Vincent, talk like that gives me a hard-on ;)

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Posted by Papibear at on August 24, 2001 at 00:51:42:

In Reply to: Yes, exactly posted by Vincent on August 24, 2001 at 00:44:11:

I'm kidding. But it IS refreshing to hear movie tech talk here every so often!

: The five-channels-across-the-front scheme was actually the *ORIGINAL* sound
format for 70mm back in the 50s and 60s- they had mono surrounds but 5-
channels up front and would really pan EVERY sound across the soundfield (listen
to the DVD of SPARTACUS for an example- even the dialogue is panned). Of
course this made sense back then when 70mm films were shown in "Roadshow"
limited engagments in 70mm for up to a year before the general relase in 35mm,
and usually on really enormous screens. The benefit of 5-channels up front is
somewhat lost in our dialogue-locked-into-the-center-channel/small-screens-in-
multiplexes age, but for some of those HUGE screens that still exist in big cities, the
5-channels that SDDS can offer up front can definitely be a benefit.

: Vincent

: : A quasi-techie checks in. One of the reasons, as I understand it, that
: : SDDS seems to be the preferred digital format for theater sound is
: : that there are two schemes for encoding the front channels. The first
: : is the traditional three-channel format of left (L), center (C) and right
: : (R) channels behind the movie screen. This is the same as Dolby
: : Digital and DTS and the same channels used for home theater DD
: : and DTS. SDDS also accomodates a FIVE-channel format across
: : the front. This means that NOT COUNTING SURROUNDS, there is a
: : left (L), left center (LC), center (C), right center (RC), and right (R)
: : channel behind the movie screen. This is provided that the film is
: : mixed in that format and the theater in which you see the film actually
: : has five speakers behind the screen. Very few theaters do. The five
: : channels across the front allows for a lot more flexibility in the mix. I
: : know that they did a 5-front channel mix of Saving Private Ryan. I
: : have no idea about J&SBSB. Anyway, this is one of the reasons why
: : sound guys like SDDS.

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