在RPI 3上启动Google Assistant样本时，无效的采样率误差

Question

我试图按照针对此特定设备和软件的Google页面上的说明(https://developers.google.com上的Google页面上的说明，在我的RPI 3模型B上安装新的Google Assistant SDK/助手/SDK/概述(。我遵循指示，并成功地配置了我的麦克风(Kinobo USB MIC https://www.amazon.com/kinobo-microphone-desktop-recognition-software/dp/dp/b00ir8r7wq(工作。

但是，在运行启动命令时：

python -m googlesamples.assistant

我收到错误：trackback(最近的电话最后一次(：

File "/usr/lib/python3.4/runpy.py", line 170, in _run_module_as_main
    "__main__", mod_spec)
File "/usr/lib/python3.4/runpy.py", line 85, in _run_code
    exec(code, run_globals)
File "/home/pi/env/lib/python3.4/site-
    packages/googlesamples/assistant/audio_helpers/__main__.py", line 94, 
    in <module>
    main()
File "/home/pi/env/lib/python3.4/site-packages/click/core.py", line 
    722, in __call__
    return self.main(*args, **kwargs)
File "/home/pi/env/lib/python3.4/site-packages/click/core.py", line 
    697, in main
    rv = self.invoke(ctx)
File "/home/pi/env/lib/python3.4/site-packages/click/core.py", line 
    895, in invoke
    return ctx.invoke(self.callback, **ctx.params)
File "/home/pi/env/lib/python3.4/site-packages/click/core.py", line 
    535, in invoke
    return callback(*args, **kwargs)
File "/home/pi/env/lib/python3.4/site-
    packages/googlesamples/assistant/audio_helpers/__main__.py", line 
    67, in main
    flush_size=audio_flush_size)
File "/home/pi/env/lib/python3.4/site-
    packages/googlesamples/assistant/audio_helpers/__init__.py", line 
    140, in __init__
    blocksize=int(block_size/2),  # blocksize is in number of frames.
File "/home/pi/env/lib/python3.4/site-packages/sounddevice.py", line 
    1491, in __init__
    **_remove_self(locals()))
File "/home/pi/env/lib/python3.4/site-packages/sounddevice.py", line 
    1017, in __init__
    'Error opening {0}'.format(self.__class__.__name__))
File "/home/pi/env/lib/python3.4/site-packages/sounddevice.py", line 
    2671, in _check
    raise PortAudioError(msg)
    sounddevice.PortAudioError: Error opening RawStream: Invalid 
    sample rate

我不明白为什么它会抛出无效的采样率，并且在尝试浏览错误时，我没有遇到表示样本率的变量或魔术数字。关于我如何解决此错误的任何想法？

Answer 1

您是否尝试过"配置和测试音频"下的步骤2和3？我遇到了同样的问题，这为我清除了。现在效果很好。

"配置和测试音频"的链接是：

https://developers.google.com/assistant/sdk/prototype/getting-started-pi-python/configure-audio-audio