Nov 2019, Revision: 13 June 2024

  Press the button 'Audio ON/OFF' to start or disable audio. The synthetic sounds have a triangular wave form.
  Click on the lowest string of the HELICONA (square) to determine the working angle of the divider and hereby the pitch of the chord.
  The ticks indicate octaves so that the pitch range of the chord can be varied within three octaves.
  Click the buttons 'Major', 'Minor' or 'Mix' to determine the chord type to be played. 'Arpeggio' plays the selected chord as a slow apreggio.

  The sounds produced with the HELICONA are also shown on the VOLVELLE (circular diagram), which rotates according to the pitch of the chord, i.e., the working angle of the helicona.
  The full circle corresponds to an octave so that the angles correspond to octave classes of the sounds.
  The working angle can also be determined by clicking within the circle line. In his case the pitch of the lowest string remains in the lowest octave.