Kurzweil PC3K Series - Distortion

Effects
Distortion
9-19
Triggeristheinput‐signalthresholdatwhichtheenvelopedetectortriggers.Rangeis‐79to
0dB.
Retriggeristheinput‐signalthresholdatwhichtheenvelopedetectorresets,sothatitcan
triggeragain.ThisparameterisonlyusefulwhenitissetbelowthevalueofTrigger.Range
is
from‐79to0dB.
EnvRateistheenvelopedetectordecayrate.Thiscanbeusedtopreventfalsetriggering.When
thesignalenvelopefallsbelowtheretriggerlevel,thefiltercanbetriggeredagainwhenthe
signalrisesabovethetriggerlevel.Sincetheinputsignalcanfluctu ate
rapidly,itisnecessaryto
adjusttherateatwhichthesignalenvelopecanfalltotheretriggerlevel.Therangeis0to300.0
dB/sec.
RelRateisthedownwardslew(release)rateofthetriggeredenvelopegenerator.Therangeis0
to300.0dB/sec.
SmthRateslowsdowntheenvelope
follower.Ifsetlowerthanthereleaserate,itwilldominate
it.Youcanalsousethesmoothingratetolengthentheattackoftheinternalenvelope.Therange 
is0to300.0dB/sec.
LFO Filter
TheLFOfilteriscontinuouslysweptbetweentworesonantfrequenciesoveraperiodoftime.
TheLFOfrequency,expressedinBPMandbeats,canbefixedorsettofollowSystemtempo.
(SeeChapter4forinformationabouttempocontrolofPC3Kparameters.)
MinFreqandMaxFreqarethelow
andhighlimitsoftheresonantfrequencyasthefilteris
swept.YoucansettheMinFreqhigherthantheMaxFreq,inwhichcasethefilterwillsweep
“upsidedown”relativetothecontrollingclock.Therangeforbothis16to8372Hz.
LFOShapeisthewaveform
typefortheLFO.ChoicesareSine,Saw+,Saw‐,Pulse,andTri.
LFOPlsWid(PulseWidth).WhentheLFOShapeissettoPulse,thissetsthe pulsewidthasa
percentageofthewaveformperiod.Whenthewidthissetto50%,theresultisasquarewave.
This
parameterhasnoeffectifotherwaveformtypesarechosen.Rangeis0to100%.
LFOSmoothsmooths(removesthehigherharmonicsfrom)theSaw+,Saw‐,andPulse
waveforms.ASawtoothwavebecomesmorelikeatrianglewave,and aPulsewavebecomes
morelikeasinewave.Rangeis
0to100%.
Distortion
DistortionalgorithmsonthePC3Kmayalsoincludeaparametricequalizeroracabinet
simulator.
DistDriveappliesaboosttotheinputsignaltooverdrivethedistortionalgorithmintosoft
clipping.Thiswilltendtomakethesignalveryloud,soyoumayhavetoreducetheOutGainas
thisparameterisincreased.Rangeis0to96dB.
Warmthisalowpassfilterinthedistortioncontrolpath.Thisfiltermaybeusedtoreducesome
oftheharshnessofsomedistortionsettingswithoutreducingthebandwidthofthesignal.
Rangeis16to25088Hz.
Highpassallowsyouto
reducethebasscontentofthedistortioncontentinthesmaller
distortionalgorithmsthatdon’thavetrueparametricEQ.Rangeis16to25088Hz.
CabPresetselectsfromeightcabinetsimulationswhichhavebeencreatedbasedon
measurementsofrealguitaramplifiercabinets.Thepresetsare:Basic,Lead12,2x12,
Open12,
Open10,4x12,Hot2x12,andHot12.