Kurzweil PC3K8 - Setting KVA Oscillator Type

6-54
Program Mode
Editing VAST Programs With KVA Oscillators
keymaps.Foreachoscillator,itscoarsepitchparameterisnamedbyanabbreviationofthe
oscillatornamefollowedby“Pch.”Forexample,thecoarsepitchparameterforasawwave
oscillatorwillbecalledSawPch.OntheDSPCTLsubpageforanyoscillatorPch.parameter,
youcanadjustfine
pitchbycentsandHertz,aswellasKeyTrkandVelTrksettingsforpitch.
Note:Besuretodifferentiatebetweenthedifferentpitchparameters,eachusedeitheronlyforkeymapsor
onlyforKVAoscillators.ThePitchparameteronthetopleftoftheDSPCTLandDSPMODpagesalways
appearsin
VA S T programsbutonlyaffectsthepitchofkeymaps.IfaKVAoscillatorisbeingused,this
Pitchparameterwillhavenoaffectonthelayer’spitch,inwhichcasetheoscillatorPch.parameter
describedabovemustbeusedtocontrolthepitchoftheoscillator.
Setting KVA Oscillator Type
ThePC3Kcomeswith19DifferentKVAoscillators.Thereare11highqualityanti‐aliased
oscillators(freeofdigitalartifacts,)and8oscillatorsthatexhibitsomealiasing(digitalartifacts)
inthehigheroctaves.Theanti‐aliasedoscillatorsuseupmoreDSPresourcesthantheoneswith
aliasing,buttheimprovementin
soundqualityisquite noticeable.Westronglyrecommend
usingtheanti‐aliasedoscillatorsformostapplications.
ThetablesbelowlistKVAoscillatorsbytypeandfunctionblocksize.Beforesettinganoscillator,
youmustchooseanalgorithmwhichincludesablockthatmatchestheblocksizeforthe
oscillatorthatyou
wishtouse.SeeTheAlgorithm(ALG)Page on page 6 ‐27andAlgorithm
Basics on page 6‐13formoreonselectingalgorithms.Onceyouhavepickedanalgorithmwith
thedesiredblocksize,highlighttheblockandusethealphawheeltoscrollthroughthe
availablefunctionsuntilyoufindthedesiredoscillator.
The
SYNCSQUAREoscillatorisan8blockoscillatorthatrequirestheuseoftwolayers(4
blockseach)andtheAltInputfeatureofcascademode.Seebelowfordetailsonsettingupthe
SyncSquareoscillator.
Note:Ifyouputmorethanoneoscillatorinanalgorithm,youwillonly
heartheoutputofthelast
oscillatorinthealgorithm,unlessanalgorithmisusedtoroutetheearlieroscillatoraroundthelast
oscillatorandintoaMIXfunctionblock,orifthelastoscillatorprocessesitsaudio input.

Anti-Aliased Oscillators
Size Name/Type
1 Block LPNOIZ (noise + low pass
filter)
2 Blocks SINE
SINE+
SAW
RES NOISE (noise + low pass
filter with resonance)
SQUARE
3 Blocks PWM (Pulse Width Modulation)
4 Blocks SYNC SAW
SUPER SAW
TRIPLE SAW
8 Blocks SYNC SQUARE (master) >>,
>>SYNC SQUARE (slave)
(4 blocks each)
Aliased Oscillators
Size Name/Type
1 Block SINE
SAW
TRI
SQUARE
NOISE
SW+SHP (Sawtooth + Shaper)
2 Blocks SHAPED SAW
PWM (Pulse Width Modulation)