To run this:

• pip3 install -r requirements.txt
• To recognize the text of an audio file named 16-122828-0002.wav:

  python recognizer.py 16-122828-0002.wav
  

  Output:

  I believe you're just talking nonsense
  

• To recognize the text from your microphone after talking 5 seconds:

  python live_recognizer.py 5
  

  This will record your talking in 5 seconds and then uploads the audio data to Google to get the desired output.