title: HTML5 audio how to prevent browser microphones pick up all sounds
body: <p>In my sample asp.net/vb.net project for HTML5 audio, using Matt Diamond's recorder.js, when I grant any browser access to my microphone, I can hear every noise around me in the headset speakers (e.g., someone typing next to me, people speaking, etc).  I'm using a Logitech USB headset, but am not sure the specific model as they're provided through work.</p>
  
  <p>Does anyone know if this is a browser-related issue with the microphone (or possibly resulting from the headset I'm using)?  I'm trying to find a different headset to test with, but work typically buys the same model for everyone.</p>
  
  <p>I've tried a few other sites that have demos for recording and play back, and can still hear everything around me once I grant the microphone access (although some demos seem do better at not picking up the background noises).  </p>
  
  <p>My knowledge of audio is very limited as I've never worked with audio at the level of normalizing, setting gain, etc.  Any resources or suggestions would be greatly appreciated!</p>
  
  <p>I can include a copy of the aspx and vb.net pages from my sample project if that would be helpful.  Thanks!</p>