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Fundamentals of Programming

Fundamentals of Programming. SM1204 Semester A 2012. Due date 21 Dec 2012 Collection via ACS. Assignment 3. Requirements. Create your own music visualization (20%) Select your audio / music Design your visualization Use of Minim audio library (30%) Program complexity (20%)

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Fundamentals of Programming

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  1. Fundamentalsof Programming SM1204 Semester A 2012

  2. Due date 21 Dec 2012 Collection via ACS Assignment 3

  3. Requirements • Create your own music visualization (20%) • Select your audio / music • Design your visualization • Use of Minim audio library (30%) • Program complexity (20%) • Creative graphics (30%)

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

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

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

  7. Sample Program

  8. 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];

  9. Sample Program • Create objects & Initialize array elements void 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 (inti=0; i<n; i++) { for (int j=0; j<n; j++) { a[i][j] = 40; } } }

  10. Sample Program • Beat detection and rendering void draw() { beat.detect(player.mix); background(0); strokeWeight(4); for (inti=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; } } } }

  11. Sample Program • Do not forget to add the stop( ) function void stop() { player.close(); minim.stop(); super.stop(); }

  12. Useful Functions & References • map (value, low1, high1, low2, high2) • Re-maps a number from one range to another • constrain(value, min, max) • Constrains a value to not exceed a maximum and minimum value. • abs(value) • Calculates the absolute value (always position) of a number.

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