This is topic DTS Stereo in forum Film Handlers' Forum at Film-Tech Forum ARCHIVE.
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Posted by Steve Kraus (Member # 476) on 02-12-2002, 09:10 PM:
(I refer to the SVA analog track not the discontinued 2:4 matrixed digital system.)In absence of other information do we presume SR or A?
I run a tremendous variety of films and in my experience A is pretty rare; if it's stereo it's almost always SR. I encounter mono more than I do A. Can one make a presumption of SR about a print credited to DTS as well?
Posted by Richard Fowler (Member # 893) on 02-12-2002, 10:56 PM:
DTS analog stereo track was a type A, but may have changed....Karen should know.
Richard Fowler
TVP-Theatre & Video Products Inc. www.tvpmiami.com
Posted by Ray Derrick (Member # 1001) on 02-13-2002, 02:34 AM:
Now this is a very good question! As Richard says DTS Stereo has always been A-type. I was told some time back by a DTS insider that this was because DTS didn't want to get involved with any legal shootout down at the Double-D corral (you know, patents an' all). However it IS very confusing because traditionally, if a film has both Dolby Digital AND DTS then the analog track will always be SR. But if it has only DTS then it should (in theory) always be A-type. The big question is - has this changed in recent times, particularly since DTS developed their SR emulation scheme for the DTS-6AD? As far as I know it has not, but if it has changed, then surely the logo should be also changed to "DTS Stereo SR"? How about it young Karen?
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Ray Derrick
President/Chief Engineer
Panalogic Corporation Sydney, Australia
Phone: 61 (0)2 9894 6655 Fax: 61 (0)2 9894 6935
Posted by Brad Miller (Member # 2) on 02-13-2002, 03:57 AM:
I'm a bit curious as to what the last dts only movie was. I have a feeling it's been at least a few years since an A track was produced, but a very interesting question nonetheless. Karen?
Posted by Leo Enticknap (Member # 534) on 02-13-2002, 04:46 AM:
'The Day Trippers' was the last one I remember.
Posted by Michael Brown (Member # 890) on 02-13-2002, 06:41 AM:
What about recient films Anti-Trust, Heartbreakers and Legally Blond which were DTS/SDDS releases. No SRD. I was assuming the analog tracks on these would be DTS Stereo. (and thus A type)
Posted by Jon Bartow (Member # 241) on 02-13-2002, 07:07 AM:
"Original Sin" was in DTS only without SRD. I don't remember a SDDS track but then again none of my theaters use the SDDS system so I don't usually look for it.
As I remember when it was playing in a house without a DTS player it was in SR, and supposedly it sounded fine.
Posted by Jeffry L. Johnson (Member # 453) on 02-13-2002, 12:04 PM:
In 1997 January I posted to rec.arts.movies.tech that, in response to my email query, Karen Hultgren said that DTS has used SR noise reduction for three years. "Universal almost always releases their movie's stereo optical tracks in SR." -- Patrick T. Chamberlain, 1996 April 4.
Posted by Jesse Skeen (Member # 586) on 02-13-2002, 02:16 PM:
It should say on the leader if it is SR, usually "SR STEREO"- I remember Original Sin was actually labeled "SRD" even though it wasn't Dolby Digital- if it just says "STEREO" or "DTS", I play it in Dolby A to be on the safe side since it sounds terrible if you play anything in SR that isn't supposed to be.
Posted by Bobby Henderson (Member # 840) on 02-13-2002, 06:55 PM:
Actually, all Universal Studios movies still have their analog SVA tracks branded as "DTS Stereo", even though the DTS Stereo logo is rarely featured on their film credits anymore. The NY and LA area stack ads still use the icon.As to the A or SR thing, I guess it could go either way. I have some old THX TAP sheets where films like "Casper" were listed as having "DTS Stereo SR" type tracks and to play back those tracks using Dolby SR or SR compatible modes.
Posted by Bobby Henderson (Member # 840) on 02-13-2002, 07:03 PM:
Oh, and on occaision some MGM movies will actually appear with only DTS Digital and DTS Stereo audio.
Posted by Karen Hultgren (Member # 395) on 02-13-2002, 08:06 PM:
Hi Steve,Yes, here at DTS, we can do optical tracks in either A-Type of SR-Type. Both are compatible with Dolby A-Type and SR playback systems.
Karen at DTS
Posted by Karen Hultgren (Member # 395) on 02-13-2002, 08:09 PM:
Just a quick note, most optical tracks these days are done in SR. Very few release in A-Type. Whatever the studio wants, we do.And, DTS STEREO can be either A-Type or SR-Type. We can do both.
Karen at DTS
Posted by Gordon McLeod (Member # 33) on 02-13-2002, 09:23 PM:
Is it not more of a question of what is on the mag printmaster you recieve to make the optical neg from rather than an encoder question to determin the final release?
Posted by Ray Derrick (Member # 1001) on 02-14-2002, 05:55 AM:
So obviously the answer to Steve's question, at least with recent films, is "assume SR". But is there a definitive way to tell, other than a listening test? In other words, is "SR" always marked on the leader with a DTS-only SR print, Karen?
------------------
Ray Derrick
President/Chief Engineer
Panalogic Corporation Sydney, Australia
Phone: 61 (0)2 9894 6655 Fax: 61 (0)2 9894 6935
Posted by Karen Hultgren (Member # 395) on 02-14-2002, 06:21 PM:
Hello Ray,I'd like to say "yes", that every print it correctly labeled but in the real world, I've seen prints mismarked. If the studio correctly lables the print and the optical track is in DTS SR-Type, it should be labeled that way.
Karen at DTS
Posted by Steve Kraus (Member # 476) on 02-14-2002, 11:36 PM:
Gordon McLeod asked:
>Is it not more of a question of what is on the mag printmaster
>you recieve to make the optical neg from rather than an encoder
>question to determin the final release?In absence of an authoritative answer I would suggest that they don't *receive* a printmaster. If it's a DTS Stereo mix then that would mean that their equipment was used to *create* the printmaster. Specifically, their matrix to create 2 channels from 4 and of course 2:4 channel decoding so the mix can be monitored through it. That and some NR cards (presumably Dolby's if SR) and other goodies like metering to avoid clash etc.
I would also hazard a guess that they probably don't make the neg although I could very well be wrong since one of the attributes of DTS Stereo was supposed to be slightly greater maximum modulation of the track. That aside, the mag printmaster would be the *end* of their involvement, not the beginning.
Posted by Ray Derrick (Member # 1001) on 02-15-2002, 06:44 AM:
Thanks KarenOf course occasional mislabelling is not a problem confined to DTS. I have come across plenty of Dolby Stereo films marked incorrectly, even in broadcast televison where the station would receive a 1" videotape master of a Dolby encoded movie which was marked incorrectly. If no one who knew the difference was around to check, the movie would be played sounding just awful!
------------------
Ray Derrick
President/Chief Engineer
Panalogic Corporation Sydney, Australia
Phone: 61 (0)2 9894 6655 Fax: 61 (0)2 9894 6935
Posted by Jeffry L. Johnson (Member # 453) on 02-15-2002, 09:12 AM:
For more information on print masters see "Chapter 11: From Print Masters to Exhibition" in Sound for Film and Television by Tomlinson Holman, ISBN 0-240-80291-8.
Posted by Brad Haven (Member # 954) on 02-24-2002, 11:38 AM:
i know the topics a bit old now, but i screened "ring 2" (japanese horror) today and it was dts stereo, i played it as dolby sr and it sounded great.
the last dts stereo film before this that i've seen was also "the day trippers"