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Dirac Live 3.10.10 vs 3.11.0

Jimi Floyd

Active Member
Joined
May 5, 2022
Messages
216
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862
Location
Pisa, Italy
First of all Merry Christmas to everybody,

Since November there is a new version out of Dirac Live, which I am trying out taking data and loading its filters on a MiniDsp SHD, as usual. There is a quite funny filter behaviour with respect to the old 3.10.10. My room has a very strong floor-to-ceiling resonance at 32Hz, and while the 3.10.10 version is very efficient in killing it, the new 3.11.0 designed filters are much more blurred and suppress it much less selectively. Also, the new 3.11.0 refuses to boost my speakers to 20Hz and stops the bass boosting at 26-28Hz and level out the 10kHz+ frequencies 1dB higher than my previous results.

These are the Dirac Live filter frequency response (left channel) obtained with the same data and same target curve for versions 3.10.10 (blue curve) and 3.11.0 (red curve)

Dirac 3.10.10vs3.11.0.jpg


So I thought, maybe the new version must have fresh data taken instead of relying on the "old" data, so I took new measurements, but actually the outcome is very similar. The plots cannot be directly compared to the one above because in the meanwhile I have changed speakers position, I hope for the better. I also changed microphone, from an Umik-1 to an Umik-2. Check the left and right channel plots with data taken and analysed by 3.10.10 vs data taken and analysed with 3.11.0

2024-12-20-L.jpg


2024-12-20-R.jpg


There's a very good agreement but I don't like the 32Hz resonance not very well suppressed, I don't like the lack of support down to 20Hz and I don't understand that 1dB difference above 10kHz. For the moment I still prefer the 3.10.10 corrections

Has anybody of you done any test with version 3.11.0? Did you compare it to 3.10.10? What's your experience and feelings? Do you like it?
 
First of all Merry Christmas to everybody,

Since November there is a new version out of Dirac Live, which I am trying out taking data and loading its filters on a MiniDsp SHD, as usual. There is a quite funny filter behaviour with respect to the old 3.10.10. My room has a very strong floor-to-ceiling resonance at 32Hz, and while the 3.10.10 version is very efficient in killing it, the new 3.11.0 designed filters are much more blurred and suppress it much less selectively. Also, the new 3.11.0 refuses to boost my speakers to 20Hz and stops the bass boosting at 26-28Hz and level out the 10kHz+ frequencies 1dB higher than my previous results.

These are the Dirac Live filter frequency response (left channel) obtained with the same data and same target curve for versions 3.10.10 (blue curve) and 3.11.0 (red curve)

View attachment 416401

So I thought, maybe the new version must have fresh data taken instead of relying on the "old" data, so I took new measurements, but actually the outcome is very similar. The plots cannot be directly compared to the one above because in the meanwhile I have changed speakers position, I hope for the better. I also changed microphone, from an Umik-1 to an Umik-2. Check the left and right channel plots with data taken and analysed by 3.10.10 vs data taken and analysed with 3.11.0

View attachment 416402

View attachment 416403

There's a very good agreement but I don't like the 32Hz resonance not very well suppressed, I don't like the lack of support down to 20Hz and I don't understand that 1dB difference above 10kHz. For the moment I still prefer the 3.10.10 corrections

Has anybody of you done any test with version 3.11.0? Did you compare it to 3.10.10? What's your experience and feelings? Do you like it?
Can you please attach the mdat file?
 
The speaker position changed and using a different model of microphone… that seems as likely to cause the difference as the software revision.
 
I don't know how you can achieve such a linear frequency response above 10kHz!?
Please show us your REW settings?
Hello, the plots I am posting are not frequency responses measured in room, the speakers are not involved. My plots are the frequency response of the SHD filter calculated by Dirac Live. These plots are the correction applied to the signal before it is sent to the amp and speakers.
 
The speaker position changed and using a different model of microphone… that seems as likely to cause the difference as the software revision.
Thanks for your interest. From the first plot to the other two you are right, there are two essential changes. But within the second plot (left channel) and within the third plot (right channel) the two filters differ essentially just because of the different Dirac Live version.
 
These plots are the correction applied to the signal before it is sent to the amp and speakers.
OK and why do you see a linear response above 10kHz? Did you set the right curtain to 10kHz?
 
You are welcome. I cannot attach it to this message but I can share it with Dropbox. You can download it at this address: https://www.dropbox.com/scl/fi/66n1...ey=le8f4yttf8mnjuj5kbfw06xa6&st=up08k9cu&dl=0
Grazie!

I thought that these were actual measurements but anyway
I would not be worried about that notch at 32Hz, since it is only a notch - if you change the smoothing to 1/12 oct. it will be gone

No smoothing
1735147315626.png


1/12
1735147335536.png


Hence I don't think it is actually audible
 
Grazie!

I thought that these were actual measurements but anyway
I would not be worried about that notch at 32Hz, since it is only a notch - if you change the smoothing to 1/12 oct. it will be gone

No smoothing
View attachment 416423

1/12
View attachment 416424

Hence I don't think it is actually audible
Thanks a lot, maybe I better also post the in-room frequency rensponse before correction and after the 3.10.10 and the 3.11.0 correction
 
OK, the in-room response is within 1dB one to each other on most of the spectrum, be it 3.10.10 or 3.11.0. Here's 2 plots, with 1/48 oct smearing and 1/12 oct smearing, moving microphone method and periodic pink noise.

2025-12-25 Misura Ambiente.jpg


2025-12-25 Misura Ambiente (con smearing).jpg
 
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