DOEPFER Dark Energy User Manual

10
Dark EnerGy
DOEPFER
Functionality
3. Functionality
Inthissection,wewillexploreallofDarkEnergy‘smodulesandfunctionsindetail.Wewillalsohavea
closelookonthemodulesinteractionandnallytheMIDIfunctionality.
3.1. Signalow
USB
MIDI In
MIDI / CV
Interface
Oscillator
(VCO)
Filter
(VCF)
Amplifier
(VCA)
Low Frequency
Oszillator 2
(LFO1)
Low Frequency
Oszillator 2
(LFO2)
Envelope
Generator
(ADSR)
Audio
Output
Gate Signal
Envelope Control Voltage
LFO Control
Voltage
Pitch Control
Voltage
Audio
Audio
Audio
CV 4
CV 3
CV 2 CV 1
ThegureaboveshowsabriefoverviewofDarkEnergy‘ssignalow.
Thedarkercolouredboxesshowallmodulesthatgenerateorprocessthesoundresp.theaudiosignal.
TheyarelabelledVCO,VCFandVCAandformtheaudiopath.Thelightgreyboxesarecontrolmodules.
Insteadofaudiosignals,theygeneratecontrolvoltages,whichmodulatetheaudiomodules.Theenvelope
generatorcansendcontrolvoltagetoVCO,VCFandVCA,thelowfrequencyoscillators(LFO1andLFO2)
cansendtheircontrolvoltagestobothoscillatorsandtothelter(LFO2)resp.theamplier(LFO1).
TheMIDItoCV/Gateinterface„translates“incommingMIDIdataintocontrolvoltagesthatcanbeaccessed
atthesocketsCV1–4.CV1isalsofedintotheVCOsinputtocontroltheoscillatorpitch.Nexttothis,the
MIDItoCV/Gateinterfacegeneratesagatesignalwhichtriggerstheenvelopeandstartsatone.
Thegureonthefollowingpageshowsthecompletesignalpathinallit‘sbeauty.Userswithsometechni-
calskillsmayeasilyreenactallroutings.Allinputsandoutputs,knobsandswitchesaswellasallinternal
submodules,suchasaddersandinverters,areshowninthegracs.
Thefunctionalityofallmodulsisdescribedinthefollowingsectionfrompage12on.Amoregeneraland
easytounderstanddescriptionofthebasicsofanaloguesoundgenerationcanbefoundinsection4
„Basics of Soundgeneration“.

DOEPFER Dark Energy Specifications

General

LFO	1 LFO with triangle and square waveforms
Envelope	1 ADSR Envelope Generator
Connectivity	MIDI In, CV/Gate In/Out
Type	Analog Synthesizer
Oscillator	1 VCO with sawtooth, pulse, and triangle waveforms
Filter	24 dB low-pass filter
Audio Output	1 mono audio output
Power Supply	External Power Supply