webaudio_nexusui_tonejs/10_sequence.html at master · emoc/webaudio_nexusui_tonejs · GitHub

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<!DOCTYPE html>
<html>

<!--
    Composition musicale avec des sons de synthèse et des structures proposées par Tone.js

    NexusUI 2.1.6         http://nexus-js.github.io/ui/
    Tone.js 14.7.39       https://github.com/Tonejs/Tone.js
    Blueprint CSS 3.1.3   https://blueprintcss.dev/docs/grid

    10 février 2022 / pierre@lesporteslogiques.net / Debian 9.5 @ kirin

    https://github.com/emoc/webaudio_nexusui_tonejs
-->

<head>
    <meta charset="utf-8">
    <title>séquence</title>
    <script src="./Tone.js"></script>
</head>

<body>
    <button onclick="start();">START</button>
    <button onclick="stop();">STOP</button>

    <script>

        // *************************** synth ******************************
        const synth = new Tone.PolySynth(Tone.AMSynth, {
            volume: -10,
        }).toDestination();

        const pattern = new Tone.Pattern(function(time, note){
            synth.triggerAttackRelease(note, "16n");
        }, ["C2", "D4", "E5", "A6"], "randomWalk").start(0);

        pattern.loop = true;
        pattern.interval = "8n";

        // *************************** kick *******************************
        const kick = new Tone.MembraneSynth({
            octaves: 10,
            pitchDecay: 0.01
        }).toDestination();

        const kickPart = new Tone.Loop(((time) => {
            kick.triggerAttackRelease("C2", "8n", time);
        }), "2n").start(0);

        // *************************** bass *******************************
        const bass = new Tone.MonoSynth({
            volume: -10
        }).toDestination();

        const bassPart = new Tone.Sequence(((time, note) => {
            bass.triggerAttackRelease(note, "16n", time);
        }), ["C2", ["C3", ["C3", "D2"]], "E2", ["D2", "A1"]], "4n").start(0);

        bassPart.probability = 0.9;

        // ******************************************************************
        function start() {
            Tone.start();
            Tone.Transport.bpm.value = 90;
            Tone.Transport.start();
        }
        function stop() {
            Tone.Transport.stop();
        }
    </script>

</body>

</html>