code: def audiorate(filename):
      
      if '.wav' in filename.lower():
          wf = wave.open(filename)
          fs = wf.getframerate()
          wf.close()
      elif '.call' in filename.lower():
          fs = 333333
      else:
          raise IOError("Unsupported audio format for file: {}".format(filename))
  
      return fs
docs: Determines the samplerate of the given audio recording file
  
      :param filename: filename of the audiofile
      :type filename: str
      :returns: int -- samplerate of the recording