User Manual

Effects and Effect Mode
Effects Parameters
9-19
Flanger
Flangingistheprocessofaddingorsubtractingasignalwithatime‐displacedreplicaofitself,
whichresultsinaseriesofnotchesinthefrequencyspectrum,generallyreferredtoasacomb
filter.InthePC3K,theflangerisamulti‐tapdelayline,all(butone)ofwhose
tapscanhavetheir
lengthsmodulatedupanddownbyalowfrequencyoscillator(LFO).TherateoftheLFOis
expressedinTempo.
StatDlyLvl(StaticDelayLevel)isthelevelofthefirst,non‐movingtap .Negativevaluesinvert
thepolarityofthetap.Therangeis‐100to100%;
0%turnsthetapoff.
DlyCrsandDlyFinarethe coarseandfinelengthcontrolsfortheStaticdelay(StatDly…)and
fortheminimumvalueofthemovingdelays(Dlyn…).Thecoarserangeis0to228ms,andthe
finerangeadjuststhecoarserangeinsamples
(=1/48,000sec=20.8μsec)from‐127to127.
XcursCrsandXcursFindeterminehowfartheLFO‐modulateddelaytapscanmovefromthe
centeroftheirranges.ThetotalrangeoftheLFOsweepistwicetheexcursion.Iftheexcursionis
setto0,theLFO
doesnotmoveandthetapbehaveslikeasimpledelaylinesettotheminimum
delay.Thecoarserangeis0to228ms;therange0to5msismosteffectiveforflanging.Thefine
rangeadjuststhecoarserangeinsamplesfrom‐127to127.
Quantize
Thiseffectproducesdigitaldistortionknownasquantizationnoise,bylimitingthenumberof
bitsavailabletothesignal.Seeeffect329“Aliaser”.
DynamRange(dynamicrange)controlshowmanybitstoremovefromthesignaldatawords.
Thelowerthelevel,thegreaterthe distortion.At0dBthehottestof
signalswilltogglebetween
onlytwoquantizationlevels,therebyproducingasquarewave.Every6dBaddeddoublesthe
numberofquantizationlevels,reducingthenoiseandgettingclosertotheoriginalsignal.Ifthe
signalhasalotofheadroom(availablesignallevelbeforedigitalclipping),thennotall
quantization
levelswillbereached.Rangeis0to144dB.
Headroomsetstheavailablesignallevelbeforedigitalclipping.Settingthisproperlyprevents
thesignalfromgettingtooloudatlowlevelsofDynamRange.Youwanttohaveitmatchthe
amountoflevelstillavailableabovetheinputsignal:this
isdonebyfindingtheDynamRange
levelatwhichthesignalstartsgettinglouder,andsettingHeadroomtomatchtheDynamRange
value.Rangeis0to144dB.
DCOffsetaddsapositiveDCOffsettotheinputsignal,whichallowsyoutoaltertheposition
wheredigitalzeroiswith
respecttoyoursignal.AtlowDynamRangesettings,thiscancause
theoutputto“sputter”.RangeisOff/‐79.0to0.0dB.
LaserVerb
LaserVerbisatypeofreverbwhichproducesadelayedtrainofcloselyspacedreflections,or
impulses.Astimepasses,thespacingbetweentheimpulsesgetswider,whichcreatesa
discerniblebuzzypitchthatgetslowerasthespacingincreases.Thesignalcanbefedbackinto
itselftoextendthe
effect.
DlyCoarseistheoveralldelaylength,whichcontrolsthedurationordecaytime.0.5secisa
goodstartingpoint.Rangeis0to1.3secondsinthe2DSPunitversionoftheeffect,and0to2
secondsinthe3DSPunitversion.
DlyFineadjusts
thedelaywitharesolutiondownto0.2ms.Rangeis‐20.0to20.0ms.
Spacingdeterminesthestartingpitchofthedescendingbuzzandhowfastitdescends,by
settingtheinitialseparationofimpulsesandthesubsequentrateofincreasingimpul se