Dolby Laboratories Atmos User Manual Page 22

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Setting Up a Pro Tools Session
14 Authoring for Dolby
®
Atmos
Cinema Sound Manual
3.1 Dolby Atmos Format in Pro Tools
Before creating a Pro Tools session for Dolby Atmos, you should review the Dolby Atmos
format and how it relates to Pro Tools multichannel mixing.
3.1.1 Dolby Atmos Format and Multichannel Mixing
The Dolby Atmos format is built from audio bed material and objects in Pro Tools session
tracks (per the Dolby Atmos specification for Pro Tools), plus metadata, which is defined
by Panner plug-ins inserted on object tracks.
Figure 3-1 Basic Dolby Atmos Block Diagram
The total number of objects that can be routed via a MADI stream differs when using a
mixing console that supports 56 channels (varispeed) only.
Table 3-1 Dolby Atmos Specification for Pro Tools
Audio
Elements
Playback
Voices
(In Pro Tools)
Multichannel
Mixing Format
Channels and Track Layout
Bed 10 9.1 L, C, R, Lss, Rss, Lsr, Rsr, and LFE;
Lts and Rts (on separate bus)
Objects Up to 118 Mono or stereo C for mono; L and R for stereo
Total Up to 128
Audio Elements
There are two types of content for Dolby Atmos: bed and objects. The bed refers to
channel-based premixes or stems (including their multichannel panning). Objects refer to
mono or stereo soundtrack content. Objects have dedicated panning via Dolby Atmos
metadata (provided by Panner plug-ins and their automation playlists).
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