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Dolby Laboratories DP570 Stereo System User Manual

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DP570 Multichannel Audio Tool User’s Manual

Using the DP570 in Live Remote Broadcast Using the DP570 with Other Dolby Equipment

6.2.2 Monitoring the Dialogue Level

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.

6.2.3 Monitoring Downmixes

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UnityGainModeonpage 39,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:

thedialnormparameter.Comparethemeasuredvalue(shownin

yellownumbers)tothedialnorm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page 88.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

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

them.

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