172 lines
6.9 KiB
HTML
172 lines
6.9 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 | Panner Example</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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<link rel="screenshot" itemprop="screenshot" href="https://katspaugh.github.io/wavesurfer.js/example/screenshot.png" />
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<!-- wavesurfer.js -->
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<script src="../../dist/wavesurfer.js"></script>
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<!-- Demo -->
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<script src="main.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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<ul class="nav nav-pills pull-right">
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<li><a href="/"><i class="glyphicon glyphicon-home"></i></a></li>
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</ul>
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<h1 itemprop="name">Panner Filter Example</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 the waveform -->
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</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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<hr />
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<div class="row">
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<div class="col-sm-4">
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← left
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</div>
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<div class="col-sm-4">
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<!-- Panner -->
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<input data-action="pan" type="range" min="-45" max="45" value="0" style="width: 100%" />
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</div>
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<div class="col-sm-4">
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right →
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</div>
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</div>
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</div>
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</div>
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<div class="row marketing">
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<h3>How to Create a Panner Interface</h3>
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<p>
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This is an example of how to add an arbitrary Web
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Audio node into a wavesurfer.js graph. Panner node
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is one such node.
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</p>
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<hr />
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<div class="col-lg-6">
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<h4>1. Initialize wavesurfer.js</h4>
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<p>Create a <code>WaveSurfer</code> instance and load an audio clip.</p>
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<noindex><p>
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<pre><code>var wavesurfer = WaveSurfer.create({
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container: '#demo' // this is the only required param
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});
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wavesurfer.load('media.wav');</code></pre>
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</p></noindex>
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<h4>2. Create a Panner Node</h4>
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<p>
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Create a panner node and add it to the Web
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Audio graph using the <code>setFilter</code> method.
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</p>
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<noindex><p>
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<pre><code>var panner = wavesurfer.backend.ac.createPanner();
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wavesurfer.backend.setFilter(panner);</code></pre>
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</p></noindex>
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</div>
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<div class="col-lg-6">
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<h4>3. Create a Range Slider</h4>
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<p>
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In your HTML, add a range input.
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</p>
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<noindex><p>
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<pre><code><input id="panner-input" type="range" min="-45" max="45" value="0" /></code></pre>
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</p></noindex>
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<h4>4. Bind the Range Slider</h4>
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<p>
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Listen to the range input's <code>input</code> event and set the panner's position
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according to the input's value.
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<small>Adapted from <a href="http://stackoverflow.com/a/14412601/352796">this SO answer</a>.</small>
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</p>
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<noindex><p>
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<pre><code>var slider = document.querySelector('#panner-input');
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slider.addEventListener('input', function (e) {
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var xDeg = parseInt(e.target.value);
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var x = Math.sin(xDeg * (Math.PI / 180));
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wavesurfer.panner.setPosition(x, 0, 0);
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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-7">
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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 style="white-space: nowrap" 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 class="col-sm-5">
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<div class="pull-right">
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<noindex>
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The audio file is from <a rel="nofollow" href="http://spokencorpora.ru/">spokencorpora.ru</a>, used with permission.
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</noindex>
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</div>
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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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