Most important metadata, 4 most important metadata – Dolby Laboratories Multichannel Audio Tool DP570 User Manual
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Dolby
®
DP570 Multichannel Audio Tool User’s Manual
Using the DP570 in Postproduction
7.4
Most Important Metadata
The following highest‐priority parameters have the greatest impact on your work. We
suggest you address them in this 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: Select one that sounds best; None is not recommended as it may
cause peak limiting in a consumerʹs decoder during downmixing. For more
information on compression modes, see
. Set it once for each program.
5.
Surround –3 dB flag: Set according to the setting of the original mixing room.
Typically this flag is enabled when a mix was balanced on a theatrical dubbing or
mixing stage where the surround channels were SPL‐adjusted to 82 and the main
speakers were SPL‐adjusted to 85.
6.
Downmix parameters: Set according to the content of your program and the likely
playback environment for each downmix.
•
Center downmix level
•
Surround downmix level
•
Preferred stereo downmix
•
Lt/Rt Center downmix level
•
Lt/Rt surround downmix level
•
Lo/Ro Center downmix level
•
Lo/Ro surround mix level
Note:
Ensure that these parameters are set correctly because other parameters depend on
them.