46 Dolby® DP570 Multichannel Audio Tool User’s Manual
Using the DP570 in DVD Mastering Most Important Metadata
3. Dialoguelevel:thedialnormparameter.Comparethemeasuredvalue(shownin
yellownumbers)tothedialnormmetadataparametervalue(showningreen
numbers)periodicallyasyouwork.
4. Compressionmode:selectonethatsoundsbest;Noneisnotrecommendedasitmay
causepeaklimitinginaconsumerʹsdecoderduringdownmixing.Formore
informationoncompressionmodes,seeSettingDynamicRangeControlonpage34.
Setitonceforeachprogram.
5. Surround–3dBFlag:Setthisaccordingtothesettingoftheoriginalmixingroom.
Typic ally thisflagisenabledwhenamixwasbalancedonatheatricaldubbingor
mixingstagewherethesurroundchannelswereSPL‐adjustedto82andthemain
speakerswereSPL‐adjustedto85.
6. Downmixparameters:setaccordingtotaste:
•Centerdownmixlevel
• Surrounddownmixlevel
• Preferredstereodownmix
•Lt/Rtcenterdownmixlevel
•Lt/Rtsurrounddownmixlevel
•Lo/Rocenterdownmixlevel
•Lo/Ro/surroundmixlevel