Dolby Laboratories DP570 - Manual (Page 68)

56 Dolby ® DP570 Multichannel Audio Tool User’s Manual
Using the DP570 in Postproduction Most Important Metadata
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: the dialnorm parameter. Compare the measured value (shown in
yellow numbers) to the dialnorm 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
Setting Dynamic Range Control on page 34.
Set it once for each program.
5. Surround –3 dB flag: Set this 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 taste:
• 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.