The Tilt

Processing - Technology

Processing: transforming sensors data into sound and light

The Arduino AD-DA converter manages the sensors' signal into digital and sends it on to the processing software and network setup. Thereafter the audio signal is sent to the sound card, amplifiers and speakers.

		The raw sensors' data is manipulated and filtered to extract the relevant movements, tuned to the physical movement of each tree. These modules output a single 10 bit value that represents the tree's real-time activity.
		Left: Each bank's output is expanded to surround movements using multiple speakers. Each surround movement is unique to its bank: it's speed and direction are also controlled by the tree Right: The sonic output is produced by triggering samples in sound banks. These banks are related to wind-activity levels.

We have created different templates to transform the sensor data streams:

Installation version	6 main banks with 6 parallel banks with quad-surround. We use two sound processing mechanisms: monophonic-convolution engine and polyphonic banks. Used in "Sotavento", "Baumberauschen", "Biosphere Lab"

Clustered version	Includes 468 banks (26 clusters of 3 banks for six tree activity levels) with unlimited number of sounds in each bank. The software follows score for live performance, with the ability to change the sounds and switch between different processing methods of the tree's data-stream. Used in "die Schaukel" and "to Sing a Forest".

Organic Pulses	The tree generates non-linear organic pulses in real-time. For live performance with musicians. Inspired by Pauline Oliveros's "Rock Piece" "I.B.R." video here

Tree-to-Light - DMX	The tree controls 6 lamp's intensities, defining "danceable regions" for a dancer to follow. "Ground" video here

*Aggresive quad electronics*	Extensive electronics, quad-channel tree patch, used in Terzet and Hamburg (part 4)

Subtle Drone	The tree generates a subtly changing drone for a Druhpad singer to follow. "Listen, Forget, Listen" audio here