python谷歌语音识别模块过一会不起作用

Question

我正在尝试使用Python为名为“ Emma”的计算机创建一个类似Alexa的应用程序。通过使用Speech Recognition模块，它将使用麦克风作为收听用户的信号源。它可以正常工作，但是在回答或进行诸如搜索之类的操作后，它将冻结并且不再起作用。

我以为，语音识别的使用时间可能有限，但是在搜索后我什么都没找到。现在，我只是不知道是因为语音识别或其他一些模块，例如GTTS（Google文本到语音）。

如果您需要查看完整的代码，这是指向我的存储库的链接：https://github.com/ebraz/emma-virtual-assistant

请让我知道您解决问题的方法。

这里是语音识别代码的一部分：

def record_audio(ask=False, lang="en-US"):
    with sr.Microphone() as source:  # microphone as source
        print("Emma: I'm listening")
        if ask:
            speak(ask)
        time.sleep(1)
        audio = r.listen(source)  # listen for the audio via source
        voice_data = ''
        try:
            voice_data = r.recognize_google(
                audio, language=lang)  # convert audio to text
        except sr.UnknownValueError:  # error: recognizer does not understand
            speak("I did'nt get that")
            exit()
        except sr.RequestError:
            # error: recognizer is not connected
            speak('Sorry, the service is down')
            exit()
        print(f">> {voice_data.lower()}")  # print what user said
        return voice_data.lower()

Answer 1

阅读Speech Recognition Library Reference之后，我发现与其使用识别器的listen方法，还应该使用record method并设置duration参数。

---

这是代码：

def record_audio(ask=False, lang="en-US"):
    # Change the sample_rate to 16000 good quality and better recognition
    # higher sample rate means slower app.
    with sr.Microphone(sample_rate=12000) as source:  # microphone as source
        print("Emma: I'm listening")
        audio = r.record(source, duration=5)  # listen for the audio via source
        print("Emma: Microphone turned off, processing...")
        voice_data = ''
        try:
            voice_data = r.recognize_google(
                audio, language=lang)  # convert audio to text
        except sr.UnknownValueError:  # error: recognizer does not understand
            speak("I did'nt get that")
            exit()
        except sr.RequestError:
            # error: recognizer is not connected
            speak('Sorry, the service is down')
            exit()
        print(f">> {voice_data.lower()}")  # print what user said
        return voice_data.lower()