Minim core | ugens | analysis |
Delay delAmp | Description the strength of each repetition compared to the previous. often labeled as feedback on delay units. Signature
    UGen.UGenInput delAmp
Related setDelAmp ( ) Delay UGen.UGenInput Example
    /* delayExample<br/>
     * is an example of using the Delay UGen in a continuous sound example.
     * <p>
     * For more information about Minim and additional features,
     * visit http://code.compartmental.net/minim/
     * <p>
     * author: Anderson Mills<br/>
     * Anderson Mills's work was supported by numediart (www.numediart.org)
     */

    // import everything necessary to make sound.
    import ddf.minim.*;
    import ddf.minim.ugens.*;

    // create all of the variables that will need to be accessed in
    // more than one methods (setup(), draw(), stop()).
    Minim minim;
    AudioOutput out;
    Delay myDelay;

    // setup is run once at the beginning
    void setup()
    {
      // initialize the drawing window
      size( 512, 200 );

      // initialize the minim and out objects
      minim = new Minim(this);
      out = minim.getLineOut();

      // initialize myDelay with continual feedback and audio passthrough
      myDelay = new Delay( 0.4, 0.5, true, true );

      // sawh will create a Sawtooth wave with the requested number of harmonics.
      // like with Waves.randomNHarms for sine waves,
      // you can create a richer sounding sawtooth this way.
      Waveform saw = Waves.sawh( 15 );
      // create the Blip that will be used
      Oscil myBlip = new Oscil( 245.0, 0.3, saw );

      // Waves.square will create a square wave with an uneven duty-cycle,
      // also known as a pulse wave. a square wave has only two values,
      // either -1 or 1 and the duty cycle indicates how much of the wave
      // should -1 and how much 1. in this case, we are asking for a square
      // wave that is -1 90% of the time, and 1 10% of the time.
      Waveform square = Waves.square( 0.9 );
      // create an LFO to be used for an amplitude envelope
      Oscil myLFO = new Oscil( 1, 0.3, square );
      // offset the center value of the LFO so that it outputs 0
      // for the long portion of the duty cycle
      myLFO.offset.setLastValue( 0.3 );

      myLFO.patch( myBlip.amplitude );

      // and the Blip is patched through the delay into the output
      myBlip.patch( myDelay ).patch( out );
    }

    // draw is run many times
    void draw()
    {
      // erase the window to dark grey
      background( 64 );
      // draw using a light gray stroke
      stroke( 192 );
      // draw the waveforms
      for( int i = 0; i < out.bufferSize() - 1; i++ )
      {
        // find the x position of each buffer value
        float x1  =  map( i, 0, out.bufferSize(), 0, width );
        float x2  =  map( i+1, 0, out.bufferSize(), 0, width );
        // draw a line from one buffer position to the next for both channels
        line( x1, 50 + out.left.get(i)*50, x2, 50 + out.left.get(i+1)*50);
        line( x1, 150 + out.right.get(i)*50, x2, 150 + out.right.get(i+1)*50);
      }

      text( "Delay time is " + myDelay.delTime.getLastValue(), 5, 15 );
      text( "Delay amplitude (feedback) is " + myDelay.delAmp.getLastValue(), 5, 30 );
    }

    // when the mouse is moved, change the delay parameters
    void mouseMoved()
    {
      // set the delay time by the horizontal location
      float delayTime = map( mouseX, 0, width, 0.0001, 0.5 );
      myDelay.setDelTime( delayTime );
      // set the feedback factor by the vertical location
      float feedbackFactor = map( mouseY, 0, height, 0.99, 0.0 );
      myDelay.setDelAmp( feedbackFactor );
    }
Usage Web & Application