title: android: Detect sound level
body: <p>Using <code>MediaRecorder</code> I capture sound from device's microphone. From the sound I get I need only to analyze the sound volume (sound loudness), without saving the sound to a file. </p>
  
  <p>Two questions:</p>
  
  <ol>
  <li>How do I get the loudness for the sound at a given moment in time?</li>
  <li>How do I do the analyze without saving the sound to a file?</li>
  </ol>
  
  <p>Thank you.                                </p>