Eirik Brandal

Waldian
Waldian is a standalone, wall hanging sound and light fixture capable of playing a near infinite amount of melodic permutations over a predetermined musical scale, complemented by emerging light patterns from twelve separate LEDs spread across the sculpture. In technical terms, Waldian contains two oscillators, an envelope generator and a voltage controlled amplifier, all controlled by impulses from a network of logic gates akin to those of early computers. These impulses are essentially the nerves in the electronic ecosystem, deciding over pitch and amplitude changes as well as creating bursts of light to highlight the entrances of each note. Finally, there is a tube overdrive stage that creates harmonic and subharmonics based on how far away the two oscillators are from each other in frequency. Most parameters are customizable, such as the aforementioned pitch, amplitude and overdrive, but the responsiveness and envelope of the light bursts can also be adjusted, directly affecting the appearance of the light patterns.

Cod.Act

Sound City
Suspended from the ceiling by two springs and equipped with an oscillating weight fixed inside its body, a Sound City loudspeaker shakes in a disorderly manner in space. The music it plays reacts directly to the movements as if the musicians were inside the loudspeaker and trying in vain to adapt their playing to the turbulences. The originality of the movements comes from the pulsations and interferences produced by the interaction of two coupled harmonic oscillators (the spring and the pendulum) not having the same natural frequency. The two pneumatic jacks to which the springs are attached control the amplitude of the swings.

Arcangel Constantini

Phonotube
Phonotube are experimental instruments for live audio visual performance, constructed as Luminous instruments and sound sequencers, that use fluorescent lamp tubes and LED strips, as light sources. The tubes are covered with negative ofsset, printed with sound patterns that spin at variable speed. The oscillation from the light emitted by these patterns is transduced to sound, processed by light excitation, a variety of electronic circuits as pre-amps with photo-cells and phototransitors, voltage control oscillators, relays, Filters, 1bit attiny85 micro controler. The technological principle is based on the photophone, patented by Graham Bell and inspired by audio visuals experimenters as Norman Mclaren,that used the optical sound technology of Film. In the history of the invention of electronic sound instruments, the study of light and its behavior as a particle or wave, and its application to sound processes, had a relevant position and is currently, one of the areas of scientific research with the greatest potential in human communication.