Python语音识别错误-无效的频道数

尝试这种方式：

r = sr.Recognizer()m = sr.Microphone(device_index=2)def loop():    with m as source:        print("say something")        audio = r.listen(source)        try: print("you said "+r.recognize_google(audio))        except sr.UnknownValueError: print("Could not understand")        except sr.RequestError as e: print("errpr: {0}".format(e))loop()

不要创建多个

Microphone()