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Spray – Alva Noto

Spray by Alva Noto.

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Granular Synthesis – Curtis Roads

Point Line Cloud by Curtis Roads.

 Curtis Roads on Granular Synthesis.

Pulse Width Modulation of 4 LEDs

PWM of four LEDs at various intervals using Arduino.  Recorded with two photocells and Zoom H2.

Spectrogram of recording:

Spectrogram edited to enhance patterns:

Code:

// Fade x 4
// Fading four LEDs in and out at various intervals.

 int brightness = 0; // how bright the LED is
 int fadeAmount = 50; // how many points to fade the LED by

void setup() {
 // declare pin 9 to be an output:
 pinMode(10, OUTPUT);
 pinMode(11, OUTPUT);
 pinMode(5, OUTPUT);
 pinMode(6, OUTPUT);
 }

void loop() {
 // set the brightness of pin 9:
 analogWrite(10, brightness);
 analogWrite(11, brightness*2);
 analogWrite(5, brightness*3);
 analogWrite(6, brightness*4);
 // change the brightness for next time through the loop:
 brightness = brightness + fadeAmount;
 // reverse the direction of the fading at the ends of the fade:
 if (brightness == 0 || brightness == 255) {
 fadeAmount = -fadeAmount ;
 }
 // wait for 30 milliseconds to see the dimming effect
 delay(30);
 }

Pulse Width Modulation of LED

PWM of a LED using Arduino and recorded with Listening to Light device.

Spectrogram of recording.

Edited image to highlight frequency patterns.

Edited and inverted image to highlight frequency pattern.

 

Pile Driver Outside of Arch II

Vibrations created in studio by pile driver outside Arch II.

Schlesisches Tor Recordings

Various field recordings and device recordings at Berlin near U-Bahn station Schlesisches Tor.

Walking around site device recording and ambient recording.

Device recording.

Device recording.