Derek is correct. If You have a realtek card (I don’t know about support from other manufacturers) You set it to stereo mix, and set the stereo mix to default microphone. You can then create a source node linked with your mic using navigator.getUserMedia.. Google and You Will find it. I just made a fiddle … Read more
Edit (November 2015): iOS 9 no longer allows audio to start in a touchstart event, which breaks the solution below. However it works in a touchend event. The original answer for iOS 6 is left intact below, but for iOS 9 support make sure you use touchend. Well, sorry to answer my own bounty question, … Read more
You can use the Web Audio API in most browsers now (excepting IE and Opera Mini). Try out this code: // one context per document var context = new (window.AudioContext || window.webkitAudioContext)(); var osc = context.createOscillator(); // instantiate an oscillator osc.type=”sine”; // this is the default – also square, sawtooth, triangle osc.frequency.value = 440; // … Read more
There is a really amazing ‘offline’ mode of the Web Audio API that allows you to pre-process an entire file through an audio context and then do something with the result: var context = new webkitOfflineAudioContext(); var source = context.createBufferSource(); source.buffer = buffer; source.connect(context.destination); source.noteOn(0); context.oncomplete = function(e) { var audioBuffer = e.renderedBuffer; }; context.startRendering(); … Read more
This is because this recording icon is the one of getUserMedia streaming, not the one of MediaRecorder. When you stop the MediaRecorder, the stream is still active. To stop this gUM stream (or any other MediaStream), you’d call MediaStreamTrack.stop(). stream.getTracks() // get all tracks from the MediaStream .forEach( track => track.stop() ); // stop each … Read more
This answer is quoted almost exactly from my answer to a related question: Firefox 25 and AudioContext createJavaScriptNote not a function Firefox does support MediaElementSource if the media adheres to the Same-Origin Policy, however there is no error produced by Firefox when attempting to use media from a remote origin. The specification is not really … Read more
I had the same problem and I found this very simple solution. audio_file.onchange = function(){ var files = this.files; var file = URL.createObjectURL(files[0]); audio_player.src = file; audio_player.play(); }; <input id=”audio_file” type=”file” accept=”audio/*” /> <audio id=”audio_player” /> You can test here: http://jsfiddle.net/Tv8Cm/
Here we capture microphone audio as a Web Audio API event loop buffer using getUserMedia() … time domain and frequency domain snippets of each audio event loop buffer are printed (viewable in browser console just hit key F12 or ctrl+shift+i ) <html><head><meta http-equiv=”Content-Type” content=”text/html; charset=ISO-8859-1″> <title>capture microphone audio into buffer</title> <script type=”text/javascript”> var webaudio_tooling_obj = … Read more