StackOverflow2013

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PO
primarykey
Id
20703515
data
AcceptedAnswerId
0
AnswerCount
0
ClosedDate
CommentCount
0
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CreationDate
2013-12-20T12:20:00.303
FavoriteCount
0
LastActivityDate
2013-12-20T13:34:59.220
LastEditDate
2013-12-20T13:34:59.220
LastEditorUserId
3057934
OwnerUserId
3057934
ParentId
19715312
PostTypeId
2
Score
5
ViewCount
0
LastEditorDisplayName
text
Body
The returned error from the callback function is null because in the current <a href="http://w3.org/TR/webaudio/#AudioContext-section">webaudio api spec</a> that function does not return an object error <pre><code>callback DecodeSuccessCallback = void (AudioBuffer decodedData); callback DecodeErrorCallback = void (); void decodeAudioData(ArrayBuffer audioData, DecodeSuccessCallback successCallback, optional DecodeErrorCallback errorCallback); </code></pre> DecodeSuccessCallback is raised when the complete input ArrayBuffer is decoded and stored internally as an AudioBuffer but for some unknown reason decodeAudioData can not decode a live stream. You can try to play the captured buffer setting the output buffer data when processing audio <pre><code>function connectAudioInToSpeakers(){ //var context = new webkitAudioContext(); navigator.webkitGetUserMedia({audio: true}, function(stream) { var context = new webkitAudioContext(); liveSource = context.createMediaStreamSource(stream); // create a ScriptProcessorNode if(!context.createScriptProcessor){ node = context.createJavaScriptNode(2048, 1, 1); } else { node = context.createScriptProcessor(2048, 1, 1); } node.onaudioprocess = function(e){ try{ ctx.clearRect(0, 0, document.getElementById("myCanvas").width, document.getElementById("myCanvas").height); document.getElementById("myCanvas").width = document.getElementById("myCanvas").width; ctx.fillStyle="#FF0000"; var input = e.inputBuffer.getChannelData(0); var output = e.outputBuffer.getChannelData(0); for(var i in input) { output[i] = input[i]; ctx.fillRect(i/4,input[i]*500+200,1,1); } }catch (e){ console.log('node.onaudioprocess',e.message); } } // connect the ScriptProcessorNode with the input audio liveSource.connect(node); // if the ScriptProcessorNode is not connected to an output the "onaudioprocess" event is not triggered in chrome node.connect(context.destination); //Geb mic eingang auf boxen //liveSource.connect(context.destination); }); } </code></pre>
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1. POdecodeAudioData HTML5 Audio API
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1. PTAnswer
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1. USvzamanillo
UserOwnerUserId
1. USvzamanillo
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1. POdecodeAudioData HTML5 Audio API
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