20
Dark EnerGy
DOEPFER
Functionality
3.3.2. MIDI to CV/Gate interface
Since Dark Energy‘s soundgeneration works entirely real analogue and real analogue control voltages and
gate signals are used internally, the unit features a complete USB/MIDI to CV/Gate interface.
This integrated USB/MIDI to CV/Gate interface generates not only a pitch control voltage and a gate signal
to trigger the envelope, it also provides several control voltages derived from incoming MIDI velocity and
MIDI controller data. The MIDI to CV interface also features a simple but useful arpeggiator and a so called
reference tone. You have met the reference tone before to select the MIDI channel – it is the MIDI note, that
sets Dark Energy‘s pitch CV1 to 0 Volts and thus becomes the lowest note of Dark Energy‘s note range.
All CVs and gate signals are provided via sockets on the backpanel of Dark Energy. Use patch cords to
connect them with the module inputs on Dark Energy‘s frontpanel. So you can control the most importand
soundparameters dynamically via MIDI velocity and a MIDI controller.
You may „abuse“ Dark Energy‘s MIDI to CV/gate interface to control another, not MIDIfied analogue synthe
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sizer that fits to the specifications of Dark Energy.
Depending on the incomming MIDI data (note on/off, notenumber, pitchbend, MIDI controller, velocity) the
interface generates:
• The gate signal for the envelope generator,
• CV1: controlled by MIDI note numbers; 1V/oct scaling (internally connected with the VCOs pitch
control input)
• CV2: controlled by MIDI pitchbend data (ranges approx. -2,5V to +2,5V or 0V to +5V, selectedable via
internal jumper). CV2 has no internal connection, it can be patched to the control inputs on Dark Energy‘s
frontpanel as desired.
• CV3: controlled by volume or the product of volume and velocity (selectable via learn mode). CV3 has no
internal connection, it can be patched to the control inputs on Dark Energy‘s frontpanel as desired. Please
refer to page 20, section (2).
• CV4: controlled by a free selectable MIDI controller or the product of controller data and velocity
(controller number selectable via learn mode). CV4 has no internal connection, it can also be patched to
the control inputs on Dark Energy‘s frontpanel as desired. Please refer to page 20, section (2).
By changing an internal jumper, the CV4 socket can become a second audio output. In this case, CV4 is
not available any more. This mod enables you to use Dark Energy without any cable plugged into the
frontpanel. The default setting is CV4.
