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30 Dolby
®
DP570 Multichannel Audio Tool User’s Manual
Using the DP570 Features Monitoring Downmixes
4.6 Monitoring Downmixes
TheDP570allowsyoutoau ditionvariousdownmixesbeforefinalizingthecontent.
Previewingdownmixconditionsisessentialinprovidingthebestpossibleaudioqualityin
listeningenvironmentswithfewerspeakers.SelectaDownmixmodeandmakenecessary
adjustmentstothemetadataorthesourcemixaccordingly.
Youcansetupseparate
setsofspeakersfordifferentdownmixconditions,sendingastereo
downmixtotheleftandrightspeakersinyour5.1listeningenvironment,thentoa
differentsetofstereospeakersjustbychangingyourspeakerselectionsetting.Itisagood
ideatohavealow‐gradealternatespeakerconfigurationset
uptomonitorthestereoand
monodownmixestomakesureprogramcontentplaysappropriatelyin
“fidelity‐challenged”environments.
TomonitorthevariousdownmixesintheDolbyRemote570application,clickanyofthe
buttonsshowninFigure 4‐3,thenadjustsetting sonthemetadatatabsasnecessary.
Figure 4-3 Downmix Options
4.7 Measuring and Setting the Dialogue Level
Thedialoguelevelparameter,alsoknownasdialoguenormalizationordialnorm,isavital
elementinaudiocontentcreation.Theproperdialoguelevelvalueensuresthat the
consumerhearsdifferentprogramsatthesamelevel.SeeDialogueLevelonpage 86fora
detailedexplanationofthedialoguelevelparameter.Thedialogue
levelforeachprogram
mustbecarefullymeasuredandthenappropriatelyset.Thisiseasyusingthecontrolinthe
DialogueLevelSetareaoftheDolbyRemote5 70,showninFigure 4‐4.
Figure 4-4 Measurement Control Options
4.7.1 Identifying Normal or Average Level Program Segments
Tosetthedialoguelevelparameter,thefirstandmostimportantstepisselectingaudioclip
samplesthatrepresenttheaverageloudnessleveloftheprogramcontent.Rememberthat
thedialoguelevelparameterestablishesthelevelfornormaldialogueintheprogram;
quieterandlouderscenestendtoshowhigheror
lowermeasurementsthanthecorrect
value.Usingmorethanoneclipisworthwhileparticularlyinprogramsthatfeature