- Dolby Multichannel Audio Tool User's Manual

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.