- Dolby Multichannel Audio Tool User's Manual

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.
Typically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
CopyrightBit Yes Yes Yes Yes
OriginalBitstream Yes Yes Yes Yes
AudioProductionInfo No No No No