Edges is a bank of four voltage-controlled digital oscillators - 3x square wave channels and 1x LFSR noise
or triangle channel - an architecture inspired by the music synthesis circuitry of classic 8-bit consoles and
home computers. For a more faithful reproduction of these classic sounds, the square waves are
generated using digital logic (timers / counters) rather than DSP techniques, and are thus free of aliasing
artifacts. Each voice is equipped with a gate input, allowing it to be toggled on/off without the need for an
external VCA. The 4 channels have individual outputs and are sent to a built-in mixer. Finally, a simple
polyphonic sequencer allows each channel to play arpeggios or trills.
Edges is designed for Eurorack synthesizer systems and occupies 20 HP of space. It requires a -12V /
+12V / +5V supply (2x8 connector), consuming 25mA from the -12V / +12V rails and 45mA from the +5V
rail. The red stripe of the ribbon cable must be oriented on the same side as the “Red stripe” marking on
the printed circuit board.
A1 .. A4. GATE
: Channel gate input. When the sequencer is off, this input acts as a binary VCA - the
channel is off when the signal is 0V; on when the signal exceeds a 0.7V threshold. When the sequencer is
active, the channel is always on, and this input acts as a clock input, to step through the sequence. The
gate inputs are normalled. For example, if you connect a jack on channel 2’s gate, it will be used for
Mutable Instruments | Edges
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