Permalink
301f889 Dec 5, 2017
41 lines (29 sloc) 1.7 KB
#!/usr/bin/env python3
# NOTE: this example requires PyAudio because it uses the Microphone class
import time
import speech_recognition as sr
# this is called from the background thread
def callback(recognizer, audio):
# received audio data, now we'll recognize it using Google Speech Recognition
try:
# for testing purposes, we're just using the default API key
# to use another API key, use `r.recognize_google(audio, key="GOOGLE_SPEECH_RECOGNITION_API_KEY")`
# instead of `r.recognize_google(audio)`
print("Google Speech Recognition thinks you said " + recognizer.recognize_google(audio))
except sr.UnknownValueError:
print("Google Speech Recognition could not understand audio")
except sr.RequestError as e:
print("Could not request results from Google Speech Recognition service; {0}".format(e))
r = sr.Recognizer()
m = sr.Microphone()
with m as source:
r.adjust_for_ambient_noise(source) # we only need to calibrate once, before we start listening
# start listening in the background (note that we don't have to do this inside a `with` statement)
stop_listening = r.listen_in_background(m, callback)
# `stop_listening` is now a function that, when called, stops background listening
# do some unrelated computations for 5 seconds
for _ in range(50): time.sleep(0.1) # we're still listening even though the main thread is doing other things
# calling this function requests that the background listener stop listening
stop_listening(wait_for_stop=False)
# do some more unrelated things
while True: time.sleep(0.1) # we're not listening anymore, even though the background thread might still be running for a second or two while cleaning up and stopping