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Discussion Starter #1 (Edited)
People asked for it, here it is, a dedicated thread all things Dirac Live (DL). This post will be updated as we go along...

Manufacturer website:
https://live.dirac.com

Download for Mac, PC, iOS and Android:
https://live.dirac.com/download/

Quickstart guide – AVR/pre-pro:
https://live.dirac.com/content/uploads/2019/05/dirac-live-quick-start-print-version.pdf

Quickstart guide – Dirac Live Processor for Mac/PC:
https://live.dirac.com/processor-step-by-step/

Bug reporting:
http://helpdesk.dirac.se/

History, target curves, bugs:
https://mehlau.net/audio/dirac-live-2/

Configure microphone and setting speaker levels:
https://mehlau.net/audio/dirac-live-2-mic-speaker-levels/

How to set crossovers (without "Bass Control"):
https://mehlau.net/audio/dirac-live-2-avr-crossover/

Dirac Live "Bass Control" add-on:
http://diracdocs.com/Bass Control in Live.pdf

Introduction to digital room equalization
http://diracdocs.com/on_room_correction.pdf

Deep dive into room correction with Dirac Live:
 

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Subscribed - Thanks @markus767!

One question I have about Dirac Live 2 is in regard to channel trims:
  • Dirac 1 didn't adjust trims - that was something I'd manually do after the calibration
  • Dirac 2 does pay attention the the trims.
  • I've found that my rear channels (10' away from the microphone) are dragging down the "set" trim level for all the other speakers. For example, my FL speaker is -8db, and my RL speaker (the quiet one) is set to 0db.
  • I'd much prefer that Dirac 2 set the loudest speaker to 0db and adjust relative to that, not to the quietest speaker.
  • Is there any way to "normalize" the trims, or to tell Dirac 2 to NOT set the trims?
Processor - HTP-1
Amps - Parasound A21, Emotiva XPA-5, Gen 2
Speakers - Paradigm Studio series
Setup: 7.1.0
 

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Hint for Dirac 1 and Dirac 2 running on a PC:
I found that when running on a Windows 10 PC, you'll need to run Dirac under a user account with Administrator level rights.

In my case, I'll login using the Admin account, run Dirac, upload the filters to my device, and then log out (I never typically use the Admin user unless I really need to).
 

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Subscribed - Thanks @markus767 !

One question I have about Dirac Live 2 is in regard to channel trims:
  • Dirac 1 didn't adjust trims - that was something I'd manually do after the calibration
  • Dirac 2 does pay attention the the trims.
  • I've found that my rear channels (10' away from the microphone) are dragging down the "set" trim level for all the other speakers. For example, my FL speaker is -8db, and my RL speaker (the quiet one) is set to 0db.
  • I'd much prefer that Dirac 2 set the loudest speaker to 0db and adjust relative to that, not to the quietest speaker.
  • Is there any way to "normalize" the trims, or to tell Dirac 2 to NOT set the trims?
Processor - HTP-1
Amps - Parasound A21, Emotiva XPA-5, Gen 2
Speakers - Paradigm Studio series
Setup: 7.1.0

I would ask why it would matter if the loudest speaker is set to 0dB on the trim and all others are boosted as needed or if the quietest is set to 0dB and all others are cut as needed?
 

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I just ordered a Lexicon MC-10 which runs Dirac Live. What is the optional mic brand and part number that is recommended to use and where do you purchase them ? Thanks
 

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I would ask why it would matter if the loudest speaker is set to 0dB on the trim and all others are boosted as needed or if the quietest is set to 0dB and all others are cut as needed?
Because that is the way Dirac works. Are you questioning why Dirac is designed that way?
 

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Discussion Starter #7 (Edited)
I just ordered a Lexicon MC-10 which runs Dirac Live. What is the optional mic brand and part number that is recommended to use and where do you purchase them ? Thanks
As long as you're using a calibrated, omnidirectional mic and it is recognized by your computer (or AVR/AVP) the brand doesn't matter much.
 
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Discussion Starter #8
Subscribed - Thanks @markus767!

One question I have about Dirac Live 2 is in regard to channel trims:
  • Dirac 1 didn't adjust trims - that was something I'd manually do after the calibration
  • Dirac 2 does pay attention the the trims.
  • I've found that my rear channels (10' away from the microphone) are dragging down the "set" trim level for all the other speakers. For example, my FL speaker is -8db, and my RL speaker (the quiet one) is set to 0db.
  • I'd much prefer that Dirac 2 set the loudest speaker to 0db and adjust relative to that, not to the quietest speaker.
  • Is there any way to "normalize" the trims, or to tell Dirac 2 to NOT set the trims?
Processor - HTP-1
Amps - Parasound A21, Emotiva XPA-5, Gen 2
Speakers - Paradigm Studio series
Setup: 7.1.0
How speaker trims are set depends on the available internal headroom. Manufacturers usually don't provide good control and monitoring for these parameters. The miniDSP DDRC-88BM being the exception.
 

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Many use this microphone:

https://www.minidsp.com/products/acoustic-measurement/umik-1

I recall seeing a comparison which showed calibrations performed with the umik were more accurate than those done with the cheap microphones manufacturers include with processors and receivers.


I just ordered a Lexicon MC-10 which runs Dirac Live. What is the optional mic brand and part number that is recommended to use and where do you purchase them ? Thanks
 
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@markus767, you mention "... Some features have even been crippled (e.g. test signal/mic gain adjustment) ...", and later you mention "Version 2.5.2 has been released on 08.04.2020 with usability improvements and bug fixes but generally all of the above still applies".

Following your posts on the NAD T758 thread, i was under the impression you were hopping that version 2.5 would address the signal/gain issue.
Could you please clarify?

Thank you very much for having the time to create this thread!
 

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Subscribed - Thanks @markus767!

One question I have about Dirac Live 2 is in regard to channel trims:
[*]Dirac 1 didn't adjust trims - that was something I'd manually do after the calibration
[*]Dirac 2 does pay attention the the trims.
That may depend on how you used DL. Dirac 1 did do trims in the PC implementation.
 

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Maybe someone can help me here. I have Dirac on a Datasat Ls10 and I can’t get my speakers to make noise to calibrate. It finds the processor, recognizes the mic and when it come to playing the noise back I get nothing, zero sound
 

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I've decided to try a Dirac cal only correcting up to my rooms Schroeder frequency but was wondering if a good guestimate of where that would be can be gleaned from the below Dirac results for my Front LR and a pair of my Atmos speakers?

My guess is maybe around 500Hz?

500 Hz is a good estimate. Or you can use this equation to determine the actual Schroeder frequency for your listening room: http://www.acoustic.ua/forms/room-modes-eng.html


Jeff
 

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500 Hz is a good estimate. Or you can use this equation to determine the actual Schroeder frequency for your listening room: http://www.acoustic.ua/forms/room-modes-eng.html

Jeff
Thanks. Just tried the calculator and it says the Schroeder frequency should be around 170Hz based on 22'x14'x8' and default temp and reverb time.

Visually, when looking at frequency response of speakers in the room, is it possible to roughly guess the frequency? Reading up it seems like the visual indicator is when the response goes from large dips/peaks and "narrows" more?

Better yet, is there an easy way to use REW and find out? I'm no REW expert but figure if there is an easy way to find out it's worth a shot.
 

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Discussion Starter #19
@markus767, you mention "... Some features have even been crippled (e.g. test signal/mic gain adjustment) ...", and later you mention "Version 2.5.2 has been released on 08.04.2020 with usability improvements and bug fixes but generally all of the above still applies".

Following your posts on the NAD T758 thread, i was under the impression you were hopping that version 2.5 would address the signal/gain issue.
Could you please clarify?

Thank you very much for having the time to create this thread!
The gain matching algorithm issue went much deeper and isn't related to settings in the "Volume Calibration" tab. It has been fixed beginning version 2.5. So finally after 16 months (or 2.5 years, depending on when you start counting) we finally have a Dirac Live version that provides more or less the same functionality as version 1... Let's hope the upcoming "Bass Control" feature was worth the wait.
 

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Discussion Starter #20
I've decided to try a Dirac cal only correcting up to my rooms Schroeder frequency but was wondering if a good guestimate of where that would be can be gleaned from the below Dirac results for my Front LR and a pair of my Atmos speakers?

My guess is maybe around 500Hz?
It can be eyeballed looking at multiple spatially distributed measurements. Check the "Measured/Corrected Spread" box.

P.S. The "Measured Spread" checkbox is currently missing due to a bug.
 
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