messages in light: project light transmission / fall 2008
summary: i use light as a carrier wave for sound transmission, culminating in audio-visual installations where sound transmitted from many points of light is decoded by an array of optical receivers. in essence, we simultaneously see and hear information being transmitted though the air as we discover hidden messages in light. therefore, we are able to experience a typically invisible phenomenon - the passage of wireless information - directly and tangibly.
building: the 'scope demonstrates the pulsewidth modulation of the led via the audio input, which is interpreted by a light sensor as amplitude modulation. sound is broadcasting but silent without receiver circuit..
(are you curious what was on my ipod here for testing?!
oh, go ahead and listen... a little electro is good for you.)
1:modulated laser installation/solar cell receivers. extremely focused transmission beam. details HERE
2:modulated leds/ photodiode receivers; telescope as antenna. very focused transmission area. details HERE
3:modulated streetlamp/ photodiode receivers; telescope antenna. 360º transmission area.