def listen(rec, mic):
  with mic as source:
    print('adjusting mic for ambient noise..')
    rec.adjust_for_ambient_noise(source)
    print('listening..')
    # timeout is not max record time but max time it will wait for audio to start
    audio = rec.listen(source, timeout=5)

rec = sr.Recognizer()
mic = sr.Microphone()
outputString = listen(rec, mic)