FUNDAMENTALSOF PROGRAMMING

SM1204 SEMESTER A 2012

ASSIGNMENT 3

DUE DATE 21 DEC 2012

COLLECTION VIA ACS

REQUIREMENTS

oCreate your own music visualization (20%)oSelect your audio / musicoDesign your visualization

oUse of Minim audio library (30%)

oProgram complexity (20%)

oCreative graphics (30%)

EXAMPLE

http://www.youtube.com/watch?v=KW5D9IVfb1k&feature=related

EXAMPLE

http://www.youtube.com/watch?v=1JkN3Uwgqi4&feature=related

EXAMPLE

http://www.youtube.com/watch?v=0AVyhytUy7k&feature=related

SAMPLE PROGRAM

SAMPLE PROGRAM

Import library

Define player and beat detector objects

import ddf.minim.*;import ddf.minim.analysis.*;

Minim minim;AudioPlayer player;BeatDetect beat;int n = 5;float[][] a = new float[n][n];

SAMPLE PROGRAMCreate objects & Initialize array elementsvoid setup() { size(400, 400); minim = new Minim(this); player = minim.loadFile("test2.mp3"); beat = new BeatDetect( player.bufferSize(), player.sampleRate() ); player.play();

// initialize item size for (int i=0; i<n; i++) { for (int j=0; j<n; j++) { a[i][j] = 40; } }}

SAMPLE PROGRAMBeat detection and renderingvoid draw() { beat.detect(player.mix); background(0);

strokeWeight(4); for (int i=0; i<n; i++) { for (int j=0; j<n; j++) { // enlarge corresponding circle if onset if (beat.isOnset(i*5+j)) { a[i][j] = 80; }

float s = a[i][j]; float c = map(s, 40, 80, 200, 255); noFill(); stroke(c); ellipse(i*80+40, j*80+40, s, s); fill(c); noStroke(); ellipse(i*80+40, j*80+40, s / 2, s / 2); // decrease circle sizes if (a[i][j] > 40) { a[i][j] *= 0.95; } } }}

SAMPLE PROGRAM

Do not forget to add the stop( ) function

void stop() { player.close(); minim.stop(); super.stop();}

USEFUL FUNCTIONS & REFERENCES

omap (value, low1, high1, low2, high2)

oRe-maps a number from one range to another

oconstrain(value, min, max)

oConstrains a value to not exceed a maximum and minimum value.

oabs(value)

oCalculates the absolute value (always position) of a number.