title: pocketsphinx how to determine out of grammar words
body: <p>I am currently using pocketsphix demo (android and visual studio 2010) and I have configured a jsgf grammer
  like this </p>
  
  <pre><code> #JSGF V1.0;
   grammar Names;
   public &lt;popular&gt; = muhammad | ahmed | maria | john | kelley | peter | jacob | jason; 
  </code></pre>
  
  <p>Whenever I say correct name, it detects it right in most cases but when I say a name not in the list, it still matches something and I do not want that or atleast be able to detect if something was said that was not in Grammar (may be through some score or api of pocketsphinx)</p>
  
  <p>I am sure pocketsphinx has it somewhere which I don't know. Please advise.</p>
  
  <p>Thanks, 
  Ahmed</p>