TC Electronic SYSTEM 6000 MKII Algorithm Manual

86
MAssEnburG EQ
Introduction
More than one flavor of EQ
InrecognitionofGeorgeMassenburg’sgreatsenseof
audio and strong influence on previous TC processors, the
newMDWHiResEQisofferedasanlicensedalgorithm
option. The MDW design complements the TC alternatives
and therefore offers the user a choice between several
desirableEQflavors,eachwithspecificadvantages.Allof
them have processing capabilities worthy of handling any
critical signalpath.
System 6000 and MDW HiRes EQ
ThecombinationSystem6000/MDWHiResEQconstitutes
a 48 bit precision signal path from Input to Output. It comes
in2and6channelconfigurationswithflexiblelinkingand
absolute/relativerealtimeadjustmentproperties.The6
channel version features 6 identical processing channels
makingitequallysuitableforcontrolling5.1and6.0
signals.
Qualityequalizationisnotonlyaquestionofafinefilter
designwithhighbitresolution.Precisionintimingisjustas
important, as is conversion from Analog to Digital and vice
versa.Thehighresolutionrouting,extremelylowjitterand
pristine conversion environment provided by System 6000
bringoutthebestqualitiesinGeorge’sdigitalEQdesign.
Sample Rate
IftheSystemrateissetat44.1or48kHz,thesignalis
up-sampled to double rate, processed and down-sampled
toSystemrate.Thisapproachisonewayofmimicking
morepreciselythebehaviorofanalogEQsplusreducing
alias distortion.
TheEQcanalsobeoperatedat88.2or96kHz.Athigh
System rates, up/down sampling is bypassed, providing a
bit transparent signalpath at unity gain.
Bands and Filters
TheEQsfeature5parametricbandsperchannel.Outer
bands can be configured as shelving or 2nd order filters
(Butterworth). Band 1 filters can be switched between 2nd
and 4th order.
Allfivebandscoverthecompletefrequencyrange.Each
parametric or shelving band is capable of cut/boost over a
+/-25dBrange.
Channel Linking and operational Hints
In the 2 channel version, equalization of stereo material
shouldinitiallybeperformedinAbsolutelinkmode,i.e.
changes applied to Left channel will also be applied to
Right.Ifitisindicatedtomakedifferentadjustments
toLandR,thelinkisreleaseduntilthedesired
differences have been established. Now a Relative
linkcanbeenabled,preservingtheadjustmentoff-sets
betweenchannels,butnothavingtoadjustbothofthem
permanently.
In the 6 channel version, up to three different Absolute
linksmaybeset.Beforelinkchannelscanbechanged,
theLinkEnablekeyhastobeactive.Whenalinkis
established, the settings of the lowest channel number
in the group will be copied to the rest. The settings of all
channelsinalinkgroupwillremainthesameaslongas
thechannelsarelinked.Whenthedesirednumberoflinks
havebeenestablished,itisadvisabletoturnofftheLink
Enablefunctiontopreventagainstaccidentaleditingand
copying.Linkingofallchannelsmayserveasaquickway
to achieve an identical initial setting of all channels.
Latency
At44.1and48kHzsampling,delay(latency)is37samples,
whichequals0.84msat44.1kHzand0.77msat48kHz.
At88.2and96kHzsampling,delay(latency)is10samples,
whichequals0.11msat88.2kHzand0.10msat96kHz.
Notes
Because of the upsampling approach, latency is higher
atlowrates.Asareferencetotherealworld,it’suseful
to remember that 1 ms of delay equals one foot of extra
distance between source and microphone. 3 ms of delay
equals one meter of extra distance between source and
microphone.
The MDW Hi Res EQ 2 channel algorithm occupies:
@ Normal Sample Rate : 1/4 DSP Resource
@ Double Sample Rate : 1/4 DSP Resource
Algorithm Inputs/Outputs are distributed as follows:
E1 - E4
L
R
L
R
INPUT
OUTPUT
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The MDW Hi Res EQ 6 channel algorithm occupies:
@ Normal Sample Rate : 3/4 DSP Resource
@ Double Sample Rate : 3/4 DSP Resource
Algorithm Inputs/Outputs are distributed as follows:
E1 - E4
1
2
3
4
5
6
1
2
3
4
5
6
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