Avid Pro Audio Community

Avid Pro Audio Community

How to Join & Post  •  Community Terms of Use  •  Help Us Help You

Knowledge Base Search  •  Community Search  •  Learn & Support


Avid Home Page

Go Back   Avid Pro Audio Community > Pro Tools Post Production > Post - Surround - Video

Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 03-27-2014, 05:17 PM
mikevarela mikevarela is offline
Member
 
Join Date: Feb 2008
Location: Los Angeles
Posts: 571
Default Pro Limiter Analyzer vs. Dolby Media Meter

Been running some tests on True Peak and LUFS reading between the two (both using bs 1770.3)

I keep getting a higher reading for LUFS with DMM - usually by about .3 DB. I've also got a few True Peak mismatches, 1 of them by a full DB

On the plus side the time for measurement is about the same but naggingly, the DDM creates new files each time and also consolidates the audio.

Any help in why the mismatch?


Pro Tools 10.3.8 HD - Mac Mountain Lion
__________________
NuanceTone.com
Reply With Quote
  #2  
Old 03-27-2014, 07:29 PM
Postman Postman is offline
Member
 
Join Date: Dec 1999
Location: where land meets sky
Posts: 2,375
Default Re: Pro Limiter Analyzer vs. Dolby Media Meter

Have you run EBU test material through each? They may give a clue which is closer to a standard.
Reply With Quote
  #3  
Old 03-28-2014, 10:51 AM
mikevarela mikevarela is offline
Member
 
Join Date: Feb 2008
Location: Los Angeles
Posts: 571
Default Re: Pro Limiter Analyzer vs. Dolby Media Meter

No I hadn't, that's a great idea. Thanks

However, this is R128 material (test material) and the Pro Limiter IS running the BS1770.3 spec, it's not specifically R128 compliant, or at least it's not an option for measuring. Ideally it would have a dropdown for Calm and R128
__________________
NuanceTone.com
Reply With Quote
  #4  
Old 03-28-2014, 10:58 AM
Doug the Brit Doug the Brit is offline
Member
 
Join Date: Mar 2002
Location: California
Posts: 64
Default Re: Pro Limiter Analyzer vs. Dolby Media Meter

Earlier versions of DMM had a huge error when measuring 7.1 files...

They've attempted to correct this with the latest version.

There's some kind of fudging going on under the hood for 7.1, I'm told 5.1 "should be accurate".

-Doug
Reply With Quote
  #5  
Old 03-29-2014, 08:14 AM
MIKEROPHONICS's Avatar
MIKEROPHONICS MIKEROPHONICS is offline
Member
 
Join Date: Sep 2008
Location: CRANLEIGH (gateway to the Surrey Hiils), UK
Posts: 2,094
Default Pro Limiter Analyzer vs. Dolby Media Meter

Buy Nugen - the daddy of loudness meters. Totally reliable.
I don't trust Dolby and their Meters. CPU resource hog too.
__________________
cheers

Mike Aiton BSc (hons)
Audio Consultant, Dubbing Mixer/Sound Designer & Journalist

BAFTA member
IPS member

----------------------------------------------------------------------
www.mikerophonics.com
Reply With Quote
  #6  
Old 03-29-2014, 10:39 AM
tom_lowe tom_lowe is offline
Member
 
Join Date: Sep 2006
Location: London, UK
Posts: 1,083
Default Re: Pro Limiter Analyzer vs. Dolby Media Meter

Quote:
Originally Posted by mikevarela View Post
No I hadn't, that's a great idea. Thanks

However, this is R128 material (test material) and the Pro Limiter IS running the BS1770.3 spec, it's not specifically R128 compliant, or at least it's not an option for measuring. Ideally it would have a dropdown for Calm and R128
R.128 specifies levels to be used, not how the meter works. It's based on BS1770-2 and 3. It also adds the G10 gate which was implemented in BS1770-3. EBU R.128 is a spec, BS1770-3 is the algorithm for measuring loudness, not what the target level is.

So any meter that is BS1770-3 compliant is fine for the most recent R.128 revision.
Reply With Quote
  #7  
Old 03-29-2014, 12:40 PM
Postman Postman is offline
Member
 
Join Date: Dec 1999
Location: where land meets sky
Posts: 2,375
Default Re: Pro Limiter Analyzer vs. Dolby Media Meter

Quote:
I've also got a few True Peak mismatches, 1 of them by a full DB
Chances are that the lower of the two peak readings is less accurate.
Reply With Quote
  #8  
Old 03-31-2014, 02:27 PM
Felix Rost Felix Rost is offline
Member
 
Join Date: Feb 2006
Location: Berlin, Germany
Posts: 600
Default Re: Pro Limiter Analyzer vs. Dolby Media Meter

Quote:
Originally Posted by mikevarela View Post
On the plus side the time for measurement is about the same but naggingly, the DDM creates new files each time and also consolidates the audio.

Semi-OT:
For their Audiosuite-Plugin, DMM and a few other analyzers use render mode instead of analyze, thus creating new files. A serious programming/design flaw !
__________________
http://felixrost.de
Reply With Quote
  #9  
Old 04-01-2014, 06:21 AM
TVPostSound's Avatar
TVPostSound TVPostSound is offline
Member
 
Join Date: Aug 2002
Posts: 3,342
Default Re: Pro Limiter Analyzer vs. Dolby Media Meter

Quote:
Originally Posted by Felix Rost View Post
Semi-OT:
For their Audiosuite-Plugin, DMM and a few other analyzers use render mode instead of analyze, thus creating new files. A serious programming/design flaw !
Just undo after analyzing.

Or use the stand alone application.
__________________
IMDB
Reply With Quote
  #10  
Old 04-02-2014, 04:21 AM
MIKEROPHONICS's Avatar
MIKEROPHONICS MIKEROPHONICS is offline
Member
 
Join Date: Sep 2008
Location: CRANLEIGH (gateway to the Surrey Hiils), UK
Posts: 2,094
Default Re: Pro Limiter Analyzer vs. Dolby Media Meter

Dolby have very kindly contacted me and offered to let me try their newest meter - rather than my let my experience rest with the original Media Meter.

Thank you Dolby. That is customer centric!
__________________
cheers

Mike Aiton BSc (hons)
Audio Consultant, Dubbing Mixer/Sound Designer & Journalist

BAFTA member
IPS member

----------------------------------------------------------------------
www.mikerophonics.com
Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Dolby Media Meter and Leq(A) Digibill Post - Surround - Video 12 04-09-2010 08:39 PM
Dolby Media Meter KK Proffitt Post - Surround - Video 15 08-25-2009 05:17 AM
Dolby Media Meter MIKEROPHONICS Post - Surround - Video 39 05-26-2009 07:55 PM
Dolby E and Dolby Media Meter Newbie Questions AudioPostChris Post - Surround - Video 4 02-08-2009 03:53 PM
Dolby Media Meter or TC LM5 SFXPost Post - Surround - Video 7 08-18-2008 11:18 PM


All times are GMT -7. The time now is 12:43 AM.


Powered by: vBulletin, Copyright ©2000 - 2008, Jelsoft Enterprises Limited. Forum Hosted By: URLJet.com