This is topic Apes sound problem? in forum Film Handlers' Forum at Film-Tech Forum ARCHIVE.
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Posted by Jeff Joseph (Member # 511) on 08-01-2001, 04:47 PM:
This was emailed to me for comment; I have no idea what this "projecionist" meant by his comments...does anyone here?Jeff Joseph
Here's the email:
Witnessed "Planet of the Apes." Listening was
another story. During the entire presentation,it
seemed as though there was feedback and
an echo every single time someone spoke
(Still debating whether this audio glitch
improved the film). Upon exiting, I contacted
the theater manager, out of curiousity more
than irritation. He had no clue. Surprisingly
though, he said he'd be more than happy to
put me in touch with the projectionist.
The projectionist knew exactly what i was
talking about. He went on to say that the studio
shipped bad audio cd's that simultaneously
played along with the film that causes a delay
in the speaker system (or something like this-
i'm no audio engineer so that's pretty much all
i got out of it).
--------------------------------------------------
Any thoughts on this?
Jeff
------------------
Posted by Gordon McLeod (Member # 33) on 08-01-2001, 04:49 PM:
bad cds?
the logic in the dts I believe is rather finite it is analogue or digital not both
If they have both it sounds like a format control problem in the cinema processor
Posted by Mike Blakesley (Member # 26) on 08-01-2001, 04:56 PM:
Sounds to me more like the DTS system was not on, and the guy was hearing dialogue badly leaking into the surrounds. Ours sounds fine.
Posted by John Walsh (Member # 168) on 08-01-2001, 05:26 PM:
I think there's just not enough information to tell what really happened. Could the surround delay have been set wrong? (Perhaps it was echoing all the time, but it's easier to hear during dialog-only scenes.) Or something stupid like; a port window was open, and the booth monitor turned up; or a "hard" rear wall causing an echo? Or something really dumb, like leaving a microphone/PA turned on.I don't think it's anything directly related to the DTS system.
Posted by Greg Mueller (Member # 17) on 08-01-2001, 06:50 PM:
I saw it in SRD and it was fine except at one point it dropped out. The drop out was acompanied by horizontal "shadow bands" across the screen. You could sure tell when it dropped out of digital!------------------
Greg Mueller
Amateur Astronomer, Machinist, Filmnut http://www.muellersatomics.com/
Posted by Jonathan Haglund (Member # 807) on 08-02-2001, 03:39 AM:
On some older processors (Smart MOD-2 for example) DTS will play but not cut out the analog. I have this problem on one system set up with SDDS. To fix it, I have to turn down the volume all the way on the analog format and all is well. So it seems that they are playing in both analog and digital, and bad disc's seems like something they pulled out of the lame-o-tron 
basket.
Posted by John Pytlak (Member # 331) on 08-02-2001, 06:54 AM:
I agree that it was either a format control problem, allowing analog and digital to play at the same time, or something "dumb" like an open port so the booth monitor could be heard.------------------
John P. Pytlak, Senior Technical Specialist
Worldwide Technical Services, Entertainment Imaging
Eastman Kodak Company
Research Labs, Building 69, Room 7419
Rochester, New York, 14650-1922 USA
Tel: 716-477-5325 Cell: 716-781-4036 Fax: 716-722-7243
E-Mail: john.pytlak@kodak.com
Web site: http://www.kodak.com/go/motion
Posted by Gordon McLeod (Member # 33) on 08-02-2001, 09:00 AM:
If wired correctly a Mod2 should not have any analogue bleeding through when the digital is playing
The mag input is on a bus and should not have a problem a cp100 relay board is required to prevent the dts playing garbage in the analogue mode though.
With SDDS the analogue loops into the SDDS processor so the analogue should be killed internally in the SDDS unit again the problem in the Mos2 should not be there
Posted by Paul G. Thompson (Member # 655) on 08-03-2001, 01:39 AM:
I didn't notice any echo - but I did observe that the DTS reader had trouble reading the time code. It could have been that the unit may have been bouncing back and forth to analog - quite frequently. Other DTS prints in that particular house seemed to be just fine.Watch your green light. Mine went from solid green to nothing at all at random. The buffers did not have time to completely dump, so it never really defaulted to analog.
Paul
Posted by Karen Hultgren (Member # 395) on 08-09-2001, 05:14 PM:
There is no way that DTS will cause the "CDs" and analog will play at the same time - these are two different inputs on the CP. It could be a CP problem.Karen at DTS
Posted by Rory Burke (Member # 512) on 08-09-2001, 05:51 PM:
The answer is in the initial thread.........the projectionist was spilling prophtic babbage and trying to make himself sound legitimate to the patron.!!
Rory