title: Speech to text conversion in Linux
body: <p>I am planning to start an application which converts the speech to text in Linux.
  Are there any existing interfaces so that I can extend them?
  or Is there any such existing application in Linux?
  Any inputs on this?</p>
  
  <p>EDIT: The application that I am planning to write should be able convert every word that we speak to text, not just the Yes/No.</p>