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2 Dolby
®
DP570 Multichannel Audio Tool User’s Manual
Overview Principles of Operation
level,ProLogicdecoding,andtheotherfunctionscontrolledbymetadataandexperienced
byconsumers.TheDP570’sconvenientanduser‐friendlyinterfacesimplifiesmultichannel
audioproductionandmastering.
Figure 1‐1showstheaudiopathoftheDP570brokenintomajorfunctionalblocks.Features
thatcontroltheoperationofablockare
connectedtoitbyadottedline.
DigitalaudioinputontheDP570isviafourfemaleBNCconnectors,allowingatotalof
eightchannels.TheemulatorsectionoftheDP570,liketheDP571,requirestheinput
channelassignmenttoconformtoafixedSMPTE320Mdefinitionbasedupontheprogram
configurationselected.Sincepreviouslyrecordedmaterialmayarriveinformatsthatdo
notmatchthechosenprogramconfiguration,theDP570providestheabilitytoreroutethe
inputchannelstomatchtheexpectedconfiguration,allowingotherequipmenttobesent
thecorrectchannelassignment.
Theemulatorsectionprovidesthebulkofthe
audioprocessing,includingapplicationof
metadata,downmixing,andProLogicdecoding.Allpossiblelisteningoptionsallowedby
consumerdecodersareprovidedintheemulator(fromhigh‐endhometheaterstomono
TVsets).Notethattheinputstotheemulatorsectionmaybemultiple,unrelatedchannels
buttheoutputsarereferred
toasspeakerchannelsandrepresentonlytheactiveprogram
(theprogramcurrentlybeingworkedonormonitored).Oncetheinputchannel
configurationhasbeenset,theselectedactiveprogramappearsintheappropriatespeaker
channelsirrespectiveoftheprogramʹsappearanceontheinputchannels,thereby
simplifyinginstallationand
integrationintoexistingmultichannelmonitoring
environments.
Theemulatorsectionisfollowedbythebassmanagementsection,whichprovidesthe
abilitytoroutelowfrequenciestotheappropriatespeakerchannels.Theoutputofthebass
managementsectionissenttothedigitalaudio(emulator)outputsaswellastheanalog
monitorsection
(iffitted).