Korg 61key Electronic Keyboard User Manual


 
Detailed Editing with Programs Using Filters
39
Resonance
Resonanceemphasizesthefrequenciesaroundthe
cutofffrequency,asshowninthediagrambelow.
Whenthisissetto0,thereisnoemphasis,and
frequenciesbeyondthecutoffwillsimplydiminish
smoothly.
Atmediumsettings,theresonancewillalterthetimbre
ofthefilter,makingitsoundmorenasal,ormore
extreme.Atveryhighsettings,theresonancecanbe
heardasaseparate,whistlingpitch.
Tomaketheresonancetrackthekeyboardpitch,please
see“KeyFollow”onpage 29oftheParameterGuide.
Modulating the filters
Youcanmodulatethefiltercutofffrequencyusingthe
FilterEG,theLFOs,keyboardtracking,andother
builtinandMIDIcontrollers.Thisisagreatwayto
addarichvarietyoftonalchangetothesound.
Filter EG
TheFilterEGisamultistageenvelope,whichyoucan
usetomodulatethefilteraswellasotherProgram
parameters.TheEGitselfissetupontheEGtab;the
waythatitaffectsthefiltersiscontrolledbythe
parametersdescribedbelow,ontheFilter1/2–
Modulationpage:
TheIntensit
ytoAandIntensitytoBsettingscontrol
thebasicamountofEGmodulationforf
ilter
frequenciesAandB,respectively,beforeother
modulation.
TheVelocitytoAandVelocitytoBsettingsletyouuse
velocitytocontroltheamountofEGmodulation.
TheAMSsettingselectsanAMSmodulationsourceto
scaletheamountoftheFilterEGappliedtoFiltersA
andB.Thetwofiltersshareasi
ngleAMSsource,with
separateintensityIntoAortoBsettings.
LFO modulation
YoucanmodulatethefilterviaLFO1,LFO2,andthe
CommonLFO.Amongotherapplications,LFO
modulationofthefiltercanproducetheclassic“auto
wah”effect.
TheFilter1/2–LFOMod.pageletsyousetupthe
followingparametersseparatelyforeachLFO:
IntensitytoAandIntensitytoBspecifyhowmuch
theLFOchangesthetone.
JSYIntensitytoAandJSYIntensitytoBspecifythe
depthofthewaheffectproducedbytheLFOwhenthe
joystickismove
dtowardyourself,orwhenCC#2is
received.
TheAMSsettingselectsanAMSmodulationsourceto
scaletheamountoftheLFOappliedtoFiltersAandB.
ThetwofiltersshareasingleAM
Ssource,with
separateintensitysettings.
ForexampleifAMSissettoSW1:CC#80,turningSW1
onwillapplyanautowaheffect(seepage 37).
Keyboard Track
Mostacousticinstrumentsgetbrighterasyouplay
higherpitches.Atitsmostbasicapplication,keyboard
trackingrecreatesthiseffectbyincreasingthecutoff
frequencyofalowpassfilterasyouplayhigheronthe
keyboard.Usually,someamountofkeytrackingis
necessaryinordertomakethetimbreconsistentacross
theentirerang
e.
TheKROMEkeyboardtrackingcanalsobemuchmore
complex,sinceitallowsyoutocreat
edifferentratesof
changeoveruptofourdifferentpartsofthekeyboard.
Forinstance,youcan:
Makethefiltercutofffrequencyincreasevery
quicklyoverthemiddleofthekeyboard,andthen
openmoreslowly–ornotatall–inthehigher
octaves.
Makethecutofffrequencyincreaseasyouplay
loweronthekeyboard.
Createabruptchangesatcertainkeys,forsplitlike
effects.
How Key Track works: Keys and Ramps
Thekeyboardtrackingworksbycreatingfourramps,
orslopes,betweenfivekeysonthekeyboard.
Fordetails,pleasesee“Howitworks:Keysand
Ramps”onpage 28oftheParameterGuide.
Low resonance
High resonance