Water Organ

Ambisonic Kinetic Sculpture

2017

A kinetic sculpture plays an ambisonic musical composition as inductive forces transform floating resonant vessels into moving speakers.

Participants trigger a random process generating electronic tones into seven copper inductive coils placed under water. Magnets underneath floating vessels transform upcycled steel “tin” lids into audible speakers, each resonating with a unique timbral character while passing over copper inductive speaker coils. A seven-toned ambisonic composition emerges from the minute vibration of each steel vessel floating above the water. The audible volume of each vessel varies according to a complex interplay between a vessel’s resonant frequency and the frequency of the electromagnetic audio signals being sent through the coils. Kinetic motion emerges from a semi-chaotic imbalance of inductive and magnetic forces, periodically pushing and pulling magnetic vessels towards and away from the coils as the electrical current reverses direction.

Water Organ behaves as a many-bodied “strange attractor” whose chaotic motion emerges through mutual magnetic repulsion between vessels combined with the changing magnetic polarity of copper inductive coils. This work offers a calming natural meditative “Koi pond”-like behavior, as if the organism’s movement were an emergent murmuration of living agents.

Audible elements of this ambisonic composition can only be partially experienced through a stereo video recording. It is best to experience the true omni-directional sound of this piece in-person.

Materials

  • Recycled steel lids (sometimes glass petri dishes, sometimes acrylic dishes)
  • Custom wound copper coil inductors
  • Recycled door stops
  • Magnets
  • Polycarbonate, nylon mesh, vinyl plastic
  • Amplifiers, Teensy microcontroller

Exhibitions

  • Liquid Assets Water Organ featured with Thingamajigs Performance Group, San Jose Art Museum, CA, 2017
  • Last Festival, San Jose, CA, 2017
  • Dorkbot SF, SF, CA, 2017
  • Manylabs, SF, CA, 2017
  • Paseo Prototyping Festival, San Jose, CA, 2016