recognizing_state.py 文件源码

def on_enter(self, payload=None):
        """ Executed on the entry to the Recognizing State. Upon entry, audio is captured from the Microphone and
        recognition with preferred speech recognition engine is done. If successful, the machine transitions to Busy
        State. On failure, it transitions to Error state.
        :param payload: No payload is expected by this state
        :return: None
        """

        self.notify_renderer('listening')
        recognizer = self.components.recognizer
        try:
            print("Say something!")
            with self.components.microphone as source:
                audio = recognizer.listen(source, phrase_time_limit=5)
            self.notify_renderer('recognizing')
            print("Got it! Now to recognize it...")
            try:
                value = self.__recognize_audio(
                    audio=audio, recognizer=recognizer)
                print(value)
                self.notify_renderer('recognized', value)
                self.transition(self.allowedStateTransitions.get(
                    'busy'), payload=value)
            except sr.UnknownValueError:
                print("Oops! Didn't catch that")
                self.transition(self.allowedStateTransitions.get(
                    'error'), payload='RecognitionError')

            except sr.RequestError as e:
                print(
                    "Uh oh! Couldn't request results from Speech Recognition service; {0}".format(e))
                self.transition(self.allowedStateTransitions.get(
                    'error'), payload='ConnectionError')

        except KeyboardInterrupt:
            pass