Correct bus support for Dolby Atmos projects

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jpgtr
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Posts: 378
Joined: Thu Jan 13, 2011 3:06 pm

Correct bus support for Dolby Atmos projects

Post by jpgtr »

Submitting a formal bug report here at the suggestion of Steinberg support.

Problem: When you follow the Nuendo manual directions* for setting up a Dolby 7.1, 9.1 or Atmos workflow, the bus names appear incorrectly in the mixer (see screenshots below).

Cause: A device port swap is required because the Dolby renderer, when working with anything from 7.1 up to 9.1 Atmos projects, expects side surrounds to appear before the back/rear surrounds.

Desired result: When setting up for Dolby 7.1 or higher, Nuendo should have the option for users to reconfigure the buss order to coincide with the Dolby specification. (That is, side surround busses should appear before back surrounds.) Perhaps this could be accomplished if we simply had the ability to re-name busses following a Device port swap?

Workaround: Swapping physical outputs at the DA converter can rectify mislabeled busses, although this of course may be problematic if you work with more than one DAW. (Pro Tools, for example, puts side surround busses ahead of the back surrounds, as per Dolby spec.)

Most recent documentation for the Dolby channel order spec can be referenced in the "Authoring for Dolby® AtmosTM Cinema Sound Manual", as well as in the "Dolby Atmos Renderer Guide", Table 2.

https://www.dolby.com/uploadedFiles/Ass ... ual(1).pdf
https://www.dolby.com/us/en/professiona ... -guide.pdf

* From the Nuendo manual: "In Nuendo, the order of surround busses and side busses follows the specification of Microsoft Inc. To meet the Dolby specification for side surround busses and surround rear busses, swap the device ports of surround busses and side busses."

Screenshots illustrating the issue are below:

This screenshot shows where I swap the Device ports as directed:
Image

In this screenshot, the red circle annotates how the mixer routing window does not portray the correct surround busses for the Dolby project. I believe it would be best if Nuendo was able to properly support a Dolby workflow with correct bus names.
Image
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mixer-bus-labels.png
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device-port-swap.png
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2012 Mac Pro 10.13.6, 24 GB RAM, Nuendo 10.1 UAD-2 Duo

jpgtr
Member
Posts: 378
Joined: Thu Jan 13, 2011 3:06 pm

Re: Correct bus support for Dolby Atmos projects

Post by jpgtr »

An additional minor, though mentionable problem regarding Nuendo's quirky support for Dolby surround is inconsistent naming of the height labels.

In this screen shot you can see where height channel abbreviations in the connections window for child busses do not match the actual bus descriptions. i.e., "Top Back Left" receives the abbreviation "Trl". etc.

Image
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height-labels-error.png
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2012 Mac Pro 10.13.6, 24 GB RAM, Nuendo 10.1 UAD-2 Duo

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