Dolby Laboratories DP570 6.3 Using the DP570 with Other Dolby Equipment, 6.4 Using Unity Gain Mode, 6.5 Monitoring Metadata

48 Dolby® DP570 Multichannel Audio Tool User’s Manual

Using the DP570 in Live Remote Broadcast

Asyouwork,checkthedialoguelevelindicators—theyellownumbersshownin

Figure 6‐3—frequently.Makeadjustmentstothemixtokeepthedialoguelevelvalue

(duringperiodsofrepresentativespeech)withinafewdecibelsofyourtarget.

Checkdownmixesoccasionallyandmakesuretheannouncerandotherimportantspeech

elementsarenotburiedduringstereodownmixingorProLogicdecoding.

6.3 Using the DP570 with Other Dolby Equipment

TheCat.No.549GPI/OControllerallowsquickchangesofdownmixandcompression

modeswhilemonitoring.TheDP570canbeusedeitherwiththeDP569DolbyDigitalor

DP571DolbyEEncodersbyattachingthemetadataconnectors.

6.4 Using Unity Gain Mode

UnityGainmode,detailedinSection4.16,allowstheoutputoftheDP570tomatch

preprocessedsignalstosimplifycomparisonsduringthemixingprocess.

6.5 Monitoring Metadata

Thefollowinghighest‐priorityparametershavethegreatestimpactonyourwork.We

suggestyouaddresstheminthisorder:

1. Programconfiguration:ThenumberoftypeofprogramsincludedintheDolbyE

stream.

2. Channelmode:Thenumberofaudiochannelsintheprogram;setitonceforeach

program.

3. Dialoguelevel:Comparethemeasuredvalue,showninyellownumbers,tothe

metadataparametervalue,showningreennumbers,periodicallyasyouwork.

4. Compressionmode:Selectonethatsoundsbest;Noneisnotrecommendedasitmay

causepeaklimitinginaconsumerʹsdecoderduringdownmixing.Formore

informationoncompressionmodes,seeDynamicRangeControlonpage87.Setit

onceforeachprogram.

5. Surround–3dBflagon5.1programsonly:thisparametershouldbesettoDisabled.

6. Downmixparameters:setaccordingtotaste.

•Centerdownmixlevel

• Surrounddownmixlevel

• Preferredstereodownmix

•Lt/RtCenterdownmixlevel

Note: Ensurethattheseparametersaresetcorrectlybecauseotherparametersdependon

them.