Average

package.json

@@ -11,9 +11,15 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
+    "@babel/runtime": "^7.4.5",
     "p5": "^0.8.0"
   },
   "devDependencies": {
+    "@babel/core": "^7.4.5",
+    "@babel/plugin-proposal-class-properties": "^7.4.4",
+    "@babel/plugin-transform-runtime": "^7.4.4",
+    "@babel/preset-env": "^7.4.5",
+    "babel-loader": "^8.0.6",
     "css-loader": "^2.1.1",
     "html-webpack-plugin": "^3.2.0",
     "node-sass": "^4.12.0",

src/horizontal-lines.js

@@ -1,19 +1,19 @@
 import Worker from './sound.worker.js';
-import { getRMS, getPitch } from './util.js';
+import { getSpectrumData } from './util.js';
 
-export default class HorizontalLines {
+export default class HorizontalLinesAnimation {
   VOLUME_THRESHOLD = 20;
   LINE_MARGIN = 20;
-  MAX_LINES = window.innerWidth / LINE_MARGIN;
   FFT_SIZE = 256;
-  BASE_WIDTH = 2;
+  BASE_WIDTH = 4;
 
   spectrumPointHeight = 20;
+  maxLines = 10;
 
   line;
-  fresh;
+  fresh = false;
-  maxPitch;
+
-  minPitch;
+  averageSpectrum; 
 
   worker;
   analyser;
@@ -22,20 +22,28 @@ export default class HorizontalLines {
   constructor(audioCtx) {
     this.worker = new Worker();
     this.analyser = new AnalyserNode(audioCtx);
-    this.analyser.fftSize = FFT_SIZE;
+    this.analyser.fftSize = this.FFT_SIZE;
     this.audioProcessor = audioCtx.createScriptProcessor(this.FFT_SIZE * 2, 1, 1);
-    audioProcessor.onaudioprocess = this.audioProcess;
+    this.audioProcessor.onaudioprocess = () => this.audioProcess();
     this.analyser.connect(this.audioProcessor);
+    this.worker.onmessage = e => this.getAverageData(e.data);
   }
 
   setup(sketch) {
-    sketch.colorMode(sketch.HSL, 255);
+    sketch.colorMode(sketch.RGB, 255);
     sketch.background(0);
     this.resize();
   }
 
   resize() {
     this.spectrumPointHeight = window.innerHeight / this.analyser.frequencyBinCount;
+    this.maxLines = window.innerWidth / this.LINE_MARGIN;
+  }
+
+  getAverageData(data) {
+    this.averageSpectrum = data.averageSpectrum;
+    console.log('got average');
+    console.log(this.averageSpectrum);
   }
 
   audioProcess() {
@@ -44,21 +52,9 @@ export default class HorizontalLines {
 
     spectrum.reverse();
     
-    const volume = getRMS(spectrum);
+    const data = getSpectrumData(spectrum);
-    const pitch = getPitch(spectrum, volume);
+    this.worker.postMessage(data);
-    this.line = {
+    this.line = data;
-      spectrum,
-      volume,
-      pitch,
-    };
-
-    if (pitch > this.maxPitch) {
-      this.maxPitch = pitch;
-    }
-
-    if (pitch < this.minPitch) {
-      this.minPitch = pitch;
-    }
 
     this.fresh = true;
   }
@@ -76,21 +72,26 @@ export default class HorizontalLines {
     sketch.fill(0);
     sketch.rect(0, 0, this.LINE_MARGIN, window.innerHeight);
     
-    const lineBaseWidth = this.BASE_WIDTH;
     sketch.fill(`rgba(255, 255, 255, 0.2)`);
-    sketch.stroke(((this.line.pitch - this.minPitch) / (this.maxPitch - this.minPitch)) * 255);
+    sketch.stroke(255, 255, 255);
     sketch.strokeWeight(1);
     sketch.beginShape();
-    sketch.curveVertex(lineBaseWidth, -10);
+    sketch.curveVertex(this.BASE_WIDTH, -10);
-    sketch.curveVertex(lineBaseWidth, -10);
+    sketch.curveVertex(this.BASE_WIDTH, -10);
-    sketch.curveVertex(lineBaseWidth, 0);
+    sketch.curveVertex(this.BASE_WIDTH, 0);
     for (let i = 1; i < this.line.spectrum.length - 1; i++) {
-      const point = this.line.spectrum[i];
+      let point;
-      sketch.curveVertex(lineBaseWidth + point, i * this.spectrumPointHeight);
+      if (this.averageSpectrum) {
+        point = Math.max(this.line.spectrum[i] - (this.averageSpectrum[i] * 0.8), 0);
+        // point = 5 * (this.line.spectrum[i] / this.averageSpectrum[i]);
+      } else {
+        point = this.line.spectrum[i];
+      }
+      sketch.curveVertex(this.BASE_WIDTH + point, i * this.spectrumPointHeight);
     }
-    sketch.curveVertex(lineBaseWidth, window.innerHeight);
+    sketch.curveVertex(this.BASE_WIDTH, window.innerHeight);
-    sketch.curveVertex(lineBaseWidth, window.innerHeight + 10);
+    sketch.curveVertex(this.BASE_WIDTH, window.innerHeight + 10);
-    sketch.curveVertex(lineBaseWidth, window.innerHeight + 10);
+    sketch.curveVertex(this.BASE_WIDTH, window.innerHeight + 10);
     sketch.endShape();
   }
 }

src/index.js

@@ -1,22 +1,34 @@
 import p5 from 'p5';
 import './index.scss';
 
-import HorizontalLines from './horizontal-lines.js';
+import HorizontalLinesAnimation from './horizontal-lines.js';
+import SquaresAnimation from './squares.js';
 
 async function main() {
   const audioCtx = new AudioContext();
   const microphone = await navigator.mediaDevices.getUserMedia({ audio: true });
   const input = audioCtx.createMediaStreamSource(microphone);
 
-  let activeAnimation;
-
   const instance = new p5(( sketch ) => {
+    let activeAnimation;
+
+    window.onresize = () => {
+      sketch.resizeCanvas(window.innerWidth, window.innerHeight);
+      activeAnimation.resize();
+    };
+
+    function activate(animation) {
+      activeAnimation = animation;
+      input.connect(animation.analyser);
+      animation.setup(sketch);
+    }
+    
     sketch.setup = () => {
       sketch.createCanvas(window.innerWidth, window.innerHeight);
 
-      const horizontalLines = new HorizontalLines(analyser, sketch);
+      const horizontalLines = new HorizontalLinesAnimation(audioCtx);
-      activeAnimation = horizontalLines;
+      const squares = new SquaresAnimation(audioCtx);
-      input.connect(activeAnimation.analyser);
+      activate(horizontalLines);
     };
 
     sketch.draw = () => {
@@ -24,7 +36,7 @@ async function main() {
     };
 
     setTimeout(() => {
-      activactiveAnimation = 
+      // activactiveAnimation = 
     }, 1 * 60 * 1000);
   });
 }

src/sound.worker.js

@@ -1,26 +1,33 @@
-const PERIOD = 60 * 1000;
+const PERIOD = 20 * 1000;
 const data = [];
 let firstRun = true;
 
 function onDataPoint(event) {
-  console.log(event);
+  if (!firstRun) {
+    data.shift();
+  }
+  data.push(event.data);
 }
 
-self.addEventListener('message', onDataPoint);
+self.onmessage = onDataPoint;
 
 function calculateAndSend() {
   firstRun = false;
 
+  if (!data.length) {
+    return;
+  }
+
   let averagePitch = 0;
   let averageVolume = 0;
-  let averageSpectrum = [];
+  let averageSpectrum = (new Array(data[0].spectrum.length)).fill(0);
 
+  let minPitch = data[0].spectrum.length;
   let maxPitch = 0;
-  let minPitch = spectrum.length;
-  let maxVolume = 0;
   let minVolume = 500;
+  let maxVolume = 0;
 
-  for (const { volume, pitch, spectrum } in data) {
+  for (const { volume, pitch, spectrum } of data) {
     if (pitch > maxPitch) {
       maxPitch = pitch;
     } else if (pitch < minPitch) {
@@ -43,7 +50,7 @@ function calculateAndSend() {
 
   averageVolume /= data.length;
   averagePitch /= data.length;
-  averageSpectrum = averageSpectrum.map(p => p / spectrum.length);
+  averageSpectrum = averageSpectrum.map(p => p / data.length);
 
   self.postMessage({
     minVolume,

src/squares.js

@@ -1,37 +1,101 @@
-const VOLUME_THRESHOLD = 20;
+import Worker from './sound.worker.js';
-const GRID_SIZE = 20;
+import { getSpectrumData, getRandomBetween } from './util.js';
-const MAX_WIDTH = 5;
-const MAX_HEIGHT = 8;
-const FFT_SIZE = 1024;
 
-export function setup(sketch, analyser) {
+export default class SquaresAnimation {
-  sketch.background('rgb(20, 30, 30)');
+  VOLUME_THRESHOLD = 20;
-  sketch.colorMode(sketch.HSB);
+  GRID_SIZE = 20;
-  analyser.fftSize = FFT_SIZE;
+  MAX_WIDTH = 5;
-}
+  MAX_HEIGHT = 8;
+  FFT_SIZE = 1024;
+  
+  worker;
+  analyser;
+  audioProcessor;
 
-export function draw(sketch) {
+  minVolume = 360;
-  sketch.background('rgba(20, 30, 30, 0.01)');
+  maxVolume = 0;
-  if (!circle) {
+  minPitch = 360;
-    return;
+  maxPitch = 0;
+
+  circle;
+  fresh = false;
+
+  constructor(audioCtx) {
+    this.worker = new Worker();
+    this.analyser = new AnalyserNode(audioCtx);
+    this.analyser.fftSize = this.FFT_SIZE;
+    this.audioProcessor = audioCtx.createScriptProcessor(this.FFT_SIZE * 2, 1, 1);
+    this.audioProcessor.onaudioprocess = () => this.audioProcess();
+    this.analyser.connect(this.audioProcessor);
+    this.worker.onmessage = e => this.getAverageData(e.data);
   }
 
-  const color = ((circle.pitch - minPitch) / (maxPitch - minPitch)) * 360;
+  setup(sketch) {
-  const brightness = ((circle.volume - minVolume) / (maxVolume - minVolume));
+    sketch.background('rgb(20, 30, 30)');
-  sketch.stroke(color, 100, 100, brightness);
+    sketch.colorMode(sketch.HSB);
-  for (let i = 0; i < circle.spectrum.length + 2; i++) {
+    this.resize();
-    const p = circle.spectrum[i - 2] * i * i * i * i / 2;
+  }
-    const x = getRandomBetween(0, Math.floor(window.innerWidth / GRID_SIZE)) * GRID_SIZE;
+
-    const y = getRandomBetween(0, Math.floor(window.innerHeight / GRID_SIZE)) * GRID_SIZE;
+  resize() {}
-    // const width = getRandomBetween(1, MAX_WIDTH) * GRID_SIZE;
+
-    // const height = getRandomBetween(1, MAX_HEIGHT) * GRID_SIZE;
+  getAverageData(data) {
+    this.minVolume = data.minVolume;
+    this.maxVolume = data.maxVolume;
+
+    this.minPitch = data.minPitch;
+    this.maxPitch = data.maxPitch;
+  }
+
+  audioProcess() {
+    const spectrum = new Uint8Array(this.analyser.frequencyBinCount);
+    this.analyser.getByteFrequencyData(spectrum);
+    
+    spectrum.reverse();
+    
+    const data = getSpectrumData(spectrum);
+    const { volume, pitch } = data;
+    this.worker.postMessage(data);
+
+    if (volume > this.maxVolume) {
+      this.maxVolume = volume;
+    }
+
+    if (volume !== 0 && volume < this.minVolume) {
+      this.minVolume = volume;
+    }
+
+    if (pitch > this.maxPitch) {
+      this.maxPitch = pitch;
+    }
+
+    if (pitch < this.minPitch) {
+      this.minPitch = pitch;
+    }
+
+    this.circle = data; 
+    this.fresh = true;
+  }
+
+  draw(sketch) {
+    sketch.background('rgba(20, 30, 30, 0.01)');
+    if (!this.fresh) {
+      return;
+    }
+
+    const color = ((this.circle.pitch - this.minPitch) / (this.maxPitch - this.minPitch)) * 360;
+    const brightness = ((this.circle.volume - this.minVolume) / (this.maxVolume - this.minVolume));
+    sketch.stroke(color, 100, 100, brightness);
+    for (let i = 0; i < spectrum.length + 2; i++) {
+      const x = getRandomBetween(0, Math.floor(window.innerWidth / this.GRID_SIZE)) * this.GRID_SIZE;
+      const y = getRandomBetween(0, Math.floor(window.innerHeight / this.GRID_SIZE)) * this.GRID_SIZE;
       sketch.fill(color, 100, 100, brightness * 0.5);
-    sketch.beginShape();
+      sketch.beginShape();
-    sketch.vertex(x, y);
+      sketch.vertex(x, y);
-    sketch.vertex(x, y + GRID_SIZE);
+      sketch.vertex(x, y + this.GRID_SIZE);
-    sketch.vertex(x + GRID_SIZE, y + GRID_SIZE);
+      sketch.vertex(x + this.GRID_SIZE, y + this.GRID_SIZE);
-    sketch.vertex(x + GRID_SIZE, y);
+      sketch.vertex(x + this.GRID_SIZE, y);
-    sketch.vertex(x, y);
+      sketch.vertex(x, y);
-    sketch.endShape();
+      sketch.endShape();
+    }
   }
 }

src/util.js

@@ -1,24 +1,29 @@
-export function getRMS(spectrum) {
+export function getSpectrumData(spectrum) {
+  let highestPitch = 0;
   let rms = 0;
-  for (let i = 0; i < spectrum.length; i++) {
-    rms += spectrum[i] * spectrum[i];
-  }
-  rms /= spectrum.length;
-  rms = Math.sqrt(rms);
-  return rms;
-}
-
-export function getPitch(spectrum) {
   let cg = 0;
   let weight = 0;
   for (let i = 0; i < spectrum.length; i++) {
+    rms += spectrum[i] * spectrum[i];
     cg += spectrum[i] * i;
     weight += spectrum[i]; 
+    if (spectrum[i] > highestPitch) {
+      highestPitch = spectrum[i];
+    }
   }
-  return Math.floor(cg / weight);
+  rms /= spectrum.length;
+  rms = Math.sqrt(rms);
+  const pitch = Math.floor(cg / weight);
+  return {
+    spectrum,
+    volume: rms,
+    pitch,
+    highestPitch,
+  };
 }
 
-function getRandomBetween(min, max) {
+
+export function getRandomBetween(min, max) {
   return Math.floor(Math.random() * (max - min)) + min;
 }
 

webpack.config.js

@@ -5,7 +5,8 @@ module.exports = {
   entry: './src/index.js',
   output: {
     path: path.resolve(__dirname, 'dist'),
-    filename: 'bundle.js'
+    filename: 'bundle.js',
+    globalObject: `typeof self !== 'undefined' ? self : this`,
   },
   module: {
     rules: [
@@ -17,6 +18,23 @@ module.exports = {
           { loader: "sass-loader" },
         ],
       },
+      {
+        test: /\.js$/,
+        exclude: /node_modules/,
+        use: {
+          loader: 'babel-loader',
+          options: {
+            presets: ['@babel/preset-env'],
+            plugins: [
+              '@babel/plugin-transform-runtime',
+              [
+                '@babel/plugin-proposal-class-properties',
+                { loose: true },
+              ],
+            ],
+          },
+        },
+      },
       {
         test: /\.worker\.js$/,
         use: { loader: 'worker-loader' },