Dolby Laboratories DP570 - Manual (Page 61)

Using the DP570 in Live Remote Broadcast Typical Tasks
Dolby ® DP570 Multichannel Audio Tool User’s Manual 49
Figure 6-2 Typical Downmix Parameters
Further, you can assess whether the announcerʹs voice will survive during a Pro Logic ® or
Pro Logic II decode from a stereo downmix by selecting Pro Logic while downmixing to
stereo. While assessing the mix during downmixing, the mixer can make adjustments in
order to ensure that the 5.1 mix provided will sound good in all manner of home
environments, from mono to stereo to 5.1.
6.2.1 Measuring and Setting Dialogue Level
Decide on a Dialogue Level value for the broadcast and refer to the dialogue level
indicators during periods of representative speech during the show. The measured value
from program material appears in yellow numbers (
–26 in Figure 6‐3). The Dialogue Level
value set in the software appears in green numbers ( –27 in Figure 6‐3).
Figure 6-3 Dialogue Level Controls
To change the value in the software, press the Accept button. The system will transfer the
number appearing in the measured value window to the dialnorm value window, and set
the parameter automatically.
In most cases, short‐term measurements are best for live mixing as they provide a
measurement for each ten‐second period of program audio. For more information on the
measurement modes, see
Measuring the Average Loudness of Identified Clips on page 31.
For 5.1 programming, measure the Center channel, as most of the important speech content
occurs here. For stereo programs measure both the Left and Right channels.