- Dolby Multichannel Audio Tool User's Manual

44 Dolby
®
DP570 Multichannel Audio Tool User’s Manual
Using the DP570 in DVD Mastering
5.4 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
Digitaldata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Section 4.8.Setitonceforeachprogram.
5. Surround–3dB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.