Dolby Laboratories Atmos User Manual download pdf (Page 26)

Setting Up a Pro Tools Session

18 Authoring for Dolby

Atmos

™

Cinema Sound Manual

3.3.2 Working with Objects

Pro Tools tracks for objects in a Dolby Atmos mix use mono and stereo signal paths,

which, like the bed, are also configured in the session

I/O Setup. However, instead of

using Pro Tools built-in mono and stereo panning controls on each object track, you

insert a Dolby Atmos Panner plug-in and use its controls. The Dolby Atmos Panner plug-

in provides controls to write automation for Dolby Atmos metadata (pan position and

other object metadata) to the track automation playlist. For example, the metadata places

the object at a single point in a zone (or speaker zone), or moves it across one or more

zones.

Typically, Dolby Atmos metadata is applied to audio at the RMU. Metadata in the

automation playlist does not affect the sound within the Pro Tools session. Use the Dolby

Atmos Monitor application while authoring in Pro Tools to listen to the RMU output of

the bed, objects, and the effect of metadata, in real time.

Note:

To hear audio from an object track at the RMU, the object must exist in Pro

Tools (that is, the track Panner plug-in must have an object number

assigned to it), and

I/O Setup must be configured for Dolby Atmos.

When the object exists, auxiliary input tracks and other tracks that route to

the same object output path will also output at the RMU.

The combination of objects supported by paths in the I/O Setup and primed for use with

Dolby Atmos Panner plug-ins ensures that the session meets the Dolby Atmos

specification and provides audio and metadata for up to 118 objects to the RMU for

rendering. As noted previously, it is important to designate as an object any material that

benefits from precision panning.

3.4 Creating a Pro Tools Session for Dolby Atmos

Apply the Dolby Atmos specification for Pro Tools when creating a new Pro Tools

session, or when reconfiguring an existing session (for example, when changing a 7.1- or

5.1-channel session to a Dolby Atmos session).

3.4.1 Creating a New Pro Tools Session

This section provides steps for creating a Pro Tools session in the Dolby Atmos standard

timecode rate (24 fps). If you are not working with a 24 fps session, see Working with a

Timecode Rate Other than 24 FPS.

To create a new Pro Tools session for Dolby Atmos authoring:

1. Choose

File > New Session.

2. Select the

Create Blank Session option.

3. Select the audio file type, sample rate (48 kHz), and desired bit depth.

You can work with different sample rates during sound creation or premixing, but

you must change the session sample rate prior to working with the RMU.

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