MindfulMinun
d4fcdb5f12
Glitches mainly caused by assuming output array is empty. It's not empty, it contains the samples of the previous chunk - Integral and derivative processors no longer "click" - Overlap no longer screams. - Zero processor
232 lines
9.3 KiB
HTML
232 lines
9.3 KiB
HTML
<!doctype html>
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<!--
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Made with love by MindfulMinun
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https://benjic.xyz
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-->
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<html lang="en-US" dir="ltr">
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<head>
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<meta charset="utf-8">
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<title>D♭</title>
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<meta http-equiv="X-UA-Compatible" content="IE=edge">
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<meta name="viewport" content="width=device-width">
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<meta name="theme-color" content="#1e1e1e">
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<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/normalize/8.0.1/normalize.min.css">
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<style media="screen">
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*, *::before, *::after { box-sizing: border-box; }
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:root {
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--input-color: rgb(255 255 255 / .52);
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--input-border: #424242;
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}
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html, body {
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font-family: "Roboto", Helvetica, Arial, sans-serif;
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line-height: 1.15;
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height: 100%;
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margin: 0;
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color: white;
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background-color: black;
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}
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body { display: flex; }
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a[href] { color: var(--accent); }
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input, audio {
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display: block;
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margin: 1em 0;
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}
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audio {
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width: 100%;
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}
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button {
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/* display: inline-block;
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background: 0; border: 0; font: inherit; color: inherit;
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border: 1px solid #727272;
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padding: .25em .5em;
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cursor: pointer; */
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background: 0; border: 0; font: inherit;
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color: var(--input-color);
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font-size: 87.5%;
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border: 2px solid var(--input-border);
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outline: 0;
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padding: .5em .75em;
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}
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select {
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/* background: 0; border: 0; font: inherit; color: inherit; */
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-moz-appearance: none;
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-webkit-appearance: none;
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appearance: none;
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background: 0;
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background-image: url(data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNHB4IiBoZWlnaHQ9IjI0cHgiIHZpZXdCb3g9IjAgMCAyNCAyNCIgZmlsbD0iIzU0NTQ1NCI+PHBhdGggZD0iTTcgMTBsNSA1IDUtNXoiPjwvcGF0aD48L3N2Zz4=);
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background-position: right 50%;
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background-repeat: no-repeat;
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outline: 0;
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border: 2px solid var(--input-border);
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border-radius: 0;
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color: var(--input-color);
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font: inherit;
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font-size: 87.5%;
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/* padding: .5em 1.5em .5em 1em; */
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padding: .5em 1.5em .5em .5em;
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min-width: 120px;
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}
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option { color: initial; }
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option[disabled] { color: rgb(0 0 0 / .3); }
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button:focus,
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select:focus {
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border-color: #448aff;
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}
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button, select {
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backdrop-filter: blur(2px);
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}
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canvas {
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position: fixed;
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top: 0; left: 0; bottom: 0; right: 0;
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width: 100%;
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height: 100%;
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background-color: #000;
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}
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.container {
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width: 840px;
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max-width: 100%;
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margin: 0 auto;
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padding: 1em;
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z-index: 1;
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}
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.warn {
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border: 2px solid red;
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padding: 0 1em;
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}
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.spacer {
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/* height: 90vh; */
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height: 1000px;
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height: 90vh;
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height: calc(100vh - 6rem);
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}
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.credits {
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text-align: center;
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font-style: italic;
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margin: 3rem auto;
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opacity: .5;
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}
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</style>
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<!-- <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/[email protected]/dist/katex.min.css" integrity="sha384-zB1R0rpPzHqg7Kpt0Aljp8JPLqbXI3bhnPWROx27a9N0Ll6ZP/+DiW/UqRcLbRjq" crossorigin="anonymous">
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<script defer src="https://cdn.jsdelivr.net/npm/[email protected]/dist/katex.min.js" integrity="sha384-y23I5Q6l+B6vatafAwxRu/0oK/79VlbSz7Q9aiSZUvyWYIYsd+qj+o24G5ZU2zJz" crossorigin="anonymous"></script>
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<script defer src="https://cdn.jsdelivr.net/npm/[email protected]/dist/contrib/auto-render.min.js" integrity="sha384-kWPLUVMOks5AQFrykwIup5lo0m3iMkkHrD0uJ4H5cjeGihAutqP0yW0J6dpFiVkI" crossorigin="anonymous"
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onload="renderMathInElement(document.body, {
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fleqn: true,
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delimiters: [
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{ left: '$$', right: '$$', display: true },
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{ left: '$', right: '$', display: false }
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]
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});"></script> -->
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</head>
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<body>
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<canvas></canvas>
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<div class="container">
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<div class="warn">
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<p>
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There’s currently a bug in Chrome that causes the <code>subtract-overlap</code> filter to glitch and scream.
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Refrain from using it, it’ll hurt your years X(
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</p>
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<p>(This glitch doesn’t occur in Firefox, so maybe try that instead :) )</p>
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</div>
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<p>
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Drag and drop an audio file anywhere or <button id="choose">choose one from your filesystem.</button>
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</p>
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<p>
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<label>
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Filter:
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<select id="processorSelect">
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<option value="noop" selected>noop</option>
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<option value="derivative">derivative</option>
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<option value="integral">integral</option>
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<option value="subtract-overlap">subtract-overlap</option>
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<option value="isolate-overlap" disabled>isolate-overlap</option>
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<option value="bit-crusher-sr8">bit-crusher-sr8 (Sample-rate reduction)</option>
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<option value="bit-crusher-res">bit-crusher-res (bit-depth reduction)</option>
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<option value="bit-crusher-both">bit-crusher-both</option>
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<option value="mono">mono</option>
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<option value="zeroes">zeroes</option>
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</select>
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</label>
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<label>
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Visualizer:
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<select id="visualizerSelect">
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<option value="0" selected>Oscilloscope</option>
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<option value="1">Linear spectrogram</option>
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</select>
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</label>
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</p>
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<audio controls></audio>
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<ul>
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<li>
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<code>noop</code>
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<p>Leaves the audio unchanged.</p>
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</li>
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<li>
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<code>derivative</code>
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<p>
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Approximates the first derivative of the audio as a function respect to time.
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Sounds like a <strong>high-pass filter</strong>.
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</p>
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</li>
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<li>
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<code>integral</code>
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<p>
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Approximates the first integral of the audio as a function respect to time. Plus C of zero. Sounds like a <strong>low-pass filter</strong>.
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</p>
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</li>
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<li>
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<code>subtract-overlap</code>
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<p>Inverts the amplitude of every even-numbered channel and merges all channels to mono. This effectively cancels the sounds the left and right channels share in common. Quick-and-dirty way of removing vocals.</p>
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</li>
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<li>
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<code>isolate-overlap</code>
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<p>The opposite of subtract-overlap. You think it'd be simple but I can't get it to work :/</p>
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</li>
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<!-- bit-crusher-sr8
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bit-crusher-res -->
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<li>
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<code>bit-crusher-sr8</code>
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<p>Bitcrusher. Works by taking the average of 8 samples of the input and setting that average as the output for those 8 samples, effectively <strong>reducing the sampling rate</strong>.</p>
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</li>
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<li>
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<code>bit-crusher-res</code>
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<p>Bitcrusher. Works by <strong>reducing the resolution of each sample</strong> from a 32-bit float to a 8-bit float.</p>
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</li>
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<li>
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<code>bit-crusher-both</code>
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<p>Bitcrusher. Combines the output of bit-crusher-sr8 and bit-crusher-res.</p>
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</li>
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<li>
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<code>mono</code>
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<p>
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Converts the audio to mono by taking the arithmetic average of the samples of each channel.
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</p>
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</li>
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<li>
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<code>zeroes</code>
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<p>Outputs no sound.</p>
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</li>
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</ul>
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<p class="credits">
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Made with :3c by <a href="https://benjic.xyz">MindfulMinun</a>
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•
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<a href="https://github.com/MindfulMinun/d-flat">Source code</a>
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</p>
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<div class="spacer"></div>
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</div>
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<input id="file" type="file" hidden>
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<script src="./dist/main.js"></script>
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</body>
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</html>
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