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
Register FAQ Today's Posts Search

Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 05-15-2015, 07:34 AM
Crookman Crookman is offline
Member
 
Join Date: Feb 2009
Posts: 11
Default Discovery Channel and short term loudness on Documentaries

Hello all, there have been a couple of posts on this but not that answers my particular question.
I was wondering whether anyone has had experience with how stringent DCI are with short term loudness perimeters. I get they will let lower levels go on quieter sections where dialogue is scarce or non existent but I'm finding it tricky and rather frustrating to comply with the upper limit of -20LUFS on sections that involve shouting or sustained higher energy scenes. strictly complying to the spec really flattens the mix.
Is this everyones view or am I missing something?

Many thanks
Steve
Reply With Quote
  #2  
Old 05-15-2015, 10:42 AM
smurfyou smurfyou is offline
Member
 
Join Date: Oct 2006
Location: Charlotte, NC
Posts: 1,733
Default

You're not missing anything, it is a stupid spec that ignores the whole premise of loudness standards. Just like they got it all wrong with Dialnorm before this.

I've definitely gone over. (For one of their other networks, not Discovery Channel - I have no idea if they have more than one QC dept).
__________________
~Will
Reply With Quote
  #3  
Old 05-15-2015, 02:43 PM
Brandonx1 Brandonx1 is offline
Member
 
Join Date: Oct 2003
Location: Los Angeles
Posts: 2,974
Default

Quote:
Originally Posted by smurfyou View Post
You're not missing anything, it is a stupid spec that ignores the whole premise of loudness standard.
No not Discovery!?
__________________
Brandon Howlett
Vibe Audio Post, Inc.
Re-recording Mixer
Custom Build CPU, HDX 1, Omni, 192 I/O Digital
S6 M10 24 fader
Satellite Mac Pro, HDNative, 192 I/0
Black Magic HD Extreme
Reply With Quote
  #4  
Old 05-16-2015, 11:18 AM
V5V's Avatar
V5V V5V is offline
Member
 
Join Date: Jan 2003
Location: Vancouver
Posts: 543
Default

Just let the mix be a little "flatter." Your audience will thank you.

I don't understand why anyone would WANT a lot of dynamic range. It's TV, not a feature. Mumbly quiet bits and bursts of loud shouting send the viewer diving for the volume control, either uttering the dreaded "Whadhesay?" complaint or cursing the kid-waking, neighbour-annoying, senses-shocking volume.

There may also actually be valid technical reasons for the hard cap on level, and exceeding it might just make your louder bit duck or break up, both of which are going to have a much more deleterious affect on your product than just keeping the maximum level in check in the first place.
__________________
Lorin Schultz
V5V Audio
Vancouver, BC Canada
Reply With Quote
  #5  
Old 05-16-2015, 02:37 PM
Crookman Crookman is offline
Member
 
Join Date: Feb 2009
Posts: 11
Default

Quote:
Originally Posted by V5V View Post
Just let the mix be a little "flatter." Your audience will thank you.

I don't understand why anyone would WANT a lot of dynamic range. It's TV, not a feature. Mumbly quiet bits and bursts of loud shouting send the viewer diving for the volume control, either uttering the dreaded "Whadhesay?" complaint or cursing the kid-waking, neighbour-annoying, senses-shocking volume.

There may also actually be valid technical reasons for the hard cap on level, and exceeding it might just make your louder bit duck or break up, both of which are going to have a much more deleterious affect on your product than just keeping the maximum level in check in the first place.
And here lies my problem. The true peak cap of -2dBFS with a stipulation that only momentary excursions above -6dBFS is totally understandable to prevent clipping. I get that. As I also understand the need to limit the dynamic range of a program destined tor tv. But for me an absolute hard line cut off for short term loudness of 4LU above -24 is too prescriptive and has nothing to do with frying components in the transmission chain.
Of course we don't want the viewers reaching for the remote but for me, if you have to hit an integrated loudness of -24, a three second short term loudness window at -20 does not allow for those moments where a little extra is needed to make the scene work. Just as Discovery have the lower short term limit at -28 but the unders are viewed in context, I think the same same should be done for the upper level. If an absolute upper short term range needed to be set, -17LUFS seems a more reasonable limit for louder sections.
Most other broadcasters I work for are coping fine without such hard line perameters and are delivering content to other territories. To me it seems Discovery have moved 2 steps forward only to shoot itself in the foot.
That said, I'm quite happy to be put on the Discovery straight and narrow - it's just that no-one has given me a logical and well reasoned argument.
Reply With Quote
  #6  
Old 05-16-2015, 08:54 PM
lucienpalmer lucienpalmer is offline
Member
 
Join Date: Jan 2014
Location: Los Angeles
Posts: 761
Default

Very odd. I hadn't heard of anyone specify a loudness level peak. It does contradict the point of having a system based on the average loudness over the duration of the program.

Now I'm curious to pull up an old show and see where my highest loudness peaks are. I'm sure they frequently go above -24.
Reply With Quote
  #7  
Old 05-16-2015, 09:23 PM
lucienpalmer lucienpalmer is offline
Member
 
Join Date: Jan 2014
Location: Los Angeles
Posts: 761
Default

Oh yeah. I just checked the last show I did for A&E, and the momentary max LUFS hits -20.7, and this is not at all what I would consider a very dynamic show.
Reply With Quote
  #8  
Old 05-16-2015, 10:16 PM
Brandonx1 Brandonx1 is offline
Member
 
Join Date: Oct 2003
Location: Los Angeles
Posts: 2,974
Default

Quote:
Originally Posted by V5V View Post
Just let the mix be a little "flatter." Your audience will thank you.

I don't understand why anyone would WANT a lot of dynamic range. It's TV, not a feature. Mumbly quiet bits and bursts of loud shouting send the viewer diving for the volume control, either uttering the dreaded "Whadhesay?" complaint or cursing the kid-waking, neighbour-annoying, senses-shocking volume.

There may also actually be valid technical reasons for the hard cap on level, and exceeding it might just make your louder bit duck or break up, both of which are going to have a much more deleterious affect on your product than just keeping the maximum level in check in the first place.
For me, flat mixes with no dynamics sound bad on any medium. The entire reason for 1770 spec is so we can have dynamics.
__________________
Brandon Howlett
Vibe Audio Post, Inc.
Re-recording Mixer
Custom Build CPU, HDX 1, Omni, 192 I/O Digital
S6 M10 24 fader
Satellite Mac Pro, HDNative, 192 I/0
Black Magic HD Extreme
Reply With Quote
  #9  
Old 05-16-2015, 10:39 PM
lucienpalmer lucienpalmer is offline
Member
 
Join Date: Jan 2014
Location: Los Angeles
Posts: 761
Default

Quote:
Originally Posted by Brandonx1 View Post
For me, flat mixes with no dynamics sound bad on any medium. The entire reason for 1770 spec is so we can have dynamics.
Exactly. And it does allow for decent dynamics that still work well for playback in a television. Television isn't radio. No need to squash the mix.

The fact is, you'll never stop people from grabbing the remote and changing the volume up and down. Every TV is different, every room is different, and everyone's ears are different. I can watch TV and think it sounds perfectly fine, and my wife is constantly saying, "what did they say?". There is no silver bullet for the perfect spec, so we might as well just mix it so it sounds good and maintain a consistent loudness to anchor it.
Reply With Quote
  #10  
Old 05-17-2015, 12:48 AM
8dB.co.uk 8dB.co.uk is offline
Member
 
Join Date: Jan 2007
Location: London UK
Posts: 1,023
Default

Discovery used to use LEQ(a) and Dial Norm, so this is a definite advance.
__________________
Pro Tools Utimate 2018.7, on -

i7 5820k 6 x 4GHz (12 threads), 16GB DDR4, Win 10 Pro, BM Mini Monitor PCIe, GTX 660Ti 2GB;

Dell Laptop, i7 4x3.6GHz (8 threads ), 16GB DDR4, Win 10 Pro, GTX1060MaxQ 6GB;

"Plan B" - i7 6700k, 4 x 3.4GHz, 16GB DDR4, Sierra, AJA Kona LHi, GTX 1050Ti 4GB.

RME FireFace802 + ARC, RME Babyface

Avid D-Command, Artist Control, V-Control, Korg MicroKontrol

7.1.2 Presonus Monitors
Reply With Quote
Reply


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
a couple of short term freebees Craig F General Discussion 5 03-16-2015 04:03 AM
best loudness range for short film. MixerGuy Post - Surround - Video 9 05-02-2014 11:36 AM
Help With Discovery Channel Specs Please ripekeai Post - Surround - Video 26 10-20-2011 06:58 AM
Discovery Channel and stereo johnnyreno Post - Surround - Video 16 02-04-2007 09:53 PM
Discovery Channel Specs All Ears Post - Surround - Video 31 12-27-2005 07:56 PM


All times are GMT -7. The time now is 07:09 AM.


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