Dolby Laboratories DP570 4.3.1 Choosing the Source of Metadata, 4.3.2 Using Generated Metadata

24 Dolby® DP570 Multichannel Audio Tool User’s Manual

Using the DP570 Features

4.3.1 Choosing the Source of Metadata

Normallyyouwilluseanentiremetadatastreamfromonesource,butthatisnotrequired.

Youcontrolthissourcechoiceatthreelevels:

1. Youchooseaprogramconfiguration.Thisdefaultsallparametersforallprogramsin

thestreamtothesourceyouchose:internal,external1,orexternal2.

AnexampleofthisconfigurationisaQCenvironment,wheretheoperatorusesthe

entiremetadatastreamtomonitortheoverallaudioquality.

2. Youchooseasourceforaparticularprogram.Thisautomaticallysetsthedefault

sourceforallparametersintheprogrambutdoesnotaffectanyoftheotherprograms

inthestream.

3. Youcanchooseanexternalsourceforanindividualparameterwhichaffectsonlythat

selectedparameter.

Typic ally youwoulddothistocorrectaknownerror.

DolbyRemote570makesselectingthemetadatasourcesimple.Choosinganexternal

programconfigurationorprogramchangesparametersettingsautomatically.Individual

parameterscanstillbechangedwithoutaffectingotherparameters.

Metadatasourcechoicesstaysetuntil:

•Youmanuallychangeasourcechoice.

•Youreceiveadifferentprogramconfiguration.

4.3.2 Using Generated Metadata

Whenthesourceisinternal, thedefaultvaluestheDP570appliesaredeterminedbythe

numberofchannelsintheinputasshowninTable 4 ‐1.

Table 4-1 Metadata Parameter Defaults

Metadata Parameter 5.1

Channels 4

channels 2

channels 1

channel

Dialogue Level–27 –27 –27 –27

Channel Mode 3/2 3/1 2/0 1/0

LFE ChannelOn Off Off Off

DC Highpass FilterOn On On On

LowpassFilter On On On On

LFEFilter On Off Off Off

SurroundPhaseShift On On Off Off

Surround3dBAttenuation On On Off Off

LineModeCompression FilmLight FilmLight FilmStandard FilmStandard

RFModeCompression FilmStandard FilmStandard FilmStandard Speech

RFOvermodulation

Protection

Off Off Off On

BitstreamModeCompleteMain CompleteMain CompleteMain CompleteMain

CenterMixLevel –3–3–3N/A

SurroundMixLevel –3–3–3N/A

DolbySurroundMode Off Off On N/A

OriginalBitstream Yes Yes Yes Yes

AudioProductionInfo No No No No