This program runs by applying threading. We use the microphone object to obtain speech input. We call wakeup() to activate the ReSpeaker board in order to listen to incoming speech:

    mic = Microphone(quit_event=quit_event) 
    while not quit_event.is_set(): 
        if mic.wakeup('respeaker'): 
            print('Wake up') 

After waking up ReSpeaker, we can listen to speech and perform recognition by calling the recognize() function:

data = mic.listen() 
text = mic.recognize(data)
if text:
   print('Recognized %s' % text)