cssAudio - Activefile-genericCSS - ActiveGeneric - ActiveHTML - ActiveImage - ActiveJS - ActiveSVG - ActiveText - Activefile-genericVideo - ActiveLovehtmlicon-new-collectionicon-personicon-teamlog-outoctocatpop-outspinnerstartv

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!
            
              html {background:#efefef; font-family:"Lato", "Lucida Grande","Lucida Sans Unicode", Tahoma, Sans-Serif; letter-spacing:-0.2px;}
body {margin:0px; padding:0px; overflow:hidden;}
#links {
  display:flex; padding:5px;
  justify-content:space-around;
  a {
    display:block; padding:5px 15px;
    border: 3px solid #343436; border-radius: 3px;
    background-color:#343436;
    text-align:center; text-decoration:none; color:#fff;
    &:hover {background-color:#4d4d50;}
  }
  
}
#screen, svg {width: 100vw; height: 100vh; padding:0px; margin:0px;}
#screen {
  position: relative;
  background: black;
}


            
          
!
            
              var audioApi = new window.AudioContext;

// variables
var audioBuffer,
    analyserNode,
    frequencyData = new Uint8Array(32),
    audioEl = document.querySelector('audio');

// create an audio API analyser node and connect to source
function createAnalyserNode(audioSource) {
  analyserNode = audioApi.createAnalyser();
  analyserNode.fftSize = 64;
  audioSource.connect(analyserNode);
}

// getUserMedia success callback -> pipe audio stream into audio API
function gotStream(stream) {
    // Create an audio input from the stream.
    var audioSource = audioApi.createMediaStreamSource(stream);
    createAnalyserNode(audioSource);
    animate();

}

// pipe in analysing to getUserMedia
  navigator.mediaDevices.getUserMedia({ audio: true, video: false })
  .then(gotStream);  


// enter and exit
var svg = d3.select('svg');
var petals = svg.selectAll('g .petal');

//<line x1="20" y1="100" x2="100" y2="20" stroke-width="2" stroke="black"/>
function animate() {

  requestAnimationFrame(animate);
  analyserNode.getByteFrequencyData(frequencyData);

  petals
    .data(frequencyData);

  petals
    .attr('fill', function(d,i) {
      return 'hsla('+i*24+',50%,'+Math.floor( (d/255)*100)+'%,0.8)';
    })

}
            
          
!
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