Dolby Laboratories Multichannel Audio Tool DP570 - Manual (Page 72)

56 Dolby ® DP570 Multichannel Audio Tool User’s Manual
Using the DP570 in Master Control
Figure 8‐1
Figure 8‐2
Figure 8-1 Typical Master Control Setup
8.2 Typical Tasks
Within a multichannel master control environment, it is necessary to experience the
program, both video and audio, in as close a fashion as possible to how a viewer will see it
in the home. The DP570 provides a quick and accurate method to emulate a viewerʹs
listening environment so that a master control operator can respond quickly to viewer
complaints or trouble with the incoming signal.
8.2.1 Monitoring Downmixes
A chief purpose of the DP570 in a master control environment is to provide downmixing
emulation. For example, a master control operator can quickly assess if the announcerʹs
voice during a live event will be drowned out when the original 5.1 audio channels are
downmixed to a stereo signal, by simply selecting Stereo within the Downmix section of
the remote application shown in
Figure 8‐2 .
VTR
Server
or
IRD
DP572
Digital
Audio
Outputs
Main
In
Video
Ref
Audio
3/4
1/2
3/4
5/6
Master
Control
Metadata
In
Metadata
Out
DP571
Digital
Audio
Inputs
Metadata
In
Video Ref
1/2
3/4
5/6
DP570
Digital
Audio
Inputs
Digital
Emulator
Outputs
or
optional
Analog
Outputs
Router
Outputs
1/2
3/4
5/6
Metadata
In
Digital
Audio
Outputs
L/R
Ls/Rs
C/SW
Dolby E
MPEG
Encoder
Main
In
5.1-Channel Monitor
R
C
L
SW
Rs
Ls
Metadata
Out
Metadata
Out
Video Ref