Dolby Laboratories DP570 7.2 Typical Activities

54 Dolby® DP570 Multichannel Audio Tool User’s Manual
Using the DP570 in Postproduction Typical Activities
7.2 Typical Activities
TheDP570isusedinthemonitorchaintoemulateconsumerʹslisteningenvironment.
7.2.1 Measuring Dialogue Level
Asthemixisnearingcompletion,usethedialoguelevelindicatorsduringarepresentative
periodofspeechtodetermineandselecttheDialogueLevelvaluefortheprogram.The
measuredvaluefromprogrammaterialappearsinyellownumbers(–26inFigure7‐2).The
DialogueLevelvaluesetinthesoftwareappearsingreennumbers(–27inFigure 7‐2).
Figure 7-2 Dialogue Level Controls
Ifitisnecessarytochangethevalueinthesoftware,presstheAcceptbutton.Thesystem
willtransferthenumberappearinginthemeasuredvaluewindowtothedialnormvalue
window,andsettheparameterautomatically.
Inmostcases,selectingandmeasuringarepresentativeperiodofspeechwithinthe
programwillserveasagoodexampleoftheoveralldialoguelevelthroughoutthe
program,providedgoodmixingpracticesareobserved.Insomecases,(documentaries,
locationsound,andsoon),itmaybedifficulttomatchthedialoguelevelfromsectionto
section.Inthesecases,whilethedialoguelevelindicatorsontheDP570canhelp,yourears
arethebesttooltoachievethebestbalance.
Inmostcases,short‐termmeasurementsarebestformonitoringduringeditingasthey
provideameasurementovereachten‐secondperiodofprogramaudioanddonotaverage
themeasurementoveralongperiodoftime.Foralongersectionofprogramthatwillbe
playedbackonce,aninfinitemeasurementcanbeusedasitwillintegratethemeasured
valueofthesignaluntilthemeterismanuallyreset,and,overthesinglepass,willreturn
theaverageleveloftheprogram(presumablyspeechcontent)forthatsection.Formore
informationonthemeasurementmodes,seeMeasuringtheAverageLoudnessof
IdentifiedClipsonpage31.
For5.1programming,measuretheCenterchannel,asmostoftheimportantspeechcontent
occursinthischannel.Forstereoprograms,measureboththeLeftandRightchannels.
7.2.2 Monitoring the Dialogue Level
Asyouwork,checkthedialoguelevelindicator—theyellownumbersshownin
Figure 7‐2—frequently.
OnceaDialogueLevelvaluehasbeenselected,eithershort‐termorinfinitemeasurements
canbeuseddependingonyourpreference.SeeMeasuringtheAvera geLoudnessof