151 lines
6.3 KiB
HTML
151 lines
6.3 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
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<title>wavesurfer.js | Spectrogram plugin</title>
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<link href="data:image/gif;" rel="icon" type="image/x-icon" />
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<!-- Bootstrap -->
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<link href="//maxcdn.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css" rel="stylesheet">
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<link rel="stylesheet" href="../css/style.css" />
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<link rel="stylesheet" href="../css/ribbon.css" />
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<!-- wavesurfer.js -->
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<script src="../../dist/wavesurfer.js"></script>
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<!-- spectrogram format renderer -->
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<script src="../../dist/plugin/wavesurfer.spectrogram.js"></script>
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<!-- App -->
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<script src="app.js"></script>
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<script src="../trivia.js"></script>
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<!-- highlight.js for syntax highlighting in this example -->
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<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/9.13.1/styles/default.min.css">
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<script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.13.1/highlight.min.js"></script>
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<script>hljs.initHighlightingOnLoad();</script>
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</head>
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<body itemscope itemtype="http://schema.org/WebApplication">
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<div class="container">
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<div class="header">
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<noindex>
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<ul class="nav nav-pills pull-right">
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<li><a href="?fill">Fill</a></li>
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<li><a href="?scroll">Scroll</a></li>
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</ul>
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</noindex>
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<h1 itemprop="name"><a href="http://wavesurfer-js.org">wavesurfer.js</a><noindex> + Spectrogram</noindex></h1>
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</div>
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<div id="demo">
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<div id="waveform">
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<div class="progress progress-striped active" id="progress-bar">
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<div class="progress-bar progress-bar-info"></div>
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</div>
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<!-- Here be waveform -->
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</div>
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<div id="wave-spectrogram"></div>
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<div class="controls">
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<button class="btn btn-primary" data-action="play">
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<i class="glyphicon glyphicon-play"></i>
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Play
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/
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<i class="glyphicon glyphicon-pause"></i>
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Pause
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</button>
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</div>
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</div>
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<div class="row marketing">
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<div class="col-lg-4">
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<h4>wavesurfer.js Spectrogram Plugin</h4>
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<p itemprop="about">Adds a simple spectrogram to your <strong>wavesurfer.js</strong> instances.</p>
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</div>
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<div class="col-lg-8">
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<h4>Quick Start</h4>
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<noindex><p>
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<pre><code>var wavesurfer = WaveSurfer.create({
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// your options here
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plugins: [
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WaveSurfer.spectrogram.create({
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wavesurfer: wavesurfer,
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container: "#wave-spectrogram",
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labels: true
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})
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]
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});
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wavesurfer.load('../media/demo.wav');</code></pre>
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</p></noindex>
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<br />
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<h4>Options</h4>
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<ul class="markdown-body">
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<li><code>wavesurfer</code> - <em>required</em> - a WaveSurfer instance.</li>
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<li><code>container</code> - <em>required</em> - the element in which to place the spectrogram, or a CSS selector to find it.</li>
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<li><code>fftSamples</code> - number of FFT samples (<code>512</code> by default). Number of spectral lines and height of the spectrogram will be a half of this parameter.</li>
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<li><code>frequenciesDataUrl</code> - URL to load spectral data from.</li>
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<li><code>labels</code> - Whether or not to display frequency labels.</li>
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<li><code>colorMap</code> - Specifies the colormap to be used when rendering the spectrogram.</li>
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</ul>
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<h4>Generating a colorMap</h4>
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The <a href="https://www.npmjs.com/package/colormap">colormap npm</a> can be used to generate a
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colormap. In this example, the colormap has been saved to a json file and is retrieved by the
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client before initializing the spectrogram.
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<noindex><p>
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<pre><code>const colormap = require('colormap');
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const colors = colormap({
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colormap: 'hot',
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nshades: 256,
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format: 'float'
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});
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const fs = require('fs');
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fs.writeFile('hot-colormap.json', JSON.stringify(colors));
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</code></pre>
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</p></noindex>
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</div>
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</div>
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<div class="footer row">
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<div class="col-sm-12">
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<a rel="license" href="https://opensource.org/licenses/BSD-3-Clause"><img alt="BSD-3-Clause License" style="border-width:0" src="https://img.shields.io/badge/License-BSD%203--Clause-blue.svg" /></a>
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</div>
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<div class="col-sm-12">
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<span xmlns:dct="http://purl.org/dc/terms/" href="http://purl.org/dc/dcmitype/Text" property="dct:title" rel="dct:type">wavesurfer.js</span> by <a href="https://github.com/katspaugh/wavesurfer.js">katspaugh</a> is licensed under a <a rel="license" href="https://opensource.org/licenses/BSD-3-Clause">BSD-3-Clause License</a>.
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</div>
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</div>
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</div>
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<div class="github-fork-ribbon-wrapper right">
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<div class="github-fork-ribbon">
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<a itemprop="isBasedOnUrl" href="https://github.com/katspaugh/wavesurfer.js">Fork me on GitHub</a>
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</div>
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</div>
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<script>
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(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
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(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
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m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
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})(window,document,'script','//www.google-analytics.com/analytics.js','ga');
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ga('create', 'UA-50026819-1', 'wavesurfer.fm');
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ga('send', 'pageview');
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</script>
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</body>
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</html>
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