- Dolby Multichannel Audio Tool User's Manual

Typical Tasks
Dolby
®
DP570 Multichannel Audio Tool User’s Manual 47
Figure6‐2 
Figure 6-2 Typical Downmix Parameters
Further, youcanassesswhethertheannouncerʹsvoicewillsurviveduringaProLogic
®
or
ProLogicIIdecodefromastereodownmixbyselectingProLogicwhiledownmixingto
stereo.Whileassessingthemixduringdownmixing,themixercanmakeadjustmentsin
ordertoensurethatthe5.1mixprovidedwillsoundgoodinallmannerofhome
environments,frommonotostereo
to5.1.
6.2.1 Measuring and Setting Dialogue Level
DecideonaDialogueLevelSetvalueforthebroadcastandrefertothedialoguelevel
indicatorsduringperiodsofrepresentativespeechduringtheshow.Themeasuredvalue
fromprogrammaterialappearsinyellownumbers(–26inFigure 6‐3).Thedialoguelevel
metadatavalueinthesof twareappearsingreen
numbers(–27inFigure 6‐3).
Figure6‐3 
Figure 6-3 Dialogue Level Controls
Tochangethevalueinthesoftware,presstheAcceptbutton.Thesystemwillsetthe
parameterautomatically.
Inmostcases,short‐termmeasurementsarebestforlivemixingastheyprovidea
measurementforeach10‐secondperiodofprogramaudio.Formoreinformationonthe
measurementmodes,seeSection 4.7.2.
For5.1programming,measuretheCenterchannel,asmostoftheimportantspeechcontent
occurshere.Forstereoprograms,measureboththeLeftand Rightchannels.