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HTML

              
                
<html>
  <head>
<!--     <script src="https://cdnjs.cloudflare.com/ajax/libs/p5.js/0.6.1/p5.min.js"></script> -->
<!--     <script src="https://cdnjs.cloudflare.com/ajax/libs/tone/13.2.0/Tone.min.js"></script> -->
<!--     <script src="https://rawgit.com/nexus-js/ui/master/dist/NexusUI.js"></script> -->
    <link rel="stylesheet" type="text/css" href="style.css">
    <meta charset="utf-8" />

  </head>
  <body>

   <div id="target"></div>
    <script src="sketch.js"></script>
  </body>
</html>

              
            
!

CSS

              
                html, body {
  margin: 0;
  padding: 0;
}
              
            
!

JS

              
                /* PDM Course: Sound Unit

  Press the enter key to trigger noise. adjust the filter cutoff frequency with the slider. 
  
  see:  https://tonejs.github.io/docs/r13/NoiseSynth
  
  NOTE: for some reason I can't update this to the newest version of Tone
*/

let ampEnvelope;
let noise;
let filterCutoff; 

function setup() {
  createCanvas(1000, 1000)
  // this code lets us visualize what's happening with the sound   

  // Tone.setContext(Nexus.context);
  // let spectrogram = new Nexus.Spectrogram('#target') 
  // spectrogram.connect( Tone.Destination);
  
  ampEnvelope = new Tone.AmplitudeEnvelope({
    "attack": 0.1,
    "decay": 0.2,
    "sustain": 1.0,
    "release": 0.8
  }).toDestination(); 
  
  // lets put a filter between the noise and envelope
  //   hi pass filter - lets the highs pass through
  filter = new Tone.Filter({
		"type" : "lowpass", //change the filter type to see differnt results
		"Q" : 3
	}).connect(ampEnvelope)
  
   //   see: https://tonejs.github.io/docs/r13/Noise
  noise = new Tone.Noise()
    .connect(filter)
    .start();
  
  filter.frequency.value = 200
  noise.type = 'pink' // brown, white, pink 
  
  
  filterCutoff = createSlider(200, 10000, 1000, 0.1); 
  filterCutoff.position(100, 300);
}

function draw() {
  background(200)
  
  text(`Cutoff value: ${filterCutoff.value().toFixed(0)} Hz`, 100, 275)
  text(`Filter type: ${filter.type}`, 400, 275)

  filter.frequency.value = filterCutoff.value()
}

function keyPressed(){
   if (keyCode === 13) {
      ampEnvelope.triggerAttackRelease('2n')
  }
}


              
            
!
999px

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