.

Like the other poster asked, if you could share your mdat file, that would be helpful. If you have them, can you include individual sweeps of each component (without EQ, and with timing ref)?
 

beatelund

Member
Forum Donor
Joined
Oct 3, 2019
Messages
39
Likes
97
Location
Sweden
Amazing setup!
Could you share the mdat file? Or at least post the spectrograms, I find waterfalls extremely hard to read and impossible to compare
Yes that is very nice. Waterfall and GD are clearly improved.

Like the other poster asked, if you could share your mdat file, that would be helpful. If you have them, can you include individual sweeps of each component (without EQ, and with timing ref)?

ART, BC och No eq with all speakers

If you find anything interesting, please send me a message.

So you now, this is a open loft space with wooden floor and sealing. So dont kill me for the long decay times. But it still sounds pretty good!
Materials and design was a big part but i have done my best to get decent sound ;)
See pictures in my previously posts

was to big, so here is a onedrive link
 
Last edited:

Curvature

Major Contributor
Joined
May 20, 2022
Messages
1,060
Likes
1,321
ART, BC och No eq with all speakers

If you find anything interesting, please send me a message.

was to big, so here is a onedrive link
All in all very impressive.

Funky things happening in the RT60 section I'm not clear on.

Interesting how SBIR is still harder to control than LF.
 

holdingpants01

Addicted to Fun and Learning
Forum Donor
Joined
Mar 18, 2023
Messages
617
Likes
922
ART, BC och No eq with all speakers

If you find anything interesting, please send me a message.

So you now, this is a open loft space with wooden floor and sealing. So dont kill me for the long decay times. But it still sounds pretty good!
Materials and design was a big part but i have done my best to get decent sound ;)
See pictures in my previously posts

was to big, so here is a onedrive link

wow, thanks! It's just magic for the low end decay. It's working up to around 150Hz right?
 

Magnus

Member
Joined
Feb 25, 2020
Messages
63
Likes
48
I'm not seeing anything so spectacular about ART in the waterfall plot compared to simply having some very basic room treatments (carpet, drapes placed just so, bookshelves as diffusers, a brick wall behind my fireplace opposing a set of drapes as another diffuser)..... What can it do with already good results?

PSB Waterfall Plot.png
 

holdingpants01

Addicted to Fun and Learning
Forum Donor
Joined
Mar 18, 2023
Messages
617
Likes
922
I'm not seeing anything so spectacular about ART in the waterfall plot compared to simply having some very basic room treatments (carpet, drapes placed just so, bookshelves as diffusers, a brick wall behind my fireplace opposing a set of drapes as another diffuser)..... What can it do with already good results?

View attachment 313887

You could get rid of those deep nulls, also please post spectrogram on default settings rather than waterfall as you're showing only 20dB of decay, waterfalls can be deceiving when set up certain way

381291513_6296834600443126_3481606415679576484_n.png


381272450_1341394843472624_2135680638813751880_n.png
 
Last edited:
Top Bottom