在Cordova / Phonegap / Ionic中是否有任何用于向左或向右平移音频的库?理想情况下,我希望有一个声音文件,可以从左侧或右侧耳机通道播放,但不能同时播放它们。
我查看过cordova-media-plugin,cordova-native-audio,cordovoa-audioToggle和soundJS / createJS。其中,只有soundJS& createJS似乎能够控制耳机输出和平移,但它似乎不适用于Cordova。此外,没有angular / cordova的例子。
答案 0 :(得分:0)
在Android 6.0上,以下脚本有效。它使用了Web Audio API。我还没有在iOS上测试它,但我觉得它会在那里工作(如果没有,请发表评论)。
你需要一个" omg.mp3"在根目录中的文件以进行测试。您还应该使用Cordova进行构建,而不必担心浏览器中可能出现的CORS或同域错误
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport" content="width=device-width">
<title>StereoPannerNode example</title>
<link rel="stylesheet" href="">
<!--[if lt IE 9]>
<script src="//html5shiv.googlecode.com/svn/trunk/html5.js"></script>
<![endif]-->
</head>
<body>
<h1>StereoPannerNode example</h1>
<audio controls>
<source src="omg.mp3" type="audio/mp3">
<p>Browser too old to support HTML5 audio? How depressing!</p>
</audio>
<h2>Set stereo panning</h2>
<input class="panning-control" type="range" min="-1" max="1" step="0.1" value="0">
<span class="panning-value">0</span>
</body>
<script>
var audioCtx = new (window.AudioContext || window.webkitAudioContext)();
var myAudio = document.querySelector('audio');
var panControl = document.querySelector('.panning-control');
var panValue = document.querySelector('.panning-value');
// Create a MediaElementAudioSourceNode
// Feed the HTMLMediaElement into it
var source = audioCtx.createMediaElementSource(myAudio);
// Create a stereo panner
var panNode = audioCtx.createStereoPanner();
// Event handler function to increase panning to the right and left
// when the slider is moved
panControl.oninput = function() {
panNode.pan.value = panControl.value;
panValue.innerHTML = panControl.value;
}
// connect the AudioBufferSourceNode to the gainNode
// and the gainNode to the destination, so we can play the
// music and adjust the panning using the controls
source.connect(panNode);
panNode.connect(audioCtx.destination);
</script>
</html>