集成Rev时如何调试和解决ValueError。ai API进入Python语音识别库?

我正试图增加对 Rev.ai service 进入 Python SpeechRecognition library 使用 Rev.ai Python SDK .我已经编写了一个集成函数,但当我试图在一个简单的应用程序中使用它时,我收到了一个ValueError。我怀疑这可能是由于输入音频配置中的错误,希望能帮助理解和解决它。

我的语音识别功能如下:

    def recognize_rev_ai(self, audio_data, key=None, language="en"):
        """
        This function requires a Rev.ai account.
        """
        assert isinstance(audio_data, AudioData), "``audio_data`` must be audio data"
        assert key is None or isinstance(key, str), "``key`` must be ``None`` or a string"
        assert isinstance(language, str), "``language`` must be a string"

        try:
            from rev_ai.models import MediaConfig
            from rev_ai.streamingclient import RevAiStreamingClient
        except ImportError:
            raise RequestError('missing rev_ai module')

        config = MediaConfig('audio/x-raw', 'interleaved', 16000, 'S16LE', 1)

        raw_data = audio_data.get_raw_data(
            convert_rate=16000
        )

        if key is not None:
            streamclient = RevAiStreamingClient(key, config)
        try:
            with io.open(raw_data, 'rb') as stream:
                media_generator = [stream.read()]
            response_generator = streamclient.start(media_generator)
            for response in response_generator:
                print(response)

        except URLError as e:
            raise RequestError("recognition connection failed: {0}".format(e.reason))

下面是一个示例脚本,演示如何使用。我根据SpeechRecognition代码样本中的一个示例对其进行了建模。这个脚本失败了 ValueError: embedded null byte .最后包含完整的错误回溯。

import speech_recognition as sr

# obtain audio from the microphone
r = sr.Recognizer()
with sr.Microphone(sample_rate = 16000) as source:
    print("Say something!")
    audio = r.listen(source)

try:
  print ('Rev thinks you said: ' + r.recognize_rev_ai(audio, 'KEY'))
except sr.UnknownValueError:
    print("Rev could not understand audio")
except sr.RequestError as e:
    print("Rev error; {0}".format(e))

完整错误回溯:

Say something!
Traceback (most recent call last):
  File "b.py", line 10, in <module>
    print ('Rev thinks you said: ' + r.recognize_rev_ai(audio, 'KEY'))
  File "/home/vikram/.local/lib/python3.8/site-packages/speech_recognition/__init__.py", line 1431, in recognize_rev_ai
    with io.open(raw_data, 'rb') as stream:
ValueError: embedded null byte

如果您能帮我调试以上内容,我将不胜感激。