- Dolby Multichannel Audio Tool User's Manual

Troubleshooting Metadata Problems
Dolby
®
DP570 Multichannel Audio Tool User’s Manual 27
4.4 Troubleshooting Metadata Problems
TheDP570hasseveralstatusindicatorstohelptroubleshootmetadata‐relatedproblems.
Thefront‐panelstatusdisplayshowsthemetadatasourceasExternalifanymetadata
sourceissettoexternal.
Metadata InputindicatorsonboththeDP570frontpanelandintheDolbyRemote570
softwareprovidestatusinformation.Theindicatorsaregreenanytimeavalidmetadata
signalispresent,whetherornotitisbeingused.Theyturnredonlywhenanexternalport
isinuseandthereisa
problemwiththemetadatasignal.
TheMetadata ParamssubmenuundereithertheSetuporstatusmenuonthe
front‐paneldisplaycanalsobeusedtodeterminethecurrentsourceforaparameterand
itscurrentvalue.
4.5 Outputting Metadata
YoucanchoosetosendmetadatafromtheDP570todownstreamdevicesusingthe
Metadata Outputconnectorontherearpanel.Theframerateforoutputmetadataissetby
thereceivedvideoreferencesignalandislockedtothebeginningofthevideoframe.
4.6 Monitoring Downmixes
TheDP570allowsyoutoauditionvariousdownmixesbeforefinalizingthecontent.
Previewingdownmixconditionsisessentialinprovidingthebestpossibleaudioqualityin
listeningenvironmentswithfewerspeakers.Selectadownmixmodeandmakeany
necessaryadjustmentstothemetadataorthesourcemixaccordingly.
Youcansetup
separatesetsofspeakersfordifferentdownmixconditions,sendingastereo
downmixtotheleftandrightspeakersinyour5.1listeningenvironment,thentoa
differentsetofstereospeakersjustbychangingyourspeakerselectionsetting.Itisagood
ideatohavealow‐gradealternatespeakerconfiguration
setuptomonitorthestereoand
monodownmixestomakesureprogramcontentplaysappropriatelyin
“fidelity‐challenged”environments.
TomonitorthevariousdownmixesintheDolbyRemote570application,clickany ofthe
buttonsshowninFigure 4‐3,thenadjustsettingsonthemetadatatabsasnecessary.
Figure4‐4 
Figure 4-3 Downmix Options
Note: IftheDP570isusingexternalmetadataandthereisatemporaryerrorinthe
metadatastream,theunitcontinuestousethelastvalidmetadata values.When
theerrorclears,theDP570resumesusingthestreamfromtheexternalport.