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Author Topic: Location of soundtrack on film Manny Knowles "What are these things and WHY are they BLUE???" Posts: 4247 From: Bloomington, IN, USA Registered: Feb 2002 posted 10-14-2003 12:35 PM                     Off-Topic -- but I used a pulse-sync system with Super-8 to make a 3D travelogue back in the late 80s.  |  IP: Logged Sean Weitzel Jedi Master Film Handler Posts: 619 From: Vacaville, CA (1790 miles west of Rockwall) Registered: Dec 1999 posted 10-14-2003 12:36 PM                     One of the most common cameras for Regular 8 sound was a Fairchild Cinephonic Eight. Here are some photos of the camera.  |  IP: Logged John Pytlak Film God Posts: 9987 From: Rochester, NY 14650-1922 Registered: Jan 2000 posted 10-14-2003 03:53 PM                        Again, the actual offset on the print should be 21 frames. The BKSTS figure of 20 frames when lacing the projector is putting the sound in sync at about 50 feet from the screen speakers, suitable for most theatres.  |  IP: Logged System Notices Forum Watchdog / Soup Nazi Posts: 215 Registered: Apr 2004 posted 06-23-2006 10:40 AM                 It has been 982 days since the last post.  |  IP: Logged Iben Jimenez Film Handler Posts: 27 From: Cayey, PR, US Registered: Mar 2006 posted 06-23-2006 10:40 AM                     But, What does inclusive means in terms of the offset? The "Picture Start" frame must be in the gate, so I have to count 20 frames including the frame already in the gate? Where does the light of the mono reader must be, exactly in the diamond, or the division mark of that frame?  |  IP: Logged Frank Angel Film God Posts: 5305 From: Brooklyn NY USA Registered: Dec 1999 posted 06-23-2006 11:42 AM                        The diamond for absolute sync of pic and sound at the screen. And the diamond is there for all the number frames (in the Academy Sync Leader) so that you can thread up on, say, number 10 -- i.e., you can use any numbered frame and there will be a corresponding diamond for that frame which you can line up in sound scanning beam. It sure would be nice if someone designed a projector with an adjustable loop -- a knob that you could just dial the distance marked in feet from your screen to the middle of the theatre. You need 60ft....you just turn the Loop Adjustment knob to 60ft. How sweet it would be...and fairly simple to design.  |  IP: Logged Charles Greenlee Jedi Master Film Handler Posts: 801 From: Savannah, Ga, U.S. Registered: Jun 2006 posted 06-24-2006 11:45 AM                        "35mm magnetic 28 frames in retard 35mm Dolby Digital 26 frames in advance" So DD can be placed in a basment configuration? I've never seen it like that. What all can be done that way? SDDS, DTS, mag?  |  IP: Logged Randy Stankey Film God Posts: 6539 From: Erie, Pennsylvania Registered: Jun 99 posted 06-24-2006 11:55 AM                     Advance/retard for Dolby Digital is flexible, depending on the projector, isn't it? If you have a penthouse it would be retarded. If you have a basement reader it would be advanced. Further, if your penthouse is set up differently the offset might change, based on how you thread. The Dolby Digital decoder, the DTS player and the SDDS player all have adjustable offsets just for the purpose.  |  IP: Logged Lyle Romer Phenomenal Film Handler Posts: 1400 From: Davie, FL, USA Registered: May 2002 posted 06-24-2006 11:58 AM                     I'm pretty positive that DD is the only digital system that can have a basement reader.  |  IP: Logged Charles Greenlee Jedi Master Film Handler Posts: 801 From: Savannah, Ga, U.S. Registered: Jun 2006 posted 06-24-2006 12:23 PM                        Yeah our big screen had BOTH DTS and DD, in penthouse no doubt. DTS was top most, then just below it the DD, which put us setting the DTS at a huge delay. The manul said not to set it for over, I forget, something like 30? We had to set it to almost 60 I think. Would have made more sense to put the DD in the basment.  |  IP: Logged Richard Fowler Film God Posts: 2392 From: Ft. Lauderdale, FL, USA Registered: Jun 2001 posted 06-24-2006 01:47 PM                     Sondor, which supplies projection/sound equipment for studio and screening rooms have the "Soundhouse" soundhead which can read Dolby Digital + Analog and DTS Built to be used as a penthouse with custom delay for the analog track. MegaSystems was working on something similar but it never came to market.  |  IP: Logged Richard Hamilton Phenomenal Film Handler Posts: 1341 From: Evansville, Indiana Registered: Jan 2000 posted 06-24-2006 03:57 PM                     Richard, We have a couple of the analog only penthouse readers out there. It is a B.A.C.P./USL DSTR modified for analog. We sold a few of the 8/70 - 35mm combo projectors. When the idea to add 35mm to the existing 8/70 machine, we realized there was no where to add a basement 35mm reader. The big issue was finding a piece of gear that would delay the signal for about 2 seconds. Rick  |  IP: Logged Phil Hill I love my cootie bug Posts: 7595 From: Hollywood, CA USA Registered: Mar 2000 posted 06-24-2006 04:07 PM                  I agree Rick, I did the same thing at Iwerks for a 35mm version of the linear loop projector. Dare I mention Peavey <cough> Media Matrix <cough> for the delay? Yikes! But I do like the Sondor Soundhouse product that Richard mentioned. I would like an "all-in-one" penthouse red system so I can keep my "light bulb" soundhead for old films.  |  IP: Logged Ron Curran Jedi Master Film Handler Posts: 504 From: Springwood NSW Australia Registered: Feb 2006 posted 06-24-2006 07:54 PM                        We have our Dolby Digital penthouse mounted on top of the DTS reader. It works. This way we can show trailers in Dolby Digital and a feature in DTS.  |  IP: Logged Randy Stankey Film God Posts: 6539 From: Erie, Pennsylvania Registered: Jun 99 posted 06-25-2006 12:28 AM                     In a couple theaters where I worked, there was an issue with stacking digital penthouse readers when the threading path was changed. It was an SDDS on top of a DTS. At first, they were set up so that you had to always thread the DTS, even if the movie was in SDDS. Then people started bypassing the DTS if it wasn't being used. That threw the sound sync WAY out of whack! I had to go back and reset the SDDS so that the DTS was bypassed when it was being used. (Dumb management decision. I wanted it the other way but I was overruled.)  |  IP: Logged

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