<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>Envelope</title> <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1"> <link rel="icon" type="image/png" sizes="174x174" href="./favicon.png"> <script src="https://cdnjs.cloudflare.com/ajax/libs/webcomponentsjs/2.4.3/webcomponents-bundle.js"></script> <link href="https://fonts.googleapis.com/css?family=Material+Icons&display=block" rel="stylesheet"/> <script src="../build/Tone.js"></script> <script src="./js/tone-ui.js"></script> <script src="./js/components.js"></script> </head> <body> <style type="text/css"> img { display: block; margin: 5px auto; width: 300px!important; } tone-trigger { margin-bottom: 10px; } </style> <tone-example label="Envelope"> <div slot="explanation"> Envelopes ramp amplitude, frequency or any other parameter over time. <a href="https://tonejs.github.io/docs/Envelope">Tone.Envelope</a> and the classes that extend it implement an <a href="https://en.wikipedia.org/wiki/Synthesizer#ADSR_envelope" target="_blank">ADSR</a> envelope type which splits its ramp into four distinct phases: Attack, Decay, Sustain, Release. <img src="https://upload.wikimedia.org/wikipedia/commons/e/ea/ADSR_parameter.svg"> </div> <div id="content"> <tone-momentary-button></tone-momentary-button> </div> </tone-example> <script type="text/javascript"> const env = new Tone.AmplitudeEnvelope({ attack: 0.11, decay: 0.21, sustain: 0.5, release: 1.2 }).toDestination(); // create an oscillator and connect it to the envelope const osc = new Tone.Oscillator({ partials: [3, 2, 1], type: "custom", frequency: "C#4", volume: -8, }).connect(env).start(); // bind the interface drawer().add({ tone: env, name: "Envelope" }).add({ tone: osc, }); document.querySelector("tone-momentary-button").addEventListener("down", e => env.triggerAttack()); document.querySelector("tone-momentary-button").addEventListener("up", e => env.triggerRelease()); </script> </body> </html>