智能硬件语音交互怎么创建

import speech_recognition as sr
from gtts import gTTS
import os

def listen():
    recognizer = sr.Recognizer()
    with sr.Microphone() as source:
        print("Listening...")
        audio = recognizer.listen(source)
        try:
            command = recognizer.recognize_google(audio)
            print(f"User said: {command}")
            return command
        except sr.UnknownValueError:
            print("Sorry, I did not understand that.")
        except sr.RequestError as e:
            print(f"Could not request results from Google Speech Recognition service; {e}")

def speak(text):
    tts = gTTS(text=text, lang='en')
    tts.save("response.mp3")
    os.system("mpg321 response.mp3")

if __name__ == "__main__":
    while True:
        command = listen()
        if command:
            if "hello" in command.lower():
                speak("Hello! How can I help you today?")
            elif "bye" in command.lower():
                speak("Goodbye! Have a great day!")
                break