In article <1992Dec28.072327.24351@daffy.cs.wisc.edu> quale@saavik.cs.wisc.edu writes:
[reply about article deleted...]
>
>Sorry, Dolby Digital is strictly a 35mm format. If you see it in 70mm,
>it will be in the Dolby A type noise reduction magnetic 6-track analog
>recording, which has greater headroom (louder louds without clipping)
>than Dolby Digital. Dolby Laboratories has no immediate plans to release
>a 70mm digital format. The 35mm Dolby SR *D format (Dolby Digital) was
>created to give 35mm prints the same discrete 6-track sound quality as
>expensive 70mm prints. Both formats are excellent and in properly tuned
>rooms both are an experience worth listening to.
>
B
>>Just another video producer, looking for the best in theatre sight and sound,
>
B
>Just the brother of a Tom Hollman trained film sound geek --
>(Tom Hollman is the T & H in THX.)
>--
>Doug Quale
Doug, I'm not shure if you're aware about the latest breakthrought in sound
processing - the KODAK CDS (Cinema Digital Sound). This process is, by far,
the best one I know (it's even better than THX!!!).
The sound is digitally encoded on the film in a manner which ressembles the
digital encoding of home CD's (yes the one you play at home!). The projector
is mounted with a special CCD reader (just like the CCD in your camcorder) and
it reads the encoded signal. Once processed, it can deliver FULL SPECTRUM audio
digital sound to all the six channels of speakers that are installed inside the hall (5 full bandwidth + one subwoofer speakers). The side channel speaker soundresponse is astonishing, you've never seen (I mean heard) anything like it.
Last year, in Montreal, we had a special demonstration of the CDS. It was made
by KODAK representatives and was held in a theatre of the NATIONAL FILM BOARD
of Canada. They showed a release of TERMINATOR 2 and a film sampler made by
KODAK to demonstrate the capabilities of the system.
B
One of the main advantage of CDS over standard DOLBY is the fact that the
digitally encoded signal does not degrade over time nor if the film is dama-
ged. Even scratches can't hurt the signal. After 500 or more viewing of the
same copy, the film sounds the same!
The only thing is that the system is costly. It costs as much as 20,000$ to
install the CCD in the projector. I hope that theatres will soon switch to
