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Aftertouch

Aftertouch adds expressive control by responding to pressure applied after the note was triggered. You’ll need a MIDI keyboard that supports aftertouch, or send aftertouch MIDI signals from your DAW. In MPE mode, each voice has its own dedicated MIDI channel, allowing per-note pressure for greater control.

The Katla Params Aftertouch slider offers two distinct modes, selected by moving the slider up or down.

  • In the upper position, aftertouch blends in the four pitch-affecting Katla parameters: Móða, Kvika, Skjálfti, and Glóð.
  • In the lower position, aftertouch creates harmonic clusters by modulating the pitch of voices 1, 2, 4, and 5 while leaving voice 3 unchanged.

In the upper position, aftertouch raises the filter’s cutoff point. In the lower position, it lowers the cutoff point.

In the upper position, aftertouch increases the LFO rate. In the lower position, it decreases the rate.