Get Line Out by Damien Di Fede. This sketch demonstrates how to use the <code>getLineOut</code> method of <code>Minim</code>. This method returns an <code>AudioOutput</code> object. An <code>AudioOutput</code> represents a connection to the computer's speakers and is used to generate audio with <code>AudioSignal</code>s. There are five versions of <code>getLineOut</code>: <pre> getLineOut() getLineOut(int type) getLineOut(int type, int bufferSize) getLineOut(int type, int bufferSize, float sampleRate) getLineOut(int type, int bufferSize, float sampleRate, int bitDepth) </pre> The value you can use for <code>type</code> is either <code>Minim.MONO</code> or <code>Minim.STEREO</code>. <code>bufferSize</code> specifies how large you want the sample buffer to be, <code>sampleRate</code> specifies what the sample rate of the audio you will be generating is, and <code>bitDepth</code> specifies what the bit depth of the audio you will be generating is (8 or 16). <code>type</code> defaults to <code>Minim.STEREO</code>, <code>bufferSize</code> defaults to 1024, <code>sampleRate</code> defaults to 44100, and <code>bitDepth</code> defaults to 16. Before you exit your sketch make sure you call the <code>close</code> method of any <code>AudioOutput</code>'s you have received from <code>getLineOut</code>.

  
  
  import ddf.minim.*;
  import ddf.minim.signals.*;
  
  Minim minim;
  AudioOutput out;
  SineWave sine;
  
  void setup()
  {
    size(512, 200, P3D);
    
    minim = new Minim(this);
    
    // get a line out from Minim, default sample rate is 44100, default bit depth is 16
    out = minim.getLineOut(Minim.STEREO, 2048);
    
    // create a sine wave Oscillator, set to 440 Hz, at 0.5 amplitude, sample rate 44100 to match the line out
    sine = new SineWave(440, 0.5, out.sampleRate());
    // add the oscillator to the line out
    out.addSignal(sine);
  }
  
  void draw()
  {
    background(0);
    stroke(255);
    // draw the waveforms
    for(int i = 0; i < out.bufferSize() - 1; i++)
    {
      line(i, 50 + out.left.get(i)*50, i+1, 50 + out.left.get(i+1)*50);
      line(i, 150 + out.right.get(i)*50, i+1, 150 + out.right.get(i+1)*50);
    }
  }
  
  void stop()
  {
    // always close Minim audio classes when you are done with them
    out.close();
    minim.stop();
  
    super.stop();
  }
  

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[] readme course(s) preface I 1 2 II 3 4 III 5 6 7 IV 8 9 10 V 11 12 afterthought(s) appendix reference(s) example(s) resource(s) _

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(C) Æliens 20/2/2008

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