Dolby Laboratories Multichannel Audio Tool DP570 - Manual (Page 61)

Dolby ® DP570 Multichannel Audio Tool User’s Manual 45
Chapter 6
Using the DP570 in Live
Remote Broadcast
In preparation for and during a live remote broadcast, it is important to experience the
audio program the same way a viewer will in the home so you can assess the mix quality
and make appropriate adjustments. The DP570 provides quick and accurate emulation of
a viewerʹs listening environment.
The instructions in this section allow you to use the DP570 to respond quickly with
necessary changes and improvements.
6.1 Connecting the DP570 for Live Remote Broadcast
Figure 6‐1 shows a typical live remote setup. In this application, 5.1 mixed audio is routed
from the console to the MPEG encoder through the DP571, DP563, and DP570.
The mix from the console is sent first to digital inputs 1–6 of the DP571 and on to the DP570
for metadata authoring and monitoring via the DP571’s loop‐through connections. The
same mix is routed to the DP563 for downmixing to Lt/Rt and then to the DP571 for
encoding.
Lt/Rt output from the DP563 is directed by a distribution amplifier to four locations:
1. To the Lt/Rt input of the DP570 for quick and convenient monitoring
2. To the digital inputs of the DP570 for inclusion in a 5.1+2 Dolby ® E program
3. To the digital inputs of the DP571 for digital encoding
4. To the MPEG encoder for stereo audio distribution
At the DP571, metadata authored in the DP570 is joined to the audio from the DP563 and
encoded into a Dolby E stream. This stream is sent to the LM100 for metering and
confidence decoding. It is also input to the MPEG encoder prior to transmission. Lt/Rt
audio from the DP563 is separately routed to the MPEG encoder as well.