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This topic comprises 2 pages: 1 2
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Author
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Topic: DTS trailers level
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Antonio Marcheselli
Phenomenal Film Handler
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Posts: 1260
From: Florence, Italy
Registered: Mar 2000
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posted 03-01-2002 06:55 PM
Hi everyone.Just a question: are the DTS trailers recorded on DTS disk normalized to the same film's level? I mean: we noted that not all movies has the same sound level. We usually keep volume very loud, but sometimes we have to project movies at 5.5. So, when a movie projected at 5.5 is in DTS, is the DTS trailer recorded on the same disk at reference level at 5.5? Or should I have to play it at 7.0? I'm not sure I was clear... ![](http://www.film-tech.com/ubb/smile.gif) Bye Antonio
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Manny Knowles
"What are these things and WHY are they BLUE???"
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Posts: 4247
From: Bloomington, IN, USA
Registered: Feb 2002
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posted 03-01-2002 11:39 PM
If your DTS output levels are properly set (from the DTS unit into your analog processor) then you should not have to adjust the audio playback level.As for movies having different loudness...this may well be, but that should not affect your playback level. Some movies are created with loud-sounding soundtracks while others are designed to be quieter. Certainly, you will find that some movies/trailers are simply too loud and I wouldn't blame you for lowering the volume a half-point to protect equipment or to satisfy patrons (and not just one patron, mind you). But, in general, you should try to avoid having to changing your fader setting for each show (or for previews). If you find you are changing levels ALL THE TIME, then it is a sign that something has gone wrong. Possibly: 1) your alignment is at fault 2) operator error - use of personal taste 3) other - can't think of what it could be but just in case... ------------------ And, hey! Let's be careful out there. ~Manny.
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Karen Hultgren
Master Film Handler
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Posts: 492
From: Agoura Hills, CA, USA
Registered: Mar 2000
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posted 03-04-2002 11:51 AM
When setting sound pressure levels in a theater, the cinema processor's volume control should be at '7' and then the SPL for screen channels set to 85dB and the surrounds for 82dB (most of the time, depending on the CP).The overall loudness of a film - feature or trailer is dependant on the mix made by the film maker. DTS only copies what we are given. If a film or trailer is mixed loud, then it will playback loud. Many times, for whatever reason, trailers are mixed louder than features. That is one of the reasons why we but the "trim" feature in the DTS-6AD cinema processor. On a digital playback only unit, such as a DTS-6D, there is no trim feature. So, when running shows with this unit, you'll have to find a setting on the CP master level pot that you can live with. Karen at DTS
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Manny Knowles
"What are these things and WHY are they BLUE???"
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Posts: 4247
From: Bloomington, IN, USA
Registered: Feb 2002
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posted 03-04-2002 09:05 PM
DTS trailers (and, in fact, every trailer) should be regarded as a separate movie.The soundtrack of a trailer - any trailer - is mixed separately from any other movie, or any other trailer. The DTS "Flying Disc" trailer is quite loud because it is a demonstration of the digital system, which (unfortunately) most consumers equate with loudness. However, in a properly aligned theatre, you should not notice a great disparity in SPL between the digital track and the analog track (of the same movie or trailer). With the digital track playing, the soundfield will seem more alive. The sound will be clearer, the room will seem more spacious, and the placement of sound effects (the flying disc) around the room will be more precise. It will sound better, but it shouldn't seem louder. Well...actually, it might, but you shouldn't need to adjust your fader setting for that trailer. In short, if you are noticing major volume shifts as you switch from digital to analog (especially with the DTS trailer) then you should have the levels on that system checked out. Some thoughts to ponder: 1) I don't know if you have this one, but try using the DTS "Sonic Landscape" Logo Trailer if you want a nice, quiet trailer for more "intimate" movies. 2) If your system is indeed properly aligned and you are perceiving extreme loudness, then you might actually be responding to distortion. What loudspeakers are you using? What condition are they in? ------------------ And, hey! Let's be careful out there. ~Manny.
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Antonio Marcheselli
Phenomenal Film Handler
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Posts: 1260
From: Florence, Italy
Registered: Mar 2000
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posted 03-05-2002 05:26 AM
Manny,Your suggestions are right and useful but I'm not having problems with DTS levels or loudness!!! Analog/Digital levels are right, DTS/Dolby Digital levels are rights and macht the analog ones, we NEVER set a lower volume for the DTS/THX trailers, we know that tey are loud for a choise. I don't like very much the "sonic landscapes" because is not very loud... ![](http://www.film-tech.com/ubb/smile.gif) What I say is that, *sometimes*, we have a movie that has to be showed at 5, or 5.5. JUST SOMETIMES: usually we project our movie at 7.0 (or 6.5, depending of the audience, of the type of movie, of operator's ears!). Surely they are bad-recorded movie (perhaps the italian mixers are not so good like USA's ones!). In that case both Movie AND THX/DTS trailers are shown at 5.5/5.0. I wonder if in that case (when a movie is recorded too loud) also DTS/THX trailers are recorded at the same level or not. With Dolby Digital sound level is on the print so in that case, to have the DOlby Trailers sounds well, I should project the Dolby Trailers at 7.0 and then set the feature at 5.0/5.5 Is it the same with DTS/THX trailers? Bye Antonio
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John Hawkinson
Film God
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Posts: 2273
From: Cambridge, MA, USA
Registered: Feb 2002
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posted 03-05-2002 08:20 AM
Yes. No matter what format your trailers are (analog, DTS, SDDS, Dolby Digital, or tomorrow's new format between the sprockets opposite the sound), trailers are completely independant of the feature. If you have to lower the volume for your feature because the feature is too loud, then you do not have to lower the volume for the trailers. Now, if the trailers are too loud (a common problem because they are designed to be too loud), you might want to lower the volume for them. But that's completely unrelated.This assumes your theatre is correctly aligned. If your alignment is wrong, one format might sound louder than another. But still, if you're running trailers and the feature in the same digital format, even in a poorly-aligned theatre, if you have to turn it down for the feature, you should not turn it down for the trailers -- unless you think the trailers are too loud. That would be a subjective determination you should make independantly for each piece of film you run, be it a trailer, feature, or short. --jhawk
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Manny Knowles
"What are these things and WHY are they BLUE???"
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Posts: 4247
From: Bloomington, IN, USA
Registered: Feb 2002
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posted 03-05-2002 03:37 PM
Antonio:Let me see if I understand your question... Are you asking about the DTS and THX audio that comes on the disc for the movie? Are you wondering if those are remixed to match the level of the feature on the same disc? The answer is...no...I don't think they are remastered specifically for the movie. I think that DTS just puts the exact same version of each of those tracks on every disc. Karen could verify this. HTH, Manny. And now, our next episode of "Alphabet Soup" for those who are learning the codes...
HTH = "Hope this helps." ------------------ And, hey! Let's be careful out there. ~Manny.
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