|
|
Post by msimanyi on Jan 21, 2022 13:12:09 GMT -5
Tangential question: does anyone know why new posts in this thread aren't elevating it, at least in my browser? It has an icon that looks like an anchor, and when I mouse over that I see a message "This thread is falling."
It seems like this is an important thread to keep an eye on. Do I have some setting messed up for my User ID?
|
|
|
|
Post by marcl on Jan 23, 2022 12:36:33 GMT -5
Has anyone tried 3.2.0 or 3.2.1 yet? I've seen some discussion on the AVS Forum about issues. Also something about corrections below 20Hz no longer being possible.
People need to test their software! This is the second time in a little over a year that Dirac put out a release that was so broken they had to follow quickly with another.
|
|
LCSeminole
Global Moderator 
Res firma mitescere nescit.
Posts: 20,847
|
Post by LCSeminole on Jan 23, 2022 13:48:13 GMT -5
Tangential question: does anyone know why new posts in this thread aren't elevating it, at least in my browser? It has an icon that looks like an anchor, and when I mouse over that I see a message "This thread is falling." It seems like this is an important thread to keep an eye on. Do I have some setting messed up for my User ID? Thanks for bringing that to my attention, I too have noticed this, so I’ve simply “Stickied” this thread and everyone can locate it at the top the section. |
|
|
|
Post by fbczar on Jan 23, 2022 13:51:48 GMT -5
Has anyone tried 3.2.0 or 3.2.1 yet? I've seen some discussion on the AVS Forum about issues. Also something about corrections below 20Hz no longer being possible. People need to test their software! This is the second time in a little over a year that Dirac put out a release that was so broken they had to follow quickly with another. Thanks for the warning! |
|
LCSeminole
Global Moderator
Res firma mitescere nescit.
Posts: 20,847
|
Post by LCSeminole on Jan 23, 2022 13:57:20 GMT -5
Has anyone tried 3.2.0 or 3.2.1 yet? I've seen some discussion on the AVS Forum about issues. Also something about corrections below 20Hz no longer being possible. People need to test their software! This is the second time in a little over a year that Dirac put out a release that was so broken they had to follow quickly with another. Thanks for the warning! I last used v3.1.2 successfully to load three different filter sets, so I’ve just not needed to use the Dirac Live software since late September. |
|
|
|
Post by marcl on Jan 23, 2022 14:08:12 GMT -5
I last used v3.1.2 successfully to load three different filter sets, so I’ve just not needed to use the Dirac Live software since late September. + fbczar Same here ... 3.1.2 ... and my friends would be astounded to hear I have neither done a Dirac calibration nor REW measurement since September! Not sure if 3.2.1 is buggy but apparently 3.2 had a significant issue. |
|
|
|
Post by leonski on Jan 23, 2022 14:48:32 GMT -5
I last used v3.1.2 successfully to load three different filter sets, so I’ve just not needed to use the Dirac Live software since late September. + fbczar Same here ... 3.1.2 ... and my friends would be astounded to hear I have neither done a Dirac calibration nor REW measurement since September! Not sure if 3.2.1 is buggy but apparently 3.2 had a significant issue. If you are satisfied AND got it 'right'? And are not obsessive about 'measuring' which just confirms.......something......? Why would you NEED to 'rerun'  I'm not suggesting 'one and done', but once you are past your learning curve and have a stable system? Don't Touch That Dial |
|
LCSeminole
Global Moderator
Res firma mitescere nescit.
Posts: 20,847
|
Post by LCSeminole on Jan 23, 2022 15:18:34 GMT -5
+ fbczar Same here ... 3.1.2 ... and my friends would be astounded to hear I have neither done a Dirac calibration nor REW measurement since September! Not sure if 3.2.1 is buggy but apparently 3.2 had a significant issue. If you are satisfied AND got it 'right'? And are not obsessive about 'measuring' which just confirms.......something......? Why would you NEED to 'rerun' I'm not suggesting 'one and done', but once you are past your learning curve and have a stable system? Don't Touch That Dial That's exactly where I'm at, as I've been extremely happy with my setup room-correction-wise. The only reason I had to re-run Dirac Live in September was new furniture, area rug and speaker placement. |
|
|
|
Post by leonski on Jan 23, 2022 20:32:45 GMT -5
If you are satisfied AND got it 'right'? And are not obsessive about 'measuring' which just confirms.......something......? Why would you NEED to 'rerun'  I'm not suggesting 'one and done', but once you are past your learning curve and have a stable system? Don't Touch That Dial That's exactly where I'm at, as I've been extremely happy with my setup room-correction-wise. The only reason I had to re-run Dirac Live in September was new furniture, area rug and speaker placement. Rearrangements / additions / subtractions to the room AND system is a VALID reason to rerun..... But in an otherwise stable sytem which is ALSO making satisfying 'noises'? No reason whatsoever to endlessly keep re-running.... |
|
|
|
Post by hsamwel on Jan 24, 2022 7:22:27 GMT -5
That's exactly where I'm at, as I've been extremely happy with my setup room-correction-wise. The only reason I had to re-run Dirac Live in September was new furniture, area rug and speaker placement. Rearrangements / additions / subtractions to the room AND system is a VALID reason to rerun..... But in an otherwise stable sytem which is ALSO making satisfying 'noises'? No reason whatsoever to endlessly keep re-running.... Some of us seem to have Dirac calibration as a hobby.. Each to their own.. I haven’t done a recalibration for about 10 months now.. I have taken my measurement and recalculated it with each new Dirac version but that’s it. But I think it’s good that some does.. Otherwise there would be lot less bugs found. |
|
|
|
Post by marcl on Jan 25, 2022 11:03:40 GMT -5
Okay, not usually one to be a crash test dummy, but since I save my measurements as well as projects I installed DL 3.2.1 and opened the last set of measurements that I did back on September 1. Here's what I found: - You can no longer pull the left curtain lower than 20Hz! This is a problem for me. My subs go down to 16Hz and there's a big room resonance that extends below 20Hz. So leaving it uncorrected leaves me with a several db bump.
- But .... it seems if you load a target curve made in a previous version that happens to have the left curtain lower than 20Hz ... and you don't touch anything! ... it leaves the curtain where it was.
- There's now an option to Disable Delay/Gain correction. Yep, you can do it. I tried it and sure enough in the Impulse graphs in Filter Design the impulse responses are no longer aligned. I assume they're still corrected, but not aligned to each other.
- I loaded this new project into the XMC-2 and confirmed that this option does not magically give us access to the Distance settings with a Dirac slot selected. So yeah, useless to us.
That's it for now ... I put my Equalization settings back to the September version. Right now I see no reason to use 3.2.1.
|
|
|
|
Post by leonski on Jan 25, 2022 16:07:55 GMT -5
Doesn't a large room node at 20hz imply a TOTAL bounce distance of over 50 feet? That's a largish space.....
|
|
|
|
Post by marcl on Jan 25, 2022 16:32:42 GMT -5
Doesn't a large room node at 20hz imply a TOTAL bounce distance of over 50 feet? That's a largish space..... The fundamental resonance is the frequency whose half-wavelength is the room dimension. In my case that's about 20Hz for the length axial mode. Subsequent resonances for the length axial mode will be multiples of 20Hz. But I don't have a big peak at 20, I have a HUGE peak at 40 and it does not drop to zero until well below 20Hz. So here's the problem ....  |
|
|
|
Post by msimanyi on Jan 25, 2022 17:00:38 GMT -5
Wow - that's an impressive peak!
Thanks for posting marcl. I'm planning to do my first MiniDSP multi-sub run tonight - especially now that my main mono amps arrived back to me just a few moments ago - and I was planning to use 3.2.1 which I installed over the weekend.
I'll be sure to run that in 3.1.2 instead...
Mike
|
|
|
|
Post by marcl on Jan 25, 2022 17:21:53 GMT -5
Wow - that's an impressive peak! Thanks for posting marcl. I'm planning to do my first MiniDSP multi-sub run tonight - especially now that my main mono amps arrived back to me just a few moments ago - and I was planning to use 3.2.1 which I installed over the weekend. I'll be sure to run that in 3.1.2 instead... Mike I kind of think it's best to use 3.1.2 for now and let 3.2.1 simmer a while longer. The problem is, NOBODY admits to everything they did in a software release. Look at the Dirac change log and it basically says there is nothing in 3.2 or 3.2.1 that we would care about. Except 3.2 was broken. And the curtain behavior changed. And ... I just opened 3.2.1 again to try a couple things to see if the curtains would move ... and I get NO left curtain at all now! And that's a problem too. Now, even if I load my old target curves, I get no left curtain. So the behavior is weird. Look here with no targets loaded. And notice, it doesn't start up with the old default Dirac target with bass boost and treble dip. Weird.  Unfortunate thing is, they may have actually tweaked the algorithms in a way that would benefit us, but we don't know. Good luck with your miniDSP! |
|
|
|
Post by marcl on Jan 26, 2022 9:20:01 GMT -5
Useful info from Flavio (works for Dirac) from the AVSForum thread:
as far as the curtain is concerned the new limitation to 20 Hz (from 10 Hz) is due to the fact that measurements below that frequency can be unreliable as affected by ambient noise even if inaudible.
With reference to issues mentioned on the first page of this thread let me add the following...
1- "Hump" at the low end of the subwoofer response - This is covered by the above, no correction is applied below 20 Hz
2- No low-pass filter on the LFE channel when Dirac's bass management is engaged - The low-pass filter has been added in the latest release
3- Dirac Live is incompatible with ceiling-firing Dolby Atmos-enabled speakers - We might consider a manual option in the future as suggested, it hasn't been prioritized yet as (if and when it happens) it's not likely that a slightly incorrect delay on a height speaker will significantly affect the audio experience
4- 3.2.0/3.2.1: Correction limited to 20Hz which leaves the response below uncorrected - This is intentional, the noise below 20 Hz is often huge and we have a high pass filter at (I think 10 Hz) to mitigate some of this.
|
|
|
|
Post by msimanyi on Jan 26, 2022 10:52:21 GMT -5
Thanks for posting that marcl.
What would happen if they bump up that 10 Hz high pass filter (HPF) a bit. I know he notes that point is from memory which allows a possible error, but wouldn't a 15 Hz filter make more sense for most people?
Or is the nature of LPF / HPF filters that they're processed like a crossover, with a 12 dB or 24 dB slope? If that's the case, 10 Hz could be the upper limit that allows for 20 Hz signals to be unaffected by the HPF.
|
|
|
|
Post by marcl on Jan 26, 2022 11:50:49 GMT -5
Thanks for posting that marcl. What would happen if they bump up that 10 Hz high pass filter (HPF) a bit. I know he notes that point is from memory which allows a possible error, but wouldn't a 15 Hz filter make more sense for most people? Or is the nature of LPF / HPF filters that they're processed like a crossover, with a 12 dB or 24 dB slope? If that's the case, 10 Hz could be the upper limit that allows for 20 Hz signals to be unaffected by the HPF. No idea, but you're right that every filter has a slope and we don't know if they're using 12 or 24 or something more "brick wall". He says the system can get confused by ambient noise below 20Hz, and of course you can't correct ambient noise with a filter. I'm not so concerned about 16Hz, but I do have a bump at 20 due to my room resonance and you can get movie LFE down there. I'm going to test all this in the next couple days. Worst case I'll use the miniDSP to flatten the subs down there if I have to. |
|
|
|
Post by hanse1 on Jan 26, 2022 12:34:39 GMT -5
What about the crossover setting on my subwoofers when calibrating with Dirac? Crossover should be set as high as possible, right?
|
|
|
|
Post by fbczar on Jan 26, 2022 13:02:14 GMT -5
Useful info from Flavio (works for Dirac) from the AVSForum thread: as far as the curtain is concerned the new limitation to 20 Hz (from 10 Hz) is due to the fact that measurements below that frequency can be unreliable as affected by ambient noise even if inaudible. With reference to issues mentioned on the first page of this thread let me add the following... 1- "Hump" at the low end of the subwoofer response - This is covered by the above, no correction is applied below 20 Hz 2- No low-pass filter on the LFE channel when Dirac's bass management is engaged - The low-pass filter has been added in the latest release 3- Dirac Live is incompatible with ceiling-firing Dolby Atmos-enabled speakers - We might consider a manual option in the future as suggested, it hasn't been prioritized yet as (if and when it happens) it's not likely that a slightly incorrect delay on a height speaker will significantly affect the audio experience 4- 3.2.0/3.2.1: Correction limited to 20Hz which leaves the response below uncorrected - This is intentional, the noise below 20 Hz is often huge and we have a high pass filter at (I think 10 Hz) to mitigate some of this. Marc, Is Flavio saying that Dirac Live has never worked with ceiling mounted Atmos speakers or speakers that bounce their output off the ceiling? |
|
