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Post #734195

Author
Synnöve
Parent topic
DTS audio preservation .... UPDATE 07 May 2015 ... Work In Progress
Link to post in topic
https://originaltrilogy.com/post/id/734195/action/topic#734195
Date created
4-Nov-2014, 3:50 AM

http://www.film-tech.com/warehouse/manuals/DTSPOSTPROD.pdf

Has this document been examined? 

You might try the Film Tech forum as those folks are the ones who'd know the technical details. I dug up this old post from there which might provide some insight on the levels: 

"Our recordings have always matched the master mix. The 3dB difference on **OLD** DTS unit refers to the playback level from the player. Remember when the spec was to set the DTS output for 85dB SPL on screen channels, 82dB SPL on the surrounds, and 88dB SPL on the sub?

Now, the spec is to set the sub for 10dB in-band gain as compared to the center channel. It is best to use a RTA for this adjustment. If you do not have a RTA, you will be in the ballpark by setting DTS sub output at 91dB SPL."

Also: from what I've read the LFE is mixed WITH the 20-80hz information present in the surrounds instead of being JUST LFE information... this is the reason why many folks thought DTS sounded more bass-rich in the cinema vs SR-D; low frequency informations present in surrounds + the mixed in LFE channel would be routed to the cinema's sub which could actually reproduce those signals accurately vs the surround speakers. SR-D's system had no bass management system so the bass in the surround channels weren't rendered as well due to surround speakers having smaller drivers.