Question about Dolby. - AVS | Home Theater Discussions And Reviews
Baselworld is only a few weeks away. Getting the latest news is easy, Click Here for info on how to join the Watchuseek.com newsletter list. Follow our team for updates featuring event coverage, new product unveilings, watch industry news & more!


Forum Jump: 
 
Thread Tools
Old 03-16-2013, 12:07 AM - Thread Starter
Senior Member
 
coresare's Avatar
 
Join Date: Feb 2013
Posts: 298
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 20
I was playing Batman The Dark Knight Rises Blu-Ray and had Dolby turned on, on my Anthem MRX AVR.

During the scene with The Bat flying out of the side of the buildings when the deep bass buffeting sound from the aircraft was playing I noticed the sound sounded...well...pretty bad. The general volume seemed turned way down, and the speech was hard to hear (currently just using a 2.1 system).

I figured it's probably Dolby trying to narrow the dynamic range causing this effect so I turned Dolby off and the problem went away.

Is this typical?
coresare is offline  
Sponsored Links
Advertisement
 
Old 03-16-2013, 07:56 AM
AVS Special Member
 
BIslander's Avatar
 
Join Date: Jul 2005
Posts: 8,696
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 144 Post(s)
Liked: 151
Dolby is not something you can turn on and off. It's a data compression codec. If the source is encoded using Dolby, you must use a Dolby decoder in order to get any sound. So, what do you mean when you say you turned Dolby off?
BIslander is online now  
Old 03-16-2013, 08:51 AM - Thread Starter
Senior Member
 
coresare's Avatar
 
Join Date: Feb 2013
Posts: 298
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 20
There are settings on the receiver to turn Dolby volume on or off and various Dolby settings when on.
coresare is offline  
Old 03-16-2013, 09:11 AM
AVS Special Member
 
holt7153's Avatar
 
Join Date: Sep 2007
Location: City of Angels
Posts: 3,325
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 60 Post(s)
Liked: 146
Dolby Volume is a volume leveling feature, so it's no surprise that a dynamic movie will sound better with it turned OFF.

**************************
If 4 out of 5 people suffer from diarrhea, does that mean that one enjoys it?
holt7153 is online now  
Old 03-16-2013, 09:15 AM
AVS Special Member
 
BIslander's Avatar
 
Join Date: Jul 2005
Posts: 8,696
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 144 Post(s)
Liked: 151
Ah, Dolby Volume. That's a feature designed to even out program levels, an improved version of Dynamic Range Control and dialog normalization. But, it doesn't always work in ways that are pleasing to everyone in every possible configuration of playback equipment and room acoustics.
BIslander is online now  
Old 03-16-2013, 11:30 AM - Thread Starter
Senior Member
 
coresare's Avatar
 
Join Date: Feb 2013
Posts: 298
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 20
Ok looks like that's going to be turned off permanently. Can't wait to get a center channel.
coresare is offline  
Old 03-16-2013, 09:29 PM
AVS Special Member
 
Kilian.ca's Avatar
 
Join Date: Mar 2007
Location: Ex-50Hz, now 60Hz
Posts: 1,901
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 36
I have two related questions about DRC in Dolby encoded audio and Dolby Volme in AVRs.

What's the difference?

If you engage Dolby Volume (which i understand works for all signal formats, not just Dolby tracks) on a Dolby track (TrueHD or DD), does it just use the DRC in the track, or does it ignore it and applies Dolby Volume instead?

Audiosceptics accept audio trials using 25 people. A recent Oxford study with over 353,000 patient records from 639 separate clinical trials shows for every 1,000 people taking diclofenac or ibuprofen there would be 3 additional heart attacks, 4 more cases of heart failure and 1 death every year.

Kilian.ca is offline  
Old 03-16-2013, 11:14 PM
AVS Special Member
 
BIslander's Avatar
 
Join Date: Jul 2005
Posts: 8,696
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 144 Post(s)
Liked: 151
Here's a thread with a bit of discussion about Dolby Volume and DRC, including comments from Roger Dressler, the former manager of product development at Dolby. It's short, but may be a start.

http://www.avsforum.com/t/1338213/is-dolby-volume-really-the-best-solution
BIslander is online now  
Old 03-17-2013, 05:23 AM
AVS Special Member
 
rnatalli's Avatar
 
Join Date: Mar 2008
Posts: 2,860
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 52 Post(s)
Liked: 106
Run DV with the Modeler only if your AVR allows. Sometimes the setting is labeled "low" or "modeler only"
rnatalli is offline  
Old 03-18-2013, 01:24 AM
AVS Special Member
 
Kilian.ca's Avatar
 
Join Date: Mar 2007
Location: Ex-50Hz, now 60Hz
Posts: 1,901
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 36
Thanks BI, interesting comment in the last post of the link... smile.gif

Audiosceptics accept audio trials using 25 people. A recent Oxford study with over 353,000 patient records from 639 separate clinical trials shows for every 1,000 people taking diclofenac or ibuprofen there would be 3 additional heart attacks, 4 more cases of heart failure and 1 death every year.

Kilian.ca is offline  
 
Thread Tools


Forum Jump: 

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 Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off