Korg 61key, 73key, 88key Modulating the filters

Detailed Editing with Programs Using Filters
39
Resonance
Resonanceemphasizesthefrequenciesaroundthe
cutofffrequency,asshowninthediagrambelow.
Whenthisissetto0,thereisnoemphasis,and
frequenciesbeyondthecutoffwillsimplydiminish
smoothly.
Atmediumsettings,theresonancewillalterthetimbre
ofthefilter,makingitsoundmorenasal,ormore
extreme.Atveryhighsettings,theresonancecanbe
heardasaseparate,whistlingpitch.
Tomaketheresonancetrackthekeyboardpitch,please
see“KeyFollow”onpage29ofthePa rameterGuide.
Modulating the filters
Youcanmodulatethefiltercutofffrequencyusingthe
FilterEG,theLFOs,keyboardtracking,andother
built‐inandMIDIcontrollers.Thisisa��greatwayto
addarichvarietyoftonalchangetothesound.
Filter EG
TheFilterEGisamulti‐stageenvelope,whichyoucan
usetomodulatethefilteraswellasotherProgram
parameters.TheEGitselfissetupontheEGtab;the
waythatitaffectsthefiltersiscontrolledbythe
parametersdescribedbelow,ontheFilter1/2–
Modulationpage:
TheIntensitytoAandIntensitytoBsettingscontrol
thebasicamountofEGmodulationforfilter
frequenciesAandB,respectively,beforeother
modulation.
TheVelocitytoAandVelocitytoBsettingsletyouuse
velocitytocontroltheamountofEGmodulation.
TheAMSsettingselectsanAMSmodulationsourceto
scaletheamountoftheFilterEGappliedtoFiltersA
andB.ThetwofiltersshareasingleAMSsource,with
separateintensityIntoAortoBsettings.
LFO modulation
YoucanmodulatethefilterviaLFO1,LFO2,andthe
CommonLFO.Amongotherapplications,LFO
modulationofthefiltercanproducetheclassic“auto‐
wah”effect.
TheFilter1/2–LFOMod.pageletsyousetupthe
followingparametersseparatelyforeachLFO:
IntensitytoAandIntensitytoBspecifyhowmuch
theLFOchangesthetone.
JS‐YIntensitytoAandJS‐YIntensitytoBspecifythe
depthofthewaheffectproducedbytheLFOwhenthe
joystickismovedtowardyourself,orwhenCC#2is
received.
TheAMSsettingselectsanAMSmodulationsourceto
scaletheamountoftheLFOappliedtoFiltersAandB.
ThetwofiltersshareasingleAMSsource,with
separateintensitysettings.
ForexampleifAMSissettoSW1:CC#80,turningSW1
onwillapplyanauto‐waheffect(seepage37).
Keyboard Track
Mostacousticinstrumentsgetbrighterasyouplay
higherpitches.Atitsmostbasicapplication,keyboard
trackingre‐createsthiseffectbyincreasingthecutoff
frequencyofalowpassfilterasyouplayhigheronthe
keyboard.Usually,someamountofkeytrackingis
necessaryinordertomakethetimbreconsistentacross
theentirerange.
TheKROMEkeyboardtrackingcanalsobemuchmore
complex,sinceitallowsyoutocreatedifferentratesof
changeoveruptofourdifferentpartsofthekeyboard.
Forinstance,youcan:
• Makethefiltercutofffrequencyincreasevery
quicklyoverthemiddleofthekeyboard,andthen
openmoreslowly–ornotatall–inthehigher
octaves.
• Makethecutofffrequencyincreaseasyouplay
loweronthekeyboard.
• Createabruptchangesatcertainkeys,forsplit‐like
effects.
How Key Track works: Keys and Ramps
Thekeyboardtrackingworksbycreatingfourramps,
orslopes,betweenfivekeysonthekeyboard.
Fordetails,pleasesee“Howitworks:Keysand
Ramps”onpage28ofthePar ameterGuide.
Low resonance
High resonance