Dolby Laboratories Multichannel Audio Tool DP570 - Manual (Page 74)

58 Dolby ® DP570 Multichannel Audio Tool User’s Manual
Using the DP570 in Master Control
8.3 Using Unity Gain Mode
Unity Gain mode should be off to best emulate a consumerʹs listening experience. To
compare between off‐air (for example, consumer emulation) and preview signals, Unity
Gain mode may be enabled. Refer to
Section 4.16 for more information.
8.4 Using the DP570 with Other Dolby Equipment
The Cat. No. 549 Dolby GPI/O Controller provides a quick method to change downmix and
compression modes while monitoring.
8.5 Most Important Metadata
We suggest monitoring these highest‐impact metadata parameters in priority order:
1. Program configuration: The number of type of programs included in the Dolby E
stream.
2. Channel mode: The number of audio channels in the program; set it once for each
program.
3. Dialogue level: Compare the measured value, shown in yellow numbers, to the
metadata parameter value, shown in green numbers, periodically as you work.
4. Compression mode: Any mode other than None is acceptable. None is not
recommended as it may cause peak limiting in a consumerʹs decoder during
downmixing. For more information about compression modes, see
Section 4.8 .
Note: Ensure that these parameters are set correctly because other parameters depend on
them.