Python SpeechRecognition模块报Internal Server Error问题求助

用户使用Python的speech_recognition模块进行语音转文本时，遇到HTTP Error 500: Internal Server Error，更新模块后问题仍存在，此前正常运行的代码也无法工作。

重现代码 #

import speech_recognition as s 
sr=s.Recognizer()
print("i am your script and listening you...........................")
with s.Microphone() as m:
 audio=sr.listen(m)
 query=sr.recognize_google(audio,language='eng-in')
 print(query)

错误日志 #

i am your script and listening you...........................
Traceback (most recent call last):
File "C:\Users\Believe Itsreal\AppData\Local\Programs\Python\Python310\lib\site-packages\speech_recognition\__init__.py", line 894, in recognize_google
response = urlopen(request, timeout=self.operation_timeout)
File "C:\Users\Believe Itsreal\AppData\Local\Programs\Python\Python310\lib\urllib\request.py", line 216, in urlopen
return opener.open(url, data, timeout)
File "C:\Users\Believe Itsreal\AppData\Local\Programs\Python\Python310\lib\urllib\request.py", line 525, in open
response = meth(req, response)
File "C:\Users\Believe Itsreal\AppData\Local\Programs\Python\Python310\lib\urllib\request.py", line 634, in http_response
response = self.parent.error(
File "C:\Users\Believe Itsreal\AppData\Local\Programs\Python\Python310\lib\urllib\request.py", line 563, in error
return self._call_chain(*args)
File "C:\Users\Believe Itsreal\AppData\Local\Programs\Python\Python310\lib\urllib\request.py", line 496, in _call_chain
result = func(*args)
File "C:\Users\Believe Itsreal\AppData\Local\Programs\Python\Python310\lib\urllib\request.py", line 643, in http_error_default
raise HTTPError(req.full_url, code, msg, hdrs, fp)
urllib.error.HTTPError: HTTP Error 500: Internal Server Error

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "d:\coding\python_in_hole\python code\api.py", line 6, in 
query=sr.recognize_google(audio,language='eng-in')
File "C:\Users\Believe Itsreal\AppData\Local\Programs\Python\Python310\lib\site-packages\speech_recognition\__init__.py", line 896, in recognize_google
raise RequestError("recognition request failed: {}".format(e.reason))
speech_recognition.RequestError: recognition request failed: Internal Server Error

解决方法 #

• 排查网络连接：确认当前网络可正常访问Google服务，尝试切换网络环境（如手机热点）后重试。
• 使用认证API密钥：未授权的请求容易触发限制或服务器错误，申请Google Cloud Speech-to-Text API密钥后传入调用：

  query = sr.recognize_google(audio, language='eng-in', key='你的API密钥')
  

  注：需在Google Cloud控制台启用对应服务并配置计费（提供免费额度）。
• 优化音频输入：添加降噪处理并设置合理的输入时长，避免无效音频导致服务器处理失败：

  with s.Microphone() as m:
      sr.adjust_for_ambient_noise(m)
      print("请说话...")
      audio = sr.listen(m, timeout=5, phrase_time_limit=10)
      query = sr.recognize_google(audio, language='eng-in')
      print(query)
  

• 切换离线识别引擎：若Google服务持续异常，改用CMU Sphinx离线识别：

  # 先安装依赖：pip install pocketsphinx
  query = sr.recognize_sphinx(audio, language='en-in')
  

• 等待服务器恢复：部分500错误为Google服务器临时故障，间隔一段时间后重新运行代码。

内容的提问来源于stack exchange，提问作者believe itsreal