|
|
This topic comprises 2 pages: 1 2
|
|
Author
|
Topic: Sound Processor for Satellite Feeds?
|
|
|
|
|
|
|
|
|
Stephen Furley
Film God
Posts: 3059
From: Coulsdon, Croydon, England
Registered: May 2002
|
posted 07-12-2007 04:51 PM
quote: Scott Norwood
What type of video projector will you be using and do you have a video processor or scaler? Most video projectors introduce a delay of about one frame, which is fine for most theatres, but if your video processor/scaler and/or projector delays the picture by more than that, you will need to delay the sound from the satellite feed by a corresponding amount (in either the analog or digital domain). I know that this is an issue with the full-size DLP units (not that you probably have one of these, though...).
We send the digital cinema sound into input 1 on a DMA8 plus, SP/dif digital from the DVD player into input 3, and I have used the digital optical output from my laptop into input 4.
Two channel analogue audio from the DVD player, DVCam recorder, and any other A/V equipment which may be brought in goes to a composite video/audio switcher, then to a two output distribution unit. One outpot goes to a little, about five inch, flat screen monitor on top of the sound rack, and the other output through a box of tricks which can do various things, but is only used to digitally delay the analogue audio signals to match the projector; the delay is three frames. This then goes into the CP-65 via the mag/aux input.
quote: Randy Stankey
From the Metropolitain Opera for starters.
I am interested in hearing about people doing this sort of thing. As far as I am concerned, digital has little advantage over film at present, and no way does it justify the cost of installing it for showing 'normal' films, which could just as well be run on film.
Obviously, showing this sort of thing is making use of the digital equipment to do something which you simply couldn't do with film, and is therefore a more interesting use of the digital equipment.
One of the projectionists who has just left the Clocktower also projects at a cinema in Brighton, which is on the south coast, about 50 miles south of London. He says they took the Met. opera shows there, and they did quite well. I don't know in what format the signals were delivered.
Showing live events on cinema screens largely died out long ago. Sporting events were the most common, of which boxing matches probably lasted until about the early '70s. I think they were shown only in black and white, I don't know whether in 405, 525 or 625 lines, though 405 would be unlikely towards the end. I had no interest in boxing, so I never saw one of these presentations, though I do remember seeing posters for them at several London cinemas, e.g. the Astoria, Old Kent Road.
Growing numbers of people having televisions at home, including colour, and presumably the cost and work involved in hireing in an Eidophor and operator, and getting it installed, and a feed hooked up to it, eventually killed off these shows. The Odeon Leicester Square was the only cinema to have an Eidophor permanently installed.
Thngs have changed somewhat today; events are now shown in high definition, so the picture quality will be better. A fair number of cinemas now have digital projectors installed, and so can show this sort of thing without having to bring in special equipment for it.
Last year the Odeon Leicester Square showed several matches from the football World Cup, and I'm told these also did quite well.
I'm a bit doubtful about showing something like the Met. Opera live; it's ok where you are, and you could probably get away with showing an early performance in London, but if you were to show it in Tokyo or Beijing for example, people would have to go out in the middle of the night to see it. They might do this once, but I think the novelty would soon wear off. It's somewhat different for a sporting event, but for 'art' I think it might be better to show a recording a few hours later, at a sensible time of day.
If anybody else is showing this sort of thing, I'd be interested to hear how you get on with it.
| IP: Logged
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Stephen Furley
Film God
Posts: 3059
From: Coulsdon, Croydon, England
Registered: May 2002
|
posted 07-14-2007 02:55 AM
So what format is the sound, and the picture for that matter, actually going to be delivered in? unless I've missed something we still don't know. Could be just about anything, PCM, Dolby Digital, Dolby E, multi-channel, 2 channel matrixed. Has the satellite system actually been installed yet? What comes out of the box at the end of it? It's quite possible that the signal gets converted to a different form, e.g. decoded to 6 channel analogue, before you even get your hands on it, or it could be AES digital, either 75 Ohm BNC or 110 Ohm XLR versions, SP/dif, who knows?
For opera you obviously want the best possible sound quality, so I wouldn't skimp on it.
| IP: Logged
|
|
|
|
|
|
All times are Central (GMT -6:00)
|
This topic comprises 2 pages: 1 2
|
Powered by Infopop Corporation
UBB.classicTM
6.3.1.2
The Film-Tech Forums are designed for various members related to the cinema industry to express their opinions, viewpoints and testimonials on various products, services and events based upon speculation, personal knowledge and factual information through use, therefore all views represented here allow no liability upon the publishers of this web site and the owners of said views assume no liability for any ill will resulting from these postings. The posts made here are for educational as well as entertainment purposes and as such anyone viewing this portion of the website must accept these views as statements of the author of that opinion
and agrees to release the authors from any and all liability.
|
Home
Printer-friendly view of this topic