如何修复 sounddevice.PortaudioError。打开 RawStream 时出错：采样率无效 [PaErrorCode -9997]

Question

我正在尝试在我的 Pi 3b+ 上安装 google 助手，一切顺利，没有错误，我的麦克风和扬声器工作正常，我的 .asoundrc 是正确的

pcm.!default {
  type asym
  capture.pcm "mic"
  playback.pcm "speaker"
}
pcm.mic {
  type plug
  slave {
    pcm "hw:1,0"
  }
}
pcm.speaker {
  type plug
  slave {
    pcm "hw:0,0"
  }
}

并且我遵循了很多教程并且完全按照他们的方式做了，也尝试了一些其他的在线修复，但是 none 解决了这个问题。

这是完整的消息

INFO:root:Connecting to embeddedassistant.googleapis.com
Traceback (most recent call last):
  File "/home/pi/env/bin/googlesamples-assistant-pushtotalk", line 10, in <module>
    sys.exit(main())
  File "/home/pi/env/lib/python3.7/site-packages/click/core.py", line 722, in __call__
    return self.main(*args, **kwargs)
  File "/home/pi/env/lib/python3.7/site-packages/click/core.py", line 697, in main
    rv = self.invoke(ctx)
  File "/home/pi/env/lib/python3.7/site-packages/click/core.py", line 895, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/home/pi/env/lib/python3.7/site-packages/click/core.py", line 535, in invoke
    return callback(*args, **kwargs)
  File "/home/pi/env/lib/python3.7/site-packages/googlesamples/assistant/grpc/pushtotalk.py", line 351, in main
    flush_size=audio_flush_size
  File "/home/pi/env/lib/python3.7/site-packages/googlesamples/assistant/grpc/audio_helpers.py", line 190, in __init__
    blocksize=int(block_size/2),  # blocksize is in number of frames.
  File "/home/pi/env/lib/python3.7/site-packages/sounddevice.py", line 1264, in __init__
    **_remove_self(locals()))
  File "/home/pi/env/lib/python3.7/site-packages/sounddevice.py", line 780, in __init__
    'Error opening {0}'.format(self.__class__.__name__))
  File "/home/pi/env/lib/python3.7/site-packages/sounddevice.py", line 2572, in _check
    raise PortAudioError(errormsg, err)
sounddevice.PortAudioError: Error opening RawStream: Invalid sample rate [PaErrorCode -9997]

Answer 1

好吧，在测试了一些东西之后，我尝试将速率 16000 置于 pcm.speaker 下，现在可以使用了

pcm.!default {
  type asym
  capture.pcm "mic"
  playback.pcm "speaker"
}
pcm.mic {
  type plug
  slave {
    pcm "hw:1,0"
  }
}
pcm.speaker {
  type plug
  slave {
    pcm "hw:0,0"
    rate 16000
  }
}

Answer 2

对于仍然有此问题的人：

确保编辑 /etc/asound.conf 文件。我被卡住了，因为我编辑了 /home/pi/.asoundrc 文件。

如何修复 sounddevice.PortaudioError。打开 RawStream 时出错：采样率无效 [PaErrorCode -9997]

How to fix sounddevice.PortaudioError. Error opening RawStream: invalid sample rate [PaErrorCode -9997]

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