Real-time speech recognition using Pocket Sphinx, GStreamer, and Python in Ubuntu 14.04.2

The following is the code for real-time speech recognition using GStreamer:

#!/usr/bin/env python

#The following modules need to import before handling gstreamer API's

import gobject
import sys
import pygst
pygst.require('0.10')
gobject.threads_init()
import gst

#Module to handle keyboard interrupt signal
import signal

#Keyboard signal handling routine
def signal_handle(signal, frame):
  print "You pressed Ctrl+C"
  sys.exit(0)


#Implementation of Speech recognition class
class Speech_Recog(object):

  #Initializing gstreamer pipeline and pocket sphinx element
  def __init__(self):
    self.init_gst()

  #This function will initialize gstreamer pipeline
  def init_gst(self):
    #The following code create a gstreamer pipeline with pipeline description. The required descriptors needed for the code is given as parameters.
          self.pipeline = gst.parse_launch('gconfaudiosrc !audioconvert ! audioresample...