Little Plucker

UPDATE Fixed a bug where very high pitch voltages could cause a crash.

The Little Plucker module is an oscillator/sound generator designed to mimic the sound of a plucked string. Unlike most oscillators however, it does not produce a constant waveform but effectively produces its own amplitude envelope with a fixed, fast attack and variable slow decay.

A new attack is triggered whenever any of the following events occur:

• The Trigger button on the interface is pressed,
• The Gate input receives a rising edge that reaches 2.5V,
• The voltage on the Pitch CV input changes and the module is not in Gated mode,
• The Gate input is connected and receives a positive going edge that passes at least 2.5V.

Once a note has begun it will continue to sound/decay until any of these events occur:

• A new note is sounded as explained above,
• The Trigger button is released,
• The Gate input voltage drops below 2.5V,

If Pitch CV Input changes when in Gated mode then the pitch of the currently sounding note will change, rather than triggering a new note attack.

Controls are also provided to tune the oscillator and vary the sustain/decay rate. Sustain can also be controlled via an external control voltage. In addition, a Timbre control can be switched in and out and adjusted to give some variability to the character of the string.