Kurzweil PC3K Series - Timbre Shift; Playback Mode; Alternative Controller (Altcontrol); Alternative Switch (Altcontrol and Altmethod)

Program Mode
The KEYMAP Page
6-21
Timbre Shift
Thisparameterworksonlyonmulti‐samplekeymaps,andchangestherootselectionforeach
keyyouplay.Withthisparameteryoucanradicallyalterthecurrentlayer’stimbre(basicsound
characteristics).Thenatureofthechangedependsonthetimbreitself,sothisparametercallsfor
experimentation.Basically,timbreshifting
changesanote’stimbrebyimposingdifferent
harmonicqualitiesontothenote.Atimbre‐shiftednoteretainsitsoriginalpitch,butits
harmonicsarethoseofthesametimbreatahigherorlowerpitch.Positivevaluesforthis
parametertendtobrightenasound,whilenegativevaluesdarken.
Here’san
example.Ifyoushiftthetimbreup4semitones,thenplaying C4willresultinthepitch
C4,butwillactuallyplaythesamplenormallyassignedtoG
#
3,andshiftitspitchupfour
semitones.Thiswillincreasetheplaybackrateofthe sample,soalthoughthepitchremains
normal,thetimbreisbrighter.You’dgetthesameeffectbysettingtheXposeparameteronthe
KEYMAPpageto‐4semitones,thensettingtheAdjuston
thePITCHpageto+4semitones.For
multi‐samplelayerswithnarrowkeyranges,largeamountsoftimbreshiftingwillcause
differentsamplerootstobeplayedback.
Playback Mode
Thisgivesyounumerousoptionsformanipulatingthesamplesinthecurrentlayerasyou
triggerthem.Normalleavesthesamplesunaffected,whileReverseplaystheminreverse.Ata
valueofReverse,thesampleswillcontinuetoloopaslongasnotesaresustained.Toplaythem
justonce
inreverse,youwouldadjustthelengthofthelayer’samplitudeenvelope(explained
laterinthischapter).BiDirect(bidirectional)causesthesamplestoloopinfinitely,alternating
betweennormalandreversedplayback.Noisereplacesthesampleswithawhitenoise
generator.
Alternative Controller (AltControl)
SeeAlternativeSwitch(AltControlandAltMethod)below.
Alternative Switch (AltControl and AltMethod)
Many,butnotall,PC3Ksamplerootshavebeenpre‐assignedacarefullychosen,fixedalternate
samplestartorendpointthatcanbeselectedusingtheAlternateSwitchfeature(AltControland
AltMethodparameters).Thisfeatureallowsyoutocontrolthesampleplaybackstart/endtime
triggeredbyanycontrolsource.
Use
theAltControlparametertospecifyacontrolsourcethatwillcausethesampletobeginor
endattheAltpoint.ThenusetheAltMethodparametertochoosebetweenswitchedand
continuouscalculationoftheAltpoint.IfthevalueofAltMethodisSwitched,thePC3Kwilluse
theAlt
pointwhentherelevantcontrolsourceisatavaluegreaterthan64atNoteStart.If
AltMethodisContinuous,theAltpointwillvarydependingonthevalueoftherelevantcontrol
sourceatNoteStart.
Asanexample,supposeyou’ reworkingwithaflutekeymapandwishtocontrol
theamountof
chiffheardatthebeginningofthesound.OntheKEYMAPpageintheProgramEditor,set
AltControltoMWheel.NowtheModWheelcontrolshowmuchoftheinitialsampleattackis
used.IfyousetAltMethodtoSwitchedandmovetheModWheelatleast
half‐wayup,atNote
Startthesamplewillbeginatthepre ‐setalternatestartpoint(inthiscase,slightlypasttheinitial
chiff).IfyousettheAltMethodtoContinuous,thePC3Kwillinterpolatethesample’sstarting
pointbasedonthepositionoftheModWheel.Ifthe
ModWheelis75%ofthewayupatNote
Start.thesamplewillbegin75%ofthewaybetweennormalandalternatestartpoints.