title: Sound activity level from the microphone with only javascript
body: <p>Actually I'm trying to create a sound activity level from the mic. No record just a live level. I found many topics but nothing using only javascript. I found many useful links but I have no idea how to create what I want with just only javascript. The application need to work on several mobile platforms. (WebOS, Androïd, IOS...) and eventually on computers.</p>
  
  <p>here are the links :  </p>
  
  <p><a href="http://jsfiddle.net/7D3YS/" rel="nofollow">http://jsfiddle.net/7D3YS/</a></p>
  
  <p>This link is a simple random leveler. It's look like what I want. But there is no control on the level.</p>
  
  <p><a href="http://docs.phonegap.com/en/1.1.0/phonegap_media_capture_capture.md.html#capture.captureAudio" rel="nofollow">http://docs.phonegap.com/en/1.1.0/phonegap_media_capture_capture.md.html#capture.captureAudio</a></p>
  
  <p>It's using an audio capture, I think it's the best way but I have no idea how to listen and create a graphical render.</p>
  
  <p>www.sajithmr.me/jrecorder/example1.html</p>
  
  <p>This example is exactly what I want but it's using a swf file. And it doesn't work on iPhone.</p>
  
  <p>www.filosophy.org/2011/03/talking-to-the-web-the-basics-of-html5-speech-input/</p>
  
  <p>Google has created a webkit but I don't know how I can use it in my work. </p>
  
  <p>I thank to record an audio file and listen this file at the same time but I'm not sure of the efficiency.</p>
  
  <p>That's all what I found.
  Thanks for your help!</p>
  
  <p>Bastien</p>