Dolby Laboratories Atmos User Manual download pdf (Page 34)

Setting Up a Pro Tools Session

26 Authoring for Dolby

Atmos

™

Cinema Sound Manual

In the figure, music, dialogue, and effects beds (stems) are mixed to 9.1 (as separate 7.1

and stereo overhead bed paths), while stereo and mono objects have their own tracks.

Each object track has a Panner plug-in to define the Dolby Atmos metadata that is sent to

the RMU. (See Using the Panner Plug-in to Position Objects.)

Note:

Audio from an object track outputs at the RMU only when the object exists

in Pro Tools and has the proper

I/O Setup

routing.

Alternatively, you can route multichannel sends (instead of track main outputs) to a

multichannel path. See Pro Tools documentation for more information.

Note:

We recommend you create a Pro Tools session template for Dolby Atmos

(including track layout, signal routing, and plug-ins) for future use. See Pro

Tools documentation for steps on how to create session templates.

3.7 Hearing Dolby Atmos Audio

Bed and object audio from Pro Tools are routed to the Dolby RMU inputs, and are then

routed to the RMU outputs. To hear bed and object audio, keep in mind the following:

• Bed tracks route to channel outputs that are mapped to the MADI I/O, as configured

I/O Setup, and then route to the Dolby RMU for rendering. Monitor bed audio

from the Dolby RMU. Bed audio material outputs from the first ten channel outputs

of the Dolby RMU.

• Object tracks route to channel outputs that are mapped to MADI I/O, as configured

I/O Setup. To hear audio from the Dolby RMU output, the object track in Pro Tools

must have a Panner plug-in with an object number assignment.

• The Monitor application must be communicating with the Dolby RMU renderer (via

a host name or IP address) and have a valid room configuration loaded.

• In the Monitor application, the following controls affect audio presence or level:

• The linear timecode (LTC) button in the transport: This button must be disabled

(unlit) for Pro Tools to output audio to the Dolby RMU, for live monitoring.

• The mute button in the transport: This button must be disabled for audio to be

present at the RMU.

• Muted speakers in the room configuration: Any speaker that is muted results in

no audio from that speaker. If all active speakers are muted, no sound will be

heard from the Dolby RMU.

• The output attenuation (

ATTEN) control in the transport: When this control is set

to –Inf (–Infinity), audio is effectively muted. The attenuator is not displayed by

default. If it is not displayed, press <Control>+<Option>+<Command>+<A> to

display the control and verify it is not set to –Inf.

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Dolby Laboratories Atmos User Manual Page 34

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