:: Description ::
Pulsate is an audio generative interface. It needs heartbeats of a participant to change the surface and patterns of the screen, which are projected on the wall.

Medium, method and input::
Heartbeats are detected by microphone, processed in Processing software and then sent out to projector. The biological and physical features of the participant have tangible effects on shapes, colours and alpha channels changing and determining the form and geometry of the wallpaper. Parameters used in the code distinguish the wallpaper made by one participant from the others’; names, ages, and heartbeats’ frequency and volume are essential sources to run the code.

:: Interaction and output ::
Pulsate presents dialogues made between body, software and hardwares. The loop systems of heartbeats and the code co-work to produce dynamic wallpapers. The surface of the wall becomes liquidized according to the living system of human body.

:: Practices and achievements ::
• Using microphone to detect volumes of heartbeats and feed them to Processing
• Using sonia_v2_9 library
• Continually storing the peak volumes of heartbeats in a variable
• Reading different levels of beat and setting different conditions to response to each range
• Translating levels of beat into different geometric forms: circle, ellipse and rectangle with shapes, lines, colours and intensities
• Constructing changing patterns

:: Problems and developing plans ::
• There are no choices for the output colour; it is currently indicated by numerical values of name, surname and age of the participant. Three pushed switches will be wired to I-Pac microcontroller and connected to USB port of computer. Three keys will get message and call different colour ranges. The code will be developed.
• Using the same method and microcontroller to provide choices of geometric pattern (circle, ellipse and rectangle)
• Finding a space and a projector and contacting a meditator, a dancer and an athlete to come and participate to the work on the submission

:: Examples of interface ::

• Circle

•Ellipse

• Rectangle

Last Update 23 January 2008