Amplitude (Meter) / Bairui Su

Creative generation toolmaker, believe that today's tool help shape tomorrow’s art. Creator Charming.js. Author @antv/g2@5.x.

Public

Edited

Feb 1

{

const size = 400;

const url = await FileAttachment("congas.m4a").url();

const sound = new Tone.Player(url).toDestination();

const play = () => (sound.state === "started" ? sound.stop() : sound.start());

sound.loop = true;

const meter = new Tone.Meter();

meter.normalRange = true;

sound.connect(meter);

const [state, dispose] = cm

.flow()

.let("r", 0)

.on("loop", () => (state.r = meter.getValue()))

.join();

invalidation.then(() => (dispose(), sound.stop()));

await Tone.loaded;

return svg.svg({ width: size, height: size, onclick: play }, [

svg.rect({ x: 0, y: 0, width: size, height: size, fill: "black" }),

svg.circle({

cx: size / 2,

cy: size / 2,

r: cm.$(() => cm.map(state.r, 0, size * 0.8)),

fill: "white"

})

]);

}

svg = cm.svg

import { cm } from "@charming-art/charmingjs-next"

Tone = require("tone")

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