The Organ models a drawbar organ similar to the Hammond B3 and Leslie speaker combo. Sound is created by pulling on 9 drawbars, each representing a different harmonic. The sound is then passed through a rotary speaker simulator (Leslie) and overdrive unit. The organ tutorial video shows how to use this machine.

UI Reference

  1. Machine label: This is used to identify this machine in various places throughout the app. Its value can be changed via a long-press action (label changes color to indicate a successful touch). Upon successful long-press, a keyboard offering you to rename the machine will appear. Use this to identify a machine in a rack configuration where there might be more than one instance of the same machine.

  2. Preset LCD: This display shows the name of the last loaded preset and is used to load presets. A preset is a saved file that contains the positions of all knobs and controls. To load a preset, touch the preset LCD. This will bring up a File Browser with a list of saved presets to choose from.

  3. Save Preset button: This button allows you to save your own presets to disk for use later. Pressing this button will bring up a keyboard allowing you to name your preset. Presets are stored on the external storage in /caustic/presets/organ.
  4. Output VU meter: Indicates the level at which the organ is outputing signal. If this reaches RED, then the organ will output distorted sound.

  5. Drawbars: Pull down on the drawbars to determine the amplitude of each harmonic. A drawbar pulled all the way down outputs at full volume.

  6. Percussion Tone knob: Controls the harmonic balance for the percussion sound. Fully left corresponds to the 4" harmonic, fully right corresponds to the 2 2/3" harmonic

  7. Percussion Decay knob: Controls how quickly the percussion sound decays to silence. When turned to the minimum time (fully left), the percussion effect is turned off.

  8. Leslie Speed knob: Controls the rotation speed of the simulated rotary speakers in the Leslie unit.

  9. Leslie Depth knob: Controls the amount of rotation effect mixed into the final output.

  10. Drive knob: Controls the amount of distortion applied to the output signal. (This is a very mild overdrive)

  11. Output Volume knob: The final output volume of the organ.

  12. Mute/Solo buttons: These buttons link to the ones in the mixer and are used to cut out this machine from the final mix or listen to only this machine.

  13. Preview Keyboard: This keyboard is used to play notes to help when designing sounds with the organ.

  14. Octave buttons: Raises or lowers the octave of the Preview Keyboard.