DOEPFER Dark Energy - LFO1 and LFO2 Module Description

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Dark EnerGy
DOEPFER
Functionality
3.2.5. LFO1 and LFO2
ALowFrequencyOscillatorproducesapulsatingsignal,mostlyinthesubaudiorange,whichcanbeused
togenerateperiodicchangesofseveralsoundparameters.DarkEnergyprovidestwoidenticalLFOs.
TheLFOsprovidethefollowingcontrols:
•Frequencyknob
ThisknobcontrolstheLFOfrequencyresp.modulationspeed.
•LFOrangeswitch
ThisswitchprovidesthreedifferentrangesfortheLFOfrequency:„Low“(periods
ofuptoaminute)/„Audio“(above5kHz)/„Medium“(usualLFOrange–several
secondsuptosome10thHertz).
SinceDarkEnergy‘sLFOsproducefrequenciesuptotheaudiorange,theycanbe
usedtogenerateFM-effectswithVCO-pitch,VCO-pulswidthandVCF-frequency
aswellasAM-effects(VCA).Usethisfeaturetocreateinterestingandnoisy
soundeffects.
•DualcolouredLED(yellow/red)showpositiveandnegativewaveformhalfs.Abo-
vefrequenciesofapprox.30Hz,theLEDsseemtolightorange.
•Waveformswitch
ThisswitchselectsthewaveformoftheLFOsignal(triangle/off/square)orshuts
theLFOoff.Trianglesuitssoftmodulations,squaregenerates„jumps“.
•LFO1Outputsocket
TheinvertedoutputsignalofLFO1isprovidedatthissocket.Youmayuseitforadditionalmodulation
paths.
Internaljumpersprovidethenon-invertedsignalofLFO1ortheADSRcontrolvoltageatthissocket.You
maycongurethisjumpertoyourneeds,butpleasekeepinmindthatopeningDarkEnergy‘scasingneeds
somebasicskillsinhandiwork.Ifyoucannotcopewiththis,pleasefeelfreetocontactDoepferanytime.
Youwillndsomemoreinformationinthesection3.5.„Modications“onpage25.