Originally Posted by tom_lowe
1) Films are actually shot at 24fps, only 23.98 if shot on an HD format
2) DTS is NOT 96K, only the 24/96 variant of DTS.
3) SDDS is hardly ever used for any cinematic releases anymore, and 44.1 is actually more to do with music CDs
4) Dolby Digital is 48K 16-bit
5) 29.97 is mentioned in broadcast, but often rounded up to 30fps for simplification
I dont think SDDS is even done anymore- I am at Sony so I can ask around, but I would be surprised if it every goes out in release prints- I dont think they have made the processors in nearly a decade now. The firmat did sound awesome, and I know when we did U571 it just kicked ass- the thing that was cool was that we dedicate the outside L-R speakers to Music only, and used the inner L-C-R for our Dia and FX.... that film sounded pretty awesome. Its real weakness was that the strip really didnt hold up for crap- so unless you saw a print in the first week, you didnt hear it in SDDS.
There is also the new 7.1 format with the dual rear surround channels- But I think most films are being done in plain "old" Dolby Digital, and then Dolby EX, which is a matrixed rear center channel, and of course we have "regular" DTS and the High Rez DTS- though I thought that was really designed for DVD-A