Inc. Program Optimizer Manual

Dolby
®
DP600 Program Optimizer Manual 1
Chapter 1
Introduction
WelcometoDolby
®
file‐basedaudio!
TheDolbyDP600ProgramOptimizerisadirectresultofDolbyLaboratories’continued
leadershipinthedevelopmentofinnovativebroadcasttechnologies.Thisinnovativetool
isdesignedspecificallyforcable,satellite,IPTV,andterrestrialTVbroadcastersthat
employafile‐basedinfrastructureandworkflow.TheDP600includesthe
world’sfirst
intelligentaudioanalysisandautomatedloudnessnorma lizationengineformanyofthe
mostcommonbroadcastmediafileandaudioformatsinusetoday.Inaddition,itoffers
DolbyE,DolbyDigital,andDolbyDigitalPlusencoding,decoding,andtranscoding,allin
anopenarchitecture.
UsingtheDP600,broadcasterscan
providetheirviewerswithaconsistentaudio
experienceandreduceloudnesscomplaintsacrossalloftheirprograms,channels,and
networks.ExpandingupontheuniqueDialogueIntelligence™technologydevelopedfor
theDolbyLM100BroadcastLoudnessMeter,theDP600normalizestheloudnessofaudio
programswithnoimpactontheiroriginaldynamic
range.
TheDP600automatespreviouslylengthyquality‐controlprocesses,and performsthemin
fasterthan realtime.ItautomaticallyanalyzesaudiobitstreamscodedinDolbyE,Dolby
Digital,andDolbyDigitalPlus,foranychannelconfigurationandloudnesslevel.It
intelligentlyandautomaticallysets,validates,andcorrectsthedialoguenormalization
(dialnorm)
audiometadataparameterwithouttheneedfordecodingandreencoding—
ensuringaproperlyencodedbitstream.TheDP600alsoprovidesintelligentand automatic
speech‐basedloudnessnormalizationforbothPCMau dio andMPEG‐1LIIaudio.
Forcompressedaudioformatsthatincludemetadata(forexample,DolbyE,DolbyDigital,
andDolbyDigitalPlus),
theDolbyDP600canautomaticallysetorcorrectthedialnorm
parameter(seeFigure 1‐1).Foraudioformatsthatdonotincludemetadata,theDolby
DP600canautomaticallysetorcorrectthedialnormparameterbyreferencinga
user‐definedtargetlevel(seeFigure 1‐2).
TheModelDP600‐Caddsfaster‐
than‐real‐timefile‐basedencodinganddecodingofDolby
DigitalandDolbyDigitalPlus,andthefirstfile‐basedimplementationofDolbyE.In
addition,thismodelenablesmultichannelaudiotranscodingofDolbyEtoDolbyDigital
orDolbyDigitalPlusformats.Italsoprovidesauniquehigh‐quality,single
‐stepDolby
DigitaltoDolbyDigitalPlustranscoderthatpreservesthemetadataandminimizes
tandemcodinglosses.Thisallowstheaudiofromexistingmediaarchivestobeconverted
tonext‐generationbroadcastformats.