title: Can't access microphone while running Dialog demo in sphinx4 5prealpha
body: <p>I am trying to run the dialog demo of sphinx 4 pre aplha but it gives errors.</p>
  
  <p>I am creating a live speech application.</p>
  
  <p>I imported the project using maven and followed this guide on stack overflow: <a href="https://stackoverflow.com/a/25963020/2653162">https://stackoverflow.com/a/25963020/2653162</a></p>
  
  <p>The error says about issues regarding the 16 khz and channel being mono. So clearly its about the sampling stuff. And is also says about microphone.</p>
  
  <p>I looked on how change the microphone settings to 16 khz and 16 bit but there is no such option in windows 7</p>
  
  <p>:<img src="https://i.stack.imgur.com/Owyxs.png" alt=" Only Options available in win 7"></p>
  
  <p>The thing is that the HelloWorld and dialog demo worked fine in sphinx4 1.06 beta but after I tried the latest release it gives following  errors:</p>
  
  <pre><code>Exception in thread "main" java.lang.IllegalStateException: javax.sound.sampled.LineUnavailableException: line with format PCM_SIGNED 16000.0 Hz, 16 bit, mono, 2 bytes/frame, little-endian not supported.
      at edu.cmu.sphinx.api.Microphone.&lt;init&gt;(Microphone.java:38)
      at edu.cmu.sphinx.api.SpeechSourceProvider.getMicrophone(SpeechSourceProvider.java:18)
      at edu.cmu.sphinx.api.LiveSpeechRecognizer.&lt;init&gt;(LiveSpeechRecognizer.java:34)
      at edu.cmu.sphinx.demo.dialog.Dialog.main(Dialog.java:145)
  Caused by: javax.sound.sampled.LineUnavailableException: line with format PCM_SIGNED 16000.0 Hz, 16 bit, mono, 2 bytes/frame, little-endian not supported.
      at com.sun.media.sound.DirectAudioDevice$DirectDL.implOpen(DirectAudioDevice.java:513)
      at com.sun.media.sound.AbstractDataLine.open(AbstractDataLine.java:121)
      at com.sun.media.sound.AbstractDataLine.open(AbstractDataLine.java:413)
      at edu.cmu.sphinx.api.Microphone.&lt;init&gt;(Microphone.java:36)
      ... 3 more
  </code></pre>
  
  <p>Cant figure out what to do to resolve the issue. </p>