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localaudio.html
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<!doctype html>
<html lang="en" class="h-100" data-bs-theme="auto">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<meta name="color-scheme" content="light dark" />
<meta name="description" content="Reverb effect written in JavaScript." />
<meta name="author" content="Masashi Yoshikawa" />
<!-- ogp -->
<meta property="og:title" content="JavaScript Reverb Effect Test" />
<meta property="og:type" content="article" />
<meta property="og:url" content="https://logue.github.io/Reverb.js/" />
<meta
property="og:image"
content="https://repository-images.githubusercontent.com/194181712/20bdd780-9995-11e9-8811-42e3b44d1cec"
/>
<meta property="og:site_name" content="Logue's Lab" />
<meta
property="og:description"
content="Reverb effect written in JavaScript."
/>
<meta property="fb:app_id" content="129144050466298" />
<meta
property="article:publisher"
content="https://www.facebook.com/logue256"
/>
<meta name="twitter:card" content="Summary" />
<meta name="twitter:site" content="@logue256" />
<meta name="twitter:title" content="JavaScript Reverb Effect Test" />
<meta name="twitter:url" content="https://logue.dev/Reverb.js/" />
<meta
name="twitter:description"
content="Reverb effect written in JavaScript."
/>
<meta
name="twitter:image"
content="https://repository-images.githubusercontent.com/194181712/20bdd780-9995-11e9-8811-42e3b44d1cec"
/>
<title>Reverb.js Demo</title>
<!-- Google tag (gtag.js) -->
<script
async
src="https://www.googletagmanager.com/gtag/js?id=G-2Y2FW3QEG4"
></script>
<script>
window.dataLayer = window.dataLayer || [];
function gtag() {
dataLayer.push(arguments);
}
gtag('js', new Date());
gtag('config', 'G-2Y2FW3QEG4');
</script>
<!-- Bootstrap core CSS -->
<link
href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/css/bootstrap.min.css"
rel="stylesheet"
integrity="sha384-T3c6CoIi6uLrA9TneNEoa7RxnatzjcDSCmG1MXxSR1GAsXEV/Dwwykc2MPK8M2HN"
crossorigin="anonymous"
/>
<link
rel="stylesheet"
href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.1/font/bootstrap-icons.css"
/>
</head>
<body class="d-flex flex-column h-100">
<header>
<nav class="navbar navbar-expand-md navbar-dark fixed-top bg-dark">
<div class="container-fluid d-flex justify-content-between">
<a class="navbar-brand" href="#">Reverb.js</a>
<button
class="navbar-toggler"
type="button"
data-bs-toggle="collapse"
data-bs-target="#navbarCollapse"
aria-controls="navbarCollapse"
aria-expanded="false"
aria-label="Toggle navigation"
>
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse flex-grow-0" id="navbarCollapse">
<ul class="navbar-nav">
<li class="nav-item">
<a class="nav-link" href="./">Demo</a>
</li>
<li class="nav-item">
<a
class="nav-link active"
aria-current="page"
href="./localaudio.html"
>
LocalAudio Demo
</a>
</li>
<li class="nav-item">
<a class="nav-link" href="https://github.com/logue/Reverb.js">
<em class="bi bi-github"></em>
</a>
</li>
</ul>
<ul class="navbar-nav">
<li class="nav-item dropdown">
<a
class="nav-link dropdown-toggle"
href="#"
id="navbarDarkDropdownMenuLink"
role="button"
data-bs-toggle="dropdown"
aria-expanded="false"
>
See Also
</a>
<ul
class="dropdown-menu dropdown-menu-end"
aria-labelledby="navbarDarkDropdownMenuLink"
>
<li>
<a
class="dropdown-item"
href="https://github.com/logue/smfplayer.js/"
>
smfplayer.js
</a>
</li>
<li>
<a
class="dropdown-item"
href="https://github.com/logue/sf2synth.js/"
>
sf2synth.js
</a>
</li>
<li>
<a
class="dropdown-item"
href="https://github.com/logue/Reverb.js/"
>
Reverb.js
</a>
</li>
<li>
<a
class="dropdown-item"
href="https://github.com/logue/MabiMmlEmu/"
>
MabiMmlEmu
</a>
</li>
</ul>
</li>
</ul>
</div>
</div>
</nav>
</header>
<!-- Begin page content -->
<main role="main" class="flex-shrink-0 my-3">
<div class="container-fluid bg-body-tertiary p-5 mb-3">
<h1 class="display-5 fw-bold">Reverb.js Local Audio Demo</h1>
<p class="fs-4">Play own audio file.</p>
<div>
<label for="file" class="form-label">Load Audio file</label>
<input type="file" class="form-control" id="file" accept="audio/*" />
</div>
<div class="my-3">
<button id="play" class="btn btn-primary" disabled>
<em class="bi bi-play"></em>
Play
</button>
<button id="stop" class="btn btn-secondary" disabled>
<em class="bi bi-stop"></em>
Stop
</button>
</div>
</div>
<div class="container">
<div class="row">
<div class="col">
<h2>Reverb Control</h2>
<p>
Changing these values will regenerate the impulse response each
time, but due to its nature, it will take some time to see the
effect. It may be helpful to maximize the value of Wet.
</p>
<div class="form-check form-switch">
<input id="reverb" type="checkbox" class="form-check-input" />
<label class="form-check-label" for="reverb">Reverb</label>
</div>
<div class="form-check form-switch">
<input type="checkbox" class="form-check-input" id="reverse" />
<label class="form-check-label" for="reverse">
Reverse Inpulse Response
</label>
</div>
</div>
<div class="col">
<h2>Spectrum Analysis</h2>
<div class="overflow-auto">
<canvas id="canvas" class="d-none"></canvas>
<img id="test" class="d-none" alt="test" />
<canvas id="graph"></canvas>
</div>
</div>
</div>
<section class="mb-3">
<h3>Impulse response generation algorithm settings</h3>
<p>
<a
href="https://github.com/thi-ng/umbrella/tree/develop/packages/colored-noise"
target="_blank"
>
@thi.ng/colored-noise
<em class="bi bi-box-arrow-up-right"></em>
</a>
is used for random noise generation process used for impulse
response generation. These settings are the parameters of the noise
generation process.
</p>
<fieldset>
<legend>Noise algorithm</legend>
<div class="row align-items-center">
<div class="col-auto">
<div class="form-check">
<input
class="form-check-input"
type="radio"
name="noise"
id="blue"
value="blue"
/>
<label class="form-check-label" for="blue">
<em
class="bi bi-square-fill"
style="color: var(--bs-blue)"
></em>
Blue Noise
</label>
</div>
</div>
<div class="col-auto">
<div class="form-check">
<input
class="form-check-input"
type="radio"
name="noise"
id="green"
value="green"
/>
<label class="form-check-label" for="green">
<em
class="bi bi-square-fill"
style="color: var(--bs-green)"
></em>
Green Noise
</label>
</div>
</div>
<div class="col-auto">
<div class="form-check">
<input
class="form-check-input"
type="radio"
name="noise"
id="pink"
value="pink"
/>
<label class="form-check-label" for="pink">
<em
class="bi bi-square-fill"
style="color: var(--bs-pink)"
></em>
Pink Noise
</label>
</div>
</div>
<div class="col-auto">
<div class="form-check">
<input
class="form-check-input"
type="radio"
name="noise"
id="red"
value="red"
/>
<label class="form-check-label" for="red">
<em
class="bi bi-square-fill"
style="color: var(--bs-red)"
></em>
Red (Brown) Noise
</label>
</div>
</div>
<div class="col-auto">
<div class="form-check">
<input
class="form-check-input"
type="radio"
name="noise"
id="violet"
value="violet"
/>
<label class="form-check-label" for="violet">
<em
class="bi bi-square-fill"
style="color: var(--bs-purple)"
></em>
Violet Noise
</label>
</div>
</div>
<div class="col-auto">
<div class="form-check">
<input
class="form-check-input"
type="radio"
name="noise"
id="white"
value="white"
checked
/>
<label class="form-check-label" for="white">
<em class="bi bi-square"></em>
White Noise
</label>
</div>
</div>
</div>
<p class="small">
<a
href="https://en.wikipedia.org/wiki/Colors_of_noise"
target="_blank"
>
What is colord noise?
<em class="bi bi-box-arrow-up-right"></em>
</a>
</p>
</fieldset>
<div class="row">
<div class="col-md">
<label for="peaks" class="form-label">Random noise peaks</label>
<input
type="number"
class="form-control"
id="peaks"
value="2"
step="1"
min="0"
max="64"
disabled
/>
<div id="scale-help" class="form-text">
The number of frequency band peaks when generating noise. This
value is ignored for white noise.
</div>
</div>
<div class="col-md">
<label for="scale" class="form-label">Random noise scales</label>
<input
type="number"
class="form-control"
id="scale"
value="1"
step="1"
min="0"
max="64"
/>
</div>
<div class="col-md">
<label for="randomAlgorithm" class="form-label">
Random Generator
</label>
<select id="randomAlgorithm" class="form-select" disabled>
<option value="SYSTEM" selected="selected">
SYSTEM (Default)
</option>
<option value="CRYPTO">CRYPTO</option>
</select>
</div>
</div>
</section>
<section class="mb-3">
<h3>Impulse response setting</h3>
<p>
Generate damped sound from the generated noise and make it an
impulse response. These are its settings.
</p>
<div class="row">
<div class="col-md">
<label for="time" class="form-label" aria-describedby="time-help">
Time
</label>
<input
type="range"
class="form-range"
title="1.1"
value="2"
min="0"
max="50"
id="time"
/>
<div id="time-help" class="form-text">Room size</div>
</div>
<div class="col-md">
<label for="decay" class="form-label">Decay</label>
<input
type="range"
class="form-range"
title="2"
value="2"
min="0"
max="100"
id="decay"
/>
<div id="decay-help" class="form-text">
Hardness of room wall size
</div>
</div>
<div class="col-md">
<label for="delay" class="form-label">Delay</label>
<input
type="range"
class="form-range"
title="0"
value="0"
min="0"
max="100"
id="delay"
/>
<div id="delay-help" class="form-text">
Delays due to obstacles in front of room walls
</div>
</div>
<div class="col-md">
<label for="mix" class="form-label">Dry / Wet</label>
<input
type="range"
id="mix"
class="form-range"
min="0"
max="1"
step="0.05"
value="0.5"
title="0.5"
/>
<div id="delay-help" class="form-text">
Closer to the original sound or closer to the effector
</div>
</div>
</div>
</section>
<section class="mb-3">
<h3>Filter for Impulse response</h3>
<p>
If the value of the filter is allpass, the filtering will be
bypassed.
</p>
<div class="row">
<div class="col-md">
<label for="filter" class="form-label">Filter Type</label>
<select id="filter" class="form-select">
<option value="allpass" selected="selected">
allpass (Through)
</option>
<option value="bandpass">bandpass</option>
<option value="highpass">highpass</option>
<option value="highshelf">highshelf</option>
<option value="lowpass">lowpass</option>
<option value="lowshelf">lowshelf</option>
<option value="notch">notch</option>
<option value="peaking">peaking</option>
</select>
</div>
<div class="col-md">
<label for="freq" class="form-label">Filter frequency</label>
<input
type="range"
class="form-range"
value="2500"
min="20"
max="5000"
step="5"
id="freq"
title="2500"
/>
</div>
<div class="col-md">
<label for="freq" class="form-label">Q value</label>
<input
type="range"
class="form-range"
value="1"
min=".0001"
max="10"
step=".0005"
id="q"
title="1"
/>
</div>
</div>
</section>
</div>
</main>
<footer class="footer mt-auto py-3 bg-body-tertiary">
<div class="container">
<address class="text-muted">
© 2019-2024 by
<a href="http://logue.dev/">Logue</a>
. Licensed under the
<a href="http://opensource.org/licenses/mit-license.php">
MIT License
</a>
.
</address>
</div>
</footer>
<script
src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/js/bootstrap.bundle.min.js"
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<script type="module">
import Reverb from './src/Reverb';
// Setup Audio Context
const AudioCtx = new AudioContext();
// Defreeze AudioContext for iOS.
document.addEventListener('touchstart', initAudioContext);
function initAudioContext() {
document.removeEventListener('touchstart', initAudioContext);
// wake up AudioContext
const emptySource = AudioCtx.createBufferSource();
emptySource.start();
emptySource.stop();
}
// Audio object
const audio = new Audio();
// Audio Source
const AudioSrc = AudioCtx.createMediaElementSource(audio);
// Analyzer Node
const AnalyserNode = AudioCtx.createAnalyser();
// Setup Reverb Class
const reverb = new Reverb(AudioCtx);
// decode audio
const LoadSample = async input => {
if (audio) {
audio.pause();
audio.src = '';
}
audio.src = await loadDataUri(input);
};
// Load array buffer
const loadDataUri = async input => {
document.getElementById('play').disabled = 'disabled';
document.getElementById('stop').disabled = 'disabled';
return await new Promise(resolve => {
if (input instanceof File) {
const reader = new FileReader();
reader.onload = event => {
resolve(event.target.result);
document.getElementById('play').disabled = '';
document.getElementById('stop').disabled = '';
};
reader.readAsDataURL(input);
} else {
fetch(input)
.then(response => {
return {
mime: response.headers.get('content-type'),
buffer: response.arrayBuffer(),
};
})
.then(res => {
// to base64
let binary = '';
let bytes = [].slice.call(new Uint8Array(res.buffer));
bytes.forEach(b => (binary += String.fromCharCode(b)));
const base64 = window.btoa(binary);
// prepend data scheme
resolve('data:' + res.mime + ';base64;' + base64);
document.getElementById('play').disabled = '';
document.getElementById('stop').disabled = '';
});
}
}).catch(e => alert(e));
};
const handleFileSelect = async e => {
const file = e.target.files[0];
AudioSrc.buffer = await LoadSample(file);
};
// Reverb switch handler
const setReverb = () => {
AudioSrc.disconnect();
if (document.getElementById('reverb').checked) {
// Connect Reverb
reverb.connect(AudioSrc).connect(AnalyserNode);
} else {
reverb.disconnect(AudioSrc).connect(AnalyserNode);
}
AnalyserNode.connect(AudioCtx.destination);
};
/** Draw Texture Functions */
const PIXEL_RATIO = () => {
const ctx = document.createElement('canvas').getContext('2d'),
dpr = window.devicePixelRatio || 1,
bsr =
ctx.webkitBackingStorePixelRatio ||
ctx.mozBackingStorePixelRatio ||
ctx.msBackingStorePixelRatio ||
ctx.oBackingStorePixelRatio ||
ctx.backingStorePixelRatio ||
1;
return dpr / bsr;
};
// Create retina quality canvas
const createRetinaCanvas = (w, h, ratio) => {
if (!ratio) {
ratio = PIXEL_RATIO;
}
const canvas = document.getElementById('canvas');
// const canvas = document.createElement('canvas');
canvas.width = w * ratio;
canvas.height = h * ratio;
canvas.style.width = w + 'px';
canvas.style.height = h + 'px';
canvas.getContext('2d').setTransform(ratio, 0, 0, ratio, 0, 0);
return canvas;
};
// Spectrum Analysis canvas size
const SPRITE_HEIGHT = 256;
const SPRITE_WIDTH = 512;
// Sprite Canvas
const spriteCanvas = createRetinaCanvas(SPRITE_WIDTH, SPRITE_HEIGHT);
// Draw Graph
const DrawGraph = () => {
const AnalyseData = new Float32Array(1024);
AnalyserNode.getFloatFrequencyData(AnalyseData);
const sprite = spriteCanvas.getContext('2d', { antialias: false });
// Background
//sprite.fillStyle = "#343a40";
//sprite.fillRect(0, 0, SPRITE_WIDTH, SPRITE_HEIGHT);
sprite.clearRect(0, 0, spriteCanvas.width, spriteCanvas.height);
// Graph
const grad = sprite.createLinearGradient(0, 0, spriteCanvas.width, 0);
grad.addColorStop(0, 'rgb(255, 0, 0)');
grad.addColorStop(0.2, 'rgb(255, 255, 0)');
grad.addColorStop(0.4, 'rgb(0, 255, 0)');
grad.addColorStop(0.6, 'rgb(0, 255, 255)');
grad.addColorStop(0.8, 'rgb(0, 0, 255)');
grad.addColorStop(1, 'rgb(255, 0, 255)');
sprite.fillStyle = grad;
//sprite.fillStyle = document.getElementById('reverb').checked ? "#17a2b8" : "#28a745";
for (let i = 0; i < spriteCanvas.width; ++i) {
const f = (AudioCtx.sampleRate * i) / 1024;
let y = 128 + (AnalyseData[i] + 48.16) * 2.56 + 1;
sprite.fillRect(i, spriteCanvas.height - y, 1, y);
}
return spriteCanvas.toDataURL();
};
// Draw Axis
const DrawAxis = () => {
const sprite = spriteCanvas.getContext('2d', { antialias: false });
// y axis (dB)
for (let d = -50; d < 50; d += 10) {
const y = (SPRITE_HEIGHT / 2 - (d * SPRITE_HEIGHT) / 100) | 0;
// Line
sprite.fillStyle = '#6c757d';
sprite.fillRect(20, y, SPRITE_WIDTH, 1);
// Label
sprite.fillStyle = '#fd7e14';
sprite.fillText(d + 'dB', 5, y);
}
sprite.fillStyle = '#ffc107';
sprite.fillRect(20, SPRITE_HEIGHT / 2, SPRITE_WIDTH, 1);
// x axis (frequency)
for (let f = 2000; f < AudioCtx.sampleRate / 2; f += 2000) {
const x = ((f * 1024) / AudioCtx.sampleRate) | 0;
// Line
sprite.fillStyle = '#6c757d';
sprite.fillRect(x, 0, 1, 245);
// Label
sprite.fillStyle = '#e83e8c';
sprite.fillText(f / 1000 + 'kHz', x - 10, 255);
}
return spriteCanvas.toDataURL();
};
// スプライトのデバッグ
const debug = src => {
const canvas = document.getElementById('canvas');
canvas.style.width = SPRITE_WIDTH + 'px';
canvas.style.height = SPRITE_HEIGHT + 'px';
canvas.width = SPRITE_WIDTH;
canvas.height = SPRITE_HEIGHT;
const img = document.getElementById('test');
img.style.width = SPRITE_WIDTH + 'px';
img.style.height = SPRITE_HEIGHT + 'px';
img.src = src;
// ctx.clearRect(0, 0, canvas.width, canvas.height);
const image = new Image();
image.addEventListener('load', () => {
canvas.getContext('2d').drawImage(image, 0, 0); // Or at whatever offset you like
});
image.src = src;
};
/** 3D Spectrum Analyzer Code */
// 3D canvas size
const CANVAS_WIDTH = 960;
const CANVAS_HEIGHT = 540;
// Create renderer
const renderer = new THREE.WebGLRenderer({
canvas: document.querySelector('#graph'),
});
renderer.setPixelRatio(window.devicePixelRatio);
renderer.setSize(CANVAS_WIDTH, CANVAS_HEIGHT);
// Create Scene
const scene = new THREE.Scene();
// Create camera
const camera = new THREE.PerspectiveCamera(
30,
CANVAS_WIDTH / CANVAS_HEIGHT,
1,
2000
);
// Move Initial camera position (x, y, z)
camera.position.set(100, 50, 1000);
//const camera = new THREE.OrthographicCamera(-CANVAS_WIDTH, CANVAS_WIDTH, CANVAS_HEIGHT, -CANVAS_HEIGHT, 1, 100000);
// Append Fog
// new THREE.Fog(color, start distance, end distance);
scene.fog = new THREE.Fog(0x000000, 1000, 2000);
//debug(DrawAxis())
const AxisMesh = new THREE.Mesh(
// Plane
new THREE.PlaneGeometry(SPRITE_WIDTH, SPRITE_HEIGHT, 5, 5),
// Texture
new THREE.MeshBasicMaterial({
transparent: true,
needsUpdate: true,
map: new THREE.TextureLoader().load(DrawAxis()),
side: THREE.DoubleSide,
})
);
// Move Mesh object
AxisMesh.position.set(0, 0, 0);
scene.add(AxisMesh);
let depth = 0;
let geometries = [];
let materials = [];
let textures = [];
let meshs = [];
const MAX_DEPTH = 1024;
// Loop event
const tick = () => {
// Draw Texture image
const sprite = DrawGraph();
debug(sprite);
textures[depth] = new THREE.TextureLoader().load(sprite);
geometries[depth] = new THREE.PlaneGeometry(
SPRITE_WIDTH,
SPRITE_HEIGHT,
5,
5
);
materials[depth] = new THREE.MeshBasicMaterial({
color: 0xccddee,
transparent: true,
needsUpdate: true,
map: textures[depth],
side: THREE.DoubleSide,
});
// Mesh object
meshs[depth] = new THREE.Mesh(geometries[depth], materials[depth]);
// Move Mesh object
meshs[depth].position.set(0, 0, depth);
AxisMesh.position.set(0, 0, depth);
// Append Mesh object to 3D scene
scene.add(meshs[depth]);
// Render
renderer.render(scene, camera);
// Move Camera
camera.position.z = depth + 650;
// camera.zoom = 2;
camera.updateProjectionMatrix();
// Look to origin
camera.lookAt(new THREE.Vector3(0, 0, depth));
// Remove old Mesh
if (depth > MAX_DEPTH) {
scene.remove(meshs[depth - MAX_DEPTH]);
// meshs[depth - MAX_DEPTH].dispose();
geometries[depth - MAX_DEPTH].dispose();
materials[depth - MAX_DEPTH].dispose();
textures[depth - MAX_DEPTH].dispose();
// Manual Gabarge Collection
delete geometries[depth - MAX_DEPTH];
delete materials[depth - MAX_DEPTH];
delete textures[depth - MAX_DEPTH];
}
// incriment depth
depth++;
// Update Animation
requestAnimationFrame(tick);
};
// Regist Event
window.addEventListener('load', async () => {
audio.src = await LoadSample('./demo.flac');
// Play button
document.getElementById('play').addEventListener('click', async () => {
if (AudioCtx.state == 'suspended') AudioCtx.resume();
setReverb();
audio.play();
});
// Stop button
document.getElementById('stop').addEventListener('click', () => {
audio.stop();
});
// File form
document.getElementById('file').addEventListener('dragover', e => {
e.stopPropagation();
e.preventDefault();
e.dataTransfer.dropEffect = 'copy';
return false;
});
document
.getElementById('file')
.addEventListener('drag', handleFileSelect, false);
document
.getElementById('file')
.addEventListener('change', handleFileSelect, false);
// Reverb switch button
document.getElementById('reverb').addEventListener('click', setReverb);
// Reverse checkbox
document
.getElementById('reverse')
.addEventListener('click', e => reverb.reverse(e.target.checked));
// Reverb dualation time
document.getElementById('time').addEventListener('change', e => {
reverb.time(e.target.value);
e.target.title = e.target.value;
});
// Decay time
document.getElementById('decay').addEventListener('change', e => {
reverb.decay(e.target.value);
e.target.title = e.target.value;
});
// Delay time
document.getElementById('delay').addEventListener('change', e => {
reverb.delay(e.target.value);
e.target.title = e.target.value;
});
// Filter select box
document.getElementById('filter').addEventListener('change', e => {
reverb.filterType(e.target.value);
e.target.title = e.target.value;
});
// Filter frequency
document.getElementById('freq').addEventListener('change', e => {
reverb.filterFreq(e.target.value);
e.target.title = e.target.value;
});
// Filter quality
document.getElementById('q').addEventListener('change', e => {
reverb.filterQ(e.target.value);
e.target.title = e.target.value;
});
// Dry/Wet
document.getElementById('mix').addEventListener('change', e => {
reverb.mix(e.target.value);
e.target.title = e.target.value;
});
// Noise Type
document.querySelectorAll('[name=noise]').forEach(dom =>
dom.addEventListener('click', e => {
document.getElementById('peaks').disabled =
e.target.value === 'white';
reverb.setNoise(e.target.value);
})
);
document.getElementById('peaks').addEventListener('change', e => {
reverb.peaks(e.target.value);
e.target.title = e.target.value;
});
document.getElementById('scale').addEventListener('change', e => {
reverb.scale(e.target.value);
e.target.title = e.target.value;
});
document
.getElementById('randomAlgorithm')
.addEventListener('change', e => {
reverb.randomAlgorithm(e.target.value);
e.target.title = e.target.value;
});
// Execute Animation Thread
tick();
});
</script>
</body>
</html>