Dolby Laboratories DP570 4.21 Dolby Pro Logic II Support

Using the DP570 Features Dolby Pro Logic II Support
Dolby® DP570 Multichannel Audio Tool User’s Manual 41
ThemasterVolu mesliderallowyou toraiseorlowerthevolumeofalltheoutputs
simultaneously.
4.21 Dolby Pro Logic II Support
TheDP570supportsfourProLogicIImodes:Movie,Music,ProLogic,andMatrix.
Panorama,Dimension,andCenterWidthofferavarietyofsettingsactivatedinMusic
mode.
Moviemodeisthestandardsettingforprogramswithvideo.Thisdecodingisbasedonthe
originalProLogicdecodingscheme,butwiththesingleSurroundchannelseparatedinto
LeftandRightSurroundchannels.
MusicmodeisthemostversatilefeatureofProLogicII.ThesettingsonthePanorama,
Dimension,andCenterWidthmenuscanhelpaconsumermakeastereo(Lo/Ro)
recordingintoonethattakesadvantageofamultichannellisteningenvironment.
Particularlyattractiveforautomotiveentertainmentsystems,thiscanbeusedinhome
theatersaswell.
ProLogicistheProLogicIIsystemreproductionoftheoriginalProLogicdecoding
system.BecauseconsumerdecodersnowofferProLogicIIasthedefaultDolbySurround
decodingsystem,thisemulationmodeisavailabletoreproducetheoriginalProLogic
decodingiftheconsumerwishestohearit.(This optionisnotavailableonallconsumer
decodersmadewithProLogicII.)
Matrixisprimarilyforradioreceptionincars.Itisessentiallythesameastheoriginal
passiveDolbySurrounddecoderwithoutthedirectionalsteeringprovidedbyProLogic.
Matrixmodecanalsoenhancemonoprograms,andcanbeusedtotrytocleanupweak
radiosignalsincars.YoucanapplyMatrixtoamonoinputbyselectingtheLo/Ro
downmix,andthenProLogicII.NeitherProLogicIInorProLogicisavailableinamono
downmix.
Figure 4-10
Master Trim Control Figure 4-11 Master Volume Control
Note:Movieistherecommendedmodeforprofessionalmonitoring.Thewiderangeof
possiblechoicesinMusicmodemakeittoocomplexandunpredictableto
emulate.