Kurzweil PC3K Series - Vibrato;Chorus

Effects
Rotating Speakers
9-21
LoResonateandHiResonatearesimulationsofcabinetresonantmodesexpressedasa
percentage.Forrealism,youshoulduseverylowsettings.Therangeis0to10 0%.
LoResDlyandHiResDlyarethenumberofsamplesofdelayineachresonatorcircuitin
additiontotherotationexcursion
delay.Therangeis10to2550samples.
LoResXcursandHiResXcursarethenumberofsamplesofdelaytosweepthroughthe
resonatorattherotationrateofeachrotatingspeaker.Therangeis0to510samples.
ResH/LPhssetstherelativephasesofthehighandlowresonators.Theanglevalue
indegreesis
somewhatarbitraryandyoucanexpecttheeffectofthisparametertoberathersubtle.The
rangeis0to360.0degrees.
MicAngleistheangleofthevirtualmicrophonesindegreesfromthe“front”oftherotating
speaker.Fortheleftmicrophonetheangleincreasesclockwise
(whenviewedfromthetop),
whilefortherightmicrophonetheangleincreasescounter‐clockwise.AssigningaMODtothis
parametershouldbedonewithcaution:real‐timeadjustmentstoitwillresultinlargesample
skips,whichwillcauseclicksinthesignalpassingthrough.Therangeis0
to360.0degrees.(In 
Distort+Rotaryonly.)
Thefollowingparametersrelatetorotationspeed:
Speedsetstherotatingspeakerstorunateithertheslowrateorthefastrate.
Brake,whensettoʺOnʺ,slowstherotatingspeakerstoahalt.
LoMode,intheʺNormalʺsetting,willgive
youfullcontrolofthelowfrequencyspeakerwith
theSpeedparameter.TheʺNoAccelʺsettingwillholdthelowfrequencyspeakerattheslow
speed,andtheSpeedparameterwillhavenoeffectonitsspeed,thoughBrakewillstillwork.In
theʺStoppedʺposition,thelowfrequencyspeakerwill
notspinatall.
LoSlowandHiSlowaretherotationratesinhertz(Hz)ofthespeakerswhenSpeedissetto
ʺSlowʺ.
LoFastandHiFastaretherotationrateinhertz(Hz)ofthespeakerswhenSpeedissettoʺFastʺ.
LoSlow>FstandHiSlow>Fstare
thetimesforthespeakerstoacceleratefromtheslowspeedto
thefastspeed.
LoFst>SlowandHiFst>Slowarethetimesforthespeakertodeceleratefromthefastspeedto
theslowspeed.
LoAccelCrvandHiAccelCrvaretheshapesoftheaccelerationcurvesforthespeakers.þ0%isa
constantacceleration.
Positivevaluescausethespeakertospeedupslowlyatfirstthenquickly
reachthefastrate.Negativevaluescauseaquickinitialspeed‐upthenslowlysettleintothefast
speed.Ifsettoalownegativevalue,itwillovershoot.
LoSpinDirandHiSpinDirarethedirectionsofrotation
ofthespeakers.Thechoiceisclockwise
(CW)orcounter‐clockwise(CCW).
Vibrato/Chorus
TheVibrato/Chorusalgorithm(andalsotheKB3Effectsalgorithm)simulatesthevibratoand
choruseffectsonatonewheelorgan,andisusedinconjunctionwiththeRotarySpeaker.Ithas
severaluniqueparameters:
VibChInOutisanin/outswitchfortheVibrato/Choruseffect.
Vib/ChoristhetypeofVibrato/Choruseffecttobe
used.Thechoicesarefromthreevibratos,
“V1”,“V2”,“V3”, orthreechoruses,“C1”,“C2”,“C3”.