Kurzweil PC3K Series - Ring Modulation; Stereo Simulation

Effects
Ring Modulation
9-23
Pitch.Thefundamentalpitchimposedupontheinput,inMIDInotenumbersfromC‐1toG9.
PtchOffstisanoffsetfromthepitchfrequencyinsemitones,from‐12.0to12.0.Itcanbeuseful
toassignpitchbend,aribbon,oranothercontinuouscontrollertothisparameterthrougha

MOD.
OddWts,PairWts,QuartrWts,HalfWtsareparametersthatcontroltheshapeofthe
frequencyresponseofPitcher.Anexactdescriptionofwhateachonedoesis,unfortunately,
impossible,sincethereisagreatdealofinteractionbetweenthem.Formoreinformationand
examples,seethe
KSP8AlgorithmReferenceGuide.
Ring Modulation
Ringmodulationmultipliestwosignals(the“carrier”andthe“modulator”)togethertoproduce
unusual,oftennon‐harmonic,overtones.TheRingModulatoralgorithminthePC3Khastwo
modes:“L*R”inwhichtwomonosignalsaremodulatedtogether;and“Osc”,inwhichthe
inputisstereo,anditismodulated
withthesumoffivewaveformsthataregeneratedfrom
oscillatorswithinthealgorithmitself.Fouroftheseoscillatorsaresine waves,whileone
(Oscillator1)offersaselectionofwaveforms.
Wet/Dry .Whenthealgorithmisin“L*R”mode,thiscontrolshowmuchoftheleftsignalonlyis
passeddry
(therightsignalisn’tpasseddryatall).
ModModeselectsbetweenthetwomodes.
Osc1LvlisthelevelofOscillator1,from0to100%.
Osc1FreqisthefrequencyofOscillator1,from16to25088Hz.
Osc1ShapeisthewaveshapeofOscillator1,selectablefromSine,Saw+,
Saw‐,Pulse,andTri.
Osc1PlsWid(PulseWidth).WhenOsc1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%.
Osc1Smooth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%.
Theotherfouroscillators,Sine2throughSine5,each
haveLvlandFreqcontrols.
Stereo Simulation
TheMonotoStereoalgorithmconvertsamonauralinputtosimulatedstereooutput.
InSelectselectstheinputsignaltobe“stereo‐ized”.ItcanbeLeft,Right,orboth:(L+R)/2.
CenterGainisthelevelofthesummedleftandrightchannels.RangeisOff/‐79.0to24.0dB.
DiffGainis
thelevelofthedifferencesignalproduced,whichisthespatialcomponentofthe
stereosignal.RangeisOff/‐79.0to24.0dB.
DiffBassGcontrolsthegainofabass‐shelffilteronthedifferencesignal.Byboostingthelow
frequencycomponentsofthedifferencesignal,youcanincreasethesense
ofacoustic
envelopment.Rangeis‐79.0to24.0dB.
DiffBassFisthetransitionfrequencyforthebass‐shelffrequency.Rangeis16to25088Hz.