TC Electronic SYSTEM 6000 MKII Algorithm Manual

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unwrAP HD
UnWrap HD
Professional Stereo to 5.1 Up-conversion
In a perfect world, all audio recorded over the last fifty
yearswouldbeavailableonmulti-tracktapeformulatedto
lastforcenturies.Unfortunately,theworldisnotperfect.
Where source tapes are in a useable condition, the best
waytotakefulladvantageoftheoriginalmaterialis
typically by performing a full remix., ideally producing one
type of master for every target format. However, reasons
can exist for preferring to up-convert instead:
• aclassicmixistoosacredtotouch
• thereisnotenoughtimeorbudgettodoanewmix
• amultitracksourcetapeinabadcondition
• soundeffectshavetobespreadto5.1forcinema
presentation or HD broadcast
• anup-convertedoriginalisrequestedasabenchmark
when remixing
Introduction
UnWrapHDputstheprocessofconvertingfromstereo
to5.1inthehandsofanaudioprofessional–where
itbelongs.Itistheworld’sprimaryhigh-resolution
up-conversion processor, and with its wealth of controls,
UnWrapHDisthedefactostandardinfilm,postand
musicproduction.Thankstorigorousphaseandresolution
preservation in the algorithm, up-converted material may
even be subsequently down-mixed to stereo again with no
sonic penalties. Processing is 48 bit, and sample rates up
to96kHzmaybeused.
UnwrapHDisnotaone-size-fits-allsolution,butprovides
a host of parameters to aid the design of a result faithful
to the original with regards to width, timbre, spaciousness,
foreground/backgrounddiscrimination,andotherimportant
factors. Still, there may be situations where up-conversion
won’tprovideasatisfactoryresult,andwherethe
recommendation would be perform a new mix or forget it.
UnWrapHDcomeswithup-conversionpresetsforthetype
stereo and LtRt program material typically dealt with in
broadcast, film production and music mastering. Presets
arelocatedinFactoryBankF11,decade3-6.
UnWrap™ and UnWrap™ HD
TheoriginalalgorithmwascalledUnWrap,whilethelatest
version with more dialog and envelopment extraction
functionsisnamedUnWrapHD.Presetsgeneratedwith
theoriginalUnWrapapplicationcanbereadusingUnWrap
HD,andstillsoundpreciselylikewhentheywerecreated.
PresetsgeneratedwithUnWrapHD,however,cannotbe
loadedinUnWrap.
UnWrap HD in use
UnWrapHDmeasuresphase,delayandspectral
differences between a pair of stereo channels to create
a5.1result.Fordifferentprogrammaterialtherewillbe
different parameter settings that best represent the original
mix.Fordifferentspeakersetups,thesameistrue.For
instance in film production, Surround arrays produce a
morediffusedsoundthanwhenusingapointsourceITU
R-775speakersetup,sothelevelandspectralbalance
of the presets should not be regarded as set in stone.
Instead,Factorypresetsshouldbeusedasstarting
points. Please familiarize yourself with the controls and
parameter-rangesonknownmaterialandaknown5.1
monitor system before attempting to unwrap new stuff.
Setting up
ThebestpracticeistomonitortheoutputsofUnWrap
HDthroughtheToolbox5.1(e.g.byloadingpreset“5.1
Monitor Matrix”).
Thiswayyoucancheckallspeakersonebyonewithpink
noisefirst,andalsocollapsethe5.1signaltostereoor
monotomakesuretheresultisstillhearable.Tryloading
someoftheUnWrapHDpresets.YoucanA/Btheprocess
bypressingBypassontheUnWrapHDEngine,orcollapse
the signal to stereo again by selecting Stereo format on the
ToolboxEngine,ifitisinserteddownstreamassuggested.
The UnWrap HD algorithm occupies:
@ Normal Sample Rate : 1/4 DSP Resource
@ Double Sample Rate : 2/4 DSP Resource
Algorithm Inputs/Outputs are distributed as follows:
E1 - E4
L
R
L
R
C
LFE
SL
SR
INPUT
OUTPUT
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TC Electronic SYSTEM 6000 MKII Specifications

General

Brand	TC Electronic
Model	SYSTEM 6000 MKII
Category	Computer Hardware
Language	English