Kurzweil PC3K Series - The LFO Page

Program Mode
The LFO Page
6-37
The LFO Page
LFOsarelow‐frequency(i.e.,subsonicfrequency)oscillators .You’llusetheLFOpagetodefine
thebehaviorofthetwoLFOsavailabletoeachlayer.LFOsareperiodic(repeating)control
sources.Thebasicelementsaretherateandshape,whichdefinehowfrequentlytheLFO
repeats,andthewaveformofthe
modulationsignalitgenerates.
WiththePC3K,youcan setupperand lowerlimitsoneachLFO’srate,andassignacontrol
sourcetochangetheLFO’srateinrealtime,ifyouwish.
Becauseofitsperiodicnature,theLFOisperfectforcreatingeffectslikevibrato(cyclicvariation
inpitch)
andtremolo(cyclicvariationinamplitude).Whenyou’reeditingLFOs,oranycontrol
source,rememberthatitmustbeassignedtocontrolsomeparameterbeforeyou’llhearthe
effectsofyouredits.
LFO1isalwayslocal,meaningthatit’striggeredwitheachNoteOnevent,andruns
independentlyforeachnote
inthelayer.LFO2islocalbydefault,butcanbemadeglobal.Thisis
doneontheCOMMONpage,bysettingtheGlobalsparametertoOn,whichcausesLFO2,
ASR2,FUN2andFUN4alltobecomeglobal.Globalcontrolsuniformlyaffecteverynoteineach
layer.
Parameter Group (Available
for each of LFO1 and LFO2)
Range of Values Default
Minimum Rate 1/4 note, 1/8 note, 1/8 triplet, 1/16 note,
0 to 24 Hz
0.00
Maximum Rate 0 to 24 Hz 0.00
Rate Control Control Source List Off
LFO Shape LFO Shape List (Ref. Guide) Sine
LFO Start Phase 0, 90, 180, 270 Degrees 0