<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>Quantization</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> #buttons { display: flex; margin: 10px 0; } #buttons tone-button { flex-grow: 1; margin: 5px; } #progress { margin: 10px; color: #8c8c8c; } </style> <tone-example label="Quantization"> <div slot="explanation"> Using the "@" symbol, <a href="https://github.com/Tonejs/Tone.js/wiki/Time" target="_blank">Time</a> expressions can be <a href="https://en.wikipedia.org/wiki/Quantization_(music)" target="_blank">quantized</a> (aligned to a subdivision). In this example, a note's start time is aligned to the given subdivision. <br><br> The Transport must be started </div> <div id="content"> <div id="progress"></div> <tone-play-toggle></tone-play-toggle> <div id="buttons"> <tone-button disabled id="at8n" label="@8n">@8n</tone-button> <tone-button disabled id="at4n" label="@4n">@4n</tone-button> <tone-button disabled id="at2n" label="@2n">@2n</tone-button> <tone-button disabled id="at1m" label="@1m">@1m</tone-button> </div> </div> </tone-example> <script type="text/javascript"> const polySynth = new Tone.PolySynth(Tone.Synth).toDestination(); function loop() { requestAnimationFrame(loop); // @ts-ignore const [bar, beat, sixteenth] = Tone.Transport.position.split(":"); document.querySelector("#progress").textContent = ` bar: ${bar}, beat: ${beat}, sixteenth: ${sixteenth} `; } loop(); // bind the interface document.querySelector("tone-play-toggle").addEventListener("start", e => { Tone.Transport.start(); // enable all of the buttons if it's playing // @ts-ignore Array.from(document.querySelectorAll("tone-button")).forEach(el => el.disabled = false); }); document.querySelector("tone-play-toggle").addEventListener("stop", () => { Tone.Transport.stop(); // disable all of the buttons if it's not playing // @ts-ignore Array.from(document.querySelectorAll("tone-button")).forEach(el => el.disabled = true); }); document.querySelector("#at8n").addEventListener("click", e => { polySynth.triggerAttackRelease("B4", "8n", "@8n"); }); document.querySelector("#at4n").addEventListener("click", e => { polySynth.triggerAttackRelease("E4", "8n", "@4n"); }); document.querySelector("#at2n").addEventListener("click", e => { polySynth.triggerAttackRelease("G3", "8n", "@2n"); }); document.querySelector("#at1m").addEventListener("click", e => { polySynth.triggerAttackRelease("C2", "8n", "@1m"); }); </script> </body> </html>