Question

我正在使用getUserMedia（）函数从麦克风捕获音频输入，在chrome中运行良好，但在5秒后firefox声音消失。如果我再次发送麦克风请求（没有重新加载页面）同样的事情发生。以下是代码（我使用http://updates.html5rocks.com/2012/09/Live-Web-Audio-Input-Enabled作为指导）：

//getting the function depending on browser

navigator.getMedia = ( navigator.getUserMedia ||
                       navigator.webkitGetUserMedia ||
                       navigator.mozGetUserMedia ||
                       navigator.msGetUserMedia);

// success callback when requesting audio input stream
function gotAudioStream(stream) {
    window.AudioContext = window.AudioContext || window.webkitAudioContext;
    var audioContext = new AudioContext();

    // Create an AudioNode from the stream.
    var mediaStreamSource = audioContext.createMediaStreamSource( stream );

    // Connect it to the destination to hear yourself (or any other node for processing!)
    mediaStreamSource.connect( audioContext.destination );
}


function gotError(err) {
      alert("An error occured! " + err);
}


//when button clicked, browser asks a permission to access microphone

jQuery("#sound_on").click(function()
{
    navigator.getMedia({audio: true},gotAudioStream,gotError);
});

有什么想法吗？

EDIT / UPDATE

谢谢你，csch，供参考。 Karoun Kasraie的解决方法有效！

context = new AudioContext();

navigator.getUserMedia({ audio: true }, function(stream) {
  // the important thing is to save a reference to the MediaStreamAudioSourceNode
  // thus, *window*.source or any other object reference will do
  window.source = context.createMediaStreamSource(stream);
  source.connect(context.destination);
}, alert);

Answer 1

这是Firefox中的一个错误，可以在这里找到：

https://bugzilla.mozilla.org/show_bug.cgi?id=934512

还有一种解决方法：

context = new AudioContext();

navigator.getUserMedia({ audio: true }, function(stream) {
  // the important thing is to save a reference to the MediaStreamAudioSourceNode
  // thus, *window*.source or any other object reference will do
  window.source = context.createMediaStreamSource(stream);
  source.connect(context.destination);
}, alert);

source

HTML5麦克风捕获在Firefox中停止5秒后停止

EDIT / UPDATE

1 个答案: