Any ideas?

Must admit I rarely work with audio in Processing, but to me AudioOutput sounds about right.

Hi,

maybe you can take a look a this topic

it could look something like this ( I don't test this code because no soundcard at this moment but say me):

1. import ddf.minim.*;
2. Minim minim;
3. InputOutputBind signal;
4. AudioInput in;
5. AudioOutput out;
6. void setup()
7. {
8.   size(512, 400, P2D);
9.   minim = new Minim(this);
10.   int buffer = 1024;
11.   out = minim.getLineOut(Minim.STEREO, buffer);
12.   in = minim.getLineIn(Minim.STEREO, buffer);
13.   signal = new InputOutputBind(1024);
14.   //add listener to gather incoming data
15.   in.addListener(signal);
16.   // adds the signal to the output
17.   out.addSignal(signal);
18. }
19. void draw() {
20.  
21.  
22.   fill(0);
23.   rect(0, 0, width, 200);
24.   stroke(255);
25.   // draw the waveforms in
26.   for (int i = 0; i < in.bufferSize() - 1; i++)
27.   {
28.     line(i, 50 + in.left.get(i)*50, i+1, 50 + in.left.get(i+1)*50);
29.     line(i, 150 + in.right.get(i)*50, i+1, 150 + in.right.get(i+1)*50);
30.   }
31.   // out
32.   fill(0, 200, 200);
33.   rect(0, 200, width, 400);
34.   for (int i = 0; i < out.bufferSize() - 1; i++)
35.   {
36.     line(i, 250 + out.left.get(i)*50, i+1, 250 + out.left.get(i+1)*50);
37.     line(i, 350 + out.right.get(i)*50, i+1, 350 + out.right.get(i+1)*50);
38.   }
39. }
40. class InputOutputBind implements AudioSignal, AudioListener
41. {
42.   private float[] leftChannel ;
43.   private float[] rightChannel;
44.   InputOutputBind(int sample)
45.   {
46.     leftChannel = new float[sample];
47.     rightChannel= new float[sample];
48.   }
49.   // This part is implementing AudioSignal interface, see Minim reference
50.   void generate(float[] samp)
51.   {
52.     arraycopy(leftChannel, samp);
53.   }
54.   void generate(float[] left, float[] right)
55.   {
56.     arraycopy(leftChannel, left);
57.     arraycopy(rightChannel, right);
58.   }
59.   // This part is implementing AudioListener interface, see Minim reference
60.   synchronized void samples(float[] samp)
61.   {
62.     arraycopy(samp, leftChannel);
63.   }
64.   synchronized void samples(float[] sampL, float[] sampR)
65.   {
66.     arraycopy(sampL, leftChannel);
67.     arraycopy(sampR, rightChannel);
68.   }
69. }

Any other solutions to this problem? I'm trying the code suggested above but getting this error:

1. The method addListener(AudioListener) in the type AudioSource is not applicable for the arguments (AudioSignal).