- Dolby Multichannel Audio Tool User's Manual

2 Dolby
®
DP570 Multichannel Audio Tool User’s Manual
Overview
level,ProLogicdecoding,andtheotherfunctionscontrolledbymetadataandexperienced
byconsum ers.TheDP570’sconvenientanduser‐friendlyinterfacesimplifiesmultichannel
audioproductionandmastering.
Figure 1‐1
showstheaudiopathoftheDP570brokenintomajorfunctionalblocks.Features
thatcontroltheoperationofablockareconnectedtoitbyadottedline.
DigitalaudioinputontheDP570isviafourfemaleBNCconnectors,allowingatotalof
eightchannels.Theemulatorsectionofthe
DP570,liketheDP571,requirestheinput
channelassignmenttoconformtoafixedSMPTE320Mdefinitionbasedupontheprogram
configurationselected.Sincepreviouslyrecordedmaterialmayarriveinformatsthatdo
notmatchthechosenprogramconfiguration,theDP570providestheabilitytoreroutethe
inputchannelstomatch
theexpectedconfiguration,allowingotherequipmenttobesent
thecorrectchannelassignment.
Theemulatorsectionprovidesthebulkoftheaudioprocessing,includingapplicationof
metadata,downmixing,andProLogicdecoding.Allpossiblelisteningoptionsallowedby
consumerdecodersareprovidedintheemulator(fromhigh‐endhometheatersto
mono
TVsets).Notethattheinputstotheemulatorsectionmaybemultiple,unrelatedchannels
buttheoutputsarereferredtoasspeakerchannelsandrepresentonlytheactiveprogram
(theprogramcurrentlybeingworkedonormonitored).Oncetheinputchannel
configurationhasbeenset,theselectedactive
programappearsintheappropriatespeaker
channelsirrespectiveoftheprogramʹsappearanceontheinputchannels,thereby
simplifyinginstallationandintegrationintoexistingmultichannelmonitoring
environments.
Theemulatorsectionisfollowedbythebassmanagementsection,whichprovidesthe
abilitytoroutelowfrequenciestotheappropriatespeakerchannels.The
outputofthebass
managementsectionissenttothedigitalaudio(emulator)outputsaswellastheanalog
monitorsection(iffitted).