Hello all!

I'm using FaceOSC and then oscP5 on Processing to access the coordinates of my face.

Hey all!

I'm working on a program that draws a wave using several line() functions, but I think maybe there is a more efficient way to do so. I need to use the line functions because I'm putting some noise in the wave too. Well, I think it's better if you run the code, so here it is:

1. int val=50;
2. Wave onda;
3. void setup(){
4.   size(600,300);
5.   background(255);
6.   strokeWeight(2);
7.   smooth();
8.   frameRate(60);
9.   PVector offset;
10.   offset = new PVector(0,height/2);
11.   // Para onda ficar suave é necessário que a frequência seja uma razão da largura do sketch
12.   onda = new Wave(offset,  height/3, width/100, 0.0);
13. }
14. void draw(){
15.   //background(244,30);
16.  
17.   onda.display(); 
18.   noStroke();
19.   fill(255,30);
20.   rect(0,0,width,height);
21.   stroke(2);
22.  
23.   print(val+"\n");
24. }
25. void keyPressed(){
26.   switch(keyCode){
27.     case UP:
28.       val-=5;
29.       break;
30.     case DOWN:
31.       val+=5;
32.       break;
33.   }  
34. }
35. class Wave {
36.  
37.   PVector offset, p, last;
38.   float amplitude;
39.   float frequency;
40.   float angle;
41.  
42.   //constructor
43.   Wave(PVector off, float amp, float fre, float ang) {
44.     offset = new PVector(off.x, off.y);
45.     amplitude = amp;
46.     frequency = fre;
47.     angle = ang;
48.     last = new PVector(offset.x, offset.y);
49.   }
50.  
51.   void display() {
52.    
53.       p = new PVector(0,0);
54.       for (float x=0; x<=width; x+=1){
55.        
56.         p.x = offset.x + x;
57.         p.y = offset.y + (amplitude * sin(radians(angle)));
58.        
59.         p.y += customRandom(val);
60.         //p.y += 30 * cos(rand);
61.         //print(customRandom()+"\n");
62.       
63.         line(last.x, last.y, p.x, p.y);
64.         last.x = p.x;
65.         last.y = p.y;
66.         angle+=frequency/2;
67.        
68.         if(angle>360-frequency/2)
69.           angle=0;
70.       }
71.       last.x=offset.x;
72.     }
73.    
74.     float customRandom(int amp){
75.       float rand = random(50);
76.       float ret = sin(noise(rand))*amp;
77.       return ret;
78.     } 
79.  
80. }

Hey all,

I'm trying to use geoMap library, but they have their own Table class, that conflicts with Processing's Table class.

So when I use Table I get this message:

1. The type Table is ambiguous

I want to know how can I not import Processing's Table class.

Thanks!

Hey guys,

I'm trying to make a pitch detector for acoustic guitars on processing.

I'm very new at audio and having a little trouble for detecting the pitch of each strings of the guitar. I'm using minim but I don't know how to get info out of the frequency spectrum and detect the exact pitch of that string.

For a regular guitar the frequency range goes from 82Hz (E) to 330Hz (e). For each string it goes like this:

E      82 Hz
A      110 Hz
D      147 Hz
G      196 Hz
B      247 Hz
e      330 Hz

My starting point was this FFT example of Linear Logaritmic Averages, but I still don't know how to work with this frequency spectrum neither how to detect the pitch accurately.

I'm reading some stuff on the subject right now, but if anybody here has a hint ou a better approach to this problem I would be very greatful.

Thanks! :)

Hey guys,