AudioContext AudioContext是所有音频操作的前提,一个类似Canvas的ctx的上下文对象 var ac = new (window.AudioContext || window.webkitAudioContext 需要在创建时加上后缀 AudioBufferSourceNode 创建音频源 方法(1) 这种方式是通过请求方式播放音乐 var ac = new (window.AudioContext || window.webkitAudioContext onclick="music.pause()"> //点击停止音乐 <script> var ac = new (window.AudioContext || window.webkitAudioContext oninput="setGain(this)"> //控制音乐播放声音 <script> var ac = new (window.AudioContext || window.webkitAudioContext Data[i] ); } } var ac = new (window.AudioContext || window.webkitAudioContext
目前Chrome和Firefox对其提供了支持,但需要相应前缀,Chrome中为window.webkitAudioContext,Firefox中为mozAudioContext。 window.AudioContext = window.AudioContext || window.webkitAudioContext || window.mozAudioContext || window.msAudioContext
var AudioContext = AudioContext || webkitAudioContext, context = new AudioContext, canClick
noteOn代替start方法(新的API采用start方法,老版本createGain方法也是不支持的),另外一种方法是引入一个补丁js文件来解决 https://github.com/cwilso/webkitAudioContext-MonkeyPatch
如果你还考虑兼容性的话,可以加上 webkitAudioContext。 let AudioContext = window.AudioContext || window.webkitAudioContext; 它实际上和 MediaSource Extension 一样,是将输入数据直接和播放设备连接在一起
//1:音频上下文 window.AudioContext = window.AudioContext || window.webkitAudioContext || window.mozAudioContext
document.getElementById("music"); //1:音频上下文 window.AudioContext = window.AudioContext || window.webkitAudioContext
//浏览器适用 contextClass = window.AudioContext = window.AudioContext || window.webkitAudioContext
如果音频是关闭状态,则重新新建一个全局音频上下文 if (ac.state === 'closed') { ac = new (window.AudioContext || window.webkitAudioContext 兼容写法为:webkitAudioContext。
type="text/javascript"> // define variables var audioCtx = new (window.AudioContext || window.webkitAudioContext
var audio = document.getElementById("myAudio"); var context = new (window.AudioContext || window.webkitAudioContext
; mad_frame_finish(&frame); 播放 创建AudioContext对象 window.AudioContext = window.AudioContext || window.webkitAudioContext
window.innerWidth; canvas.height = window.innerHeight; const audioCtx = new (window.AudioContext || window.webkitAudioContext
交互增加声音 <button id="button">经过我</button> <script> window.AudioContext = window.AudioContext || window.webkitAudioContext
static createRecorder(callback,config){ window.AudioContext = window.AudioContext || window.webkitAudioContext
navigator、location、String、Date、Object、screen、document、 还有追加的 openDatabase、devicePixelRatio、AudioContext、webkitAudioContext
document.getElementById("meter").getContext("2d"); window.AudioContext = window.AudioContext || window.webkitAudioContext
window.AudioContext = window.AudioContext || window.webkitAudioContext || window.mozAudioContext
xhr.send(); }); } 实例化AudioContext// Safari是使用webkit前缀 let context = new (window.AudioContext || window.webkitAudioContext
static mediaRecorder = null // 媒体记录对象 static audioCtx = new (window.AudioContext || window.webkitAudioContext