Recording html5 audio

Question

Is it possible to record sound with html5 yet? I have downloaded the latest canary version of chrome and use the following code:

navigator.getUserMedia = navigator.w

Answer 1

Now it is possible to access the audio buffer using Audio context API and getChannelData().

Here's a project on gitHub that records audio directly in MP3 format and saves it on the webserver: https://github.com/nusofthq/Recordmp3js

In recorder.js you will see how the audio buffer is accessed individually by channels like so:

this.node.onaudioprocess = function(e){
      if (!recording) return;
      worker.postMessage({
        command: 'record',
        buffer: [
          e.inputBuffer.getChannelData(0),
          //e.inputBuffer.getChannelData(1)
        ]
      });
    }

For a more detailed explanation of the implementation you can read the following blogpost: http://nusofthq.com/blog/recording-mp3-using-only-html5-and-javascript-recordmp3-js/