Dolby Laboratories DP570 8.2.2 Monitoring Dialogue Level

Using the DP570 in Master Control Typical Activities
Dolby® DP570 Multichannel Audio Tool User’s Manual 59
Figure 8-2 Typical Downmix Options
Or,ifaviewercomplainsabouttheaudioqualityonamonotelevisionwhenviewinga5.1
program,theMCoperatorcanquicklyselectMonointheDownmixsection,andRFto
emulatetheviewerʹslisteningconditions.
8.2.2 Monitoring Dialogue Level
Whenchangingprogramsorchannels,refertothedialoguelevelindicatorstoverifythat
theDialogueLevelvaluesetinthesoftware—thegreennumbersinFigure 8‐3—andthe
measuredvalue—theyellow numbersinFigure 8‐3—ofspeechmatch±2dB.
Figure 8-3 Dialogue Level Controls
IftheDialogueLevelvaluedoesn’tmatch,werecommendadjustingtheoverallaudiolevel
untilitdoes.
Inmostcasesshort‐termmeasurementsarebestastheyprovideameasurementoveraten‐
secondperiodofprogramaudioanddonotaveragethemeasurementoveralongperiod
oftime.Formoreinformationonthemeasurementmodes,seeMeasuringtheAverag e
LoudnessofIdentifiedClipsonpage31.
Note:Asingleprogrammusthaveasingledialnormvalue,andthisvalueshouldnot
changewithintheprogram.Adjustaudiolevelstomatchdialnormifnecessary,
ratherthantheotherwayaround.