title: Pocketsphinx decoder initialization returns -1
body: <p>I use the raspberry pi with pocketsphinx python and I found an example <a href="https://pypi.python.org/pypi/pocketsphinx#basic-usage" rel="nofollow">here</a>. From that script I use the same path as described in the script. When I try to run this script it give me an error:</p>
  
  <pre><code>ERROR: "acmod.c", line 83: Folder 'deps/pocketsphinx/model/en-us/en-us' does not contain acoustic model definition 'mdef'
  Traceback (most recent call last):
    File "test.py", line 15, in &lt;module&gt;
      decoder = ps.Decoder(config)
    File "/usr/local/lib/python2.7/dist-packages/pocketsphinx/pocketsphinx.py", line 271, in __init__
      this = _pocketsphinx.new_Decoder(*args)
  RuntimeError: new_Decoder returned -1
  </code></pre>
  
  <p>Does anyone know what the problem is?</p>