语音识别中的alsa问题（Python 3）
problem with alsa in speech recognition(Python 3)
我的ubuntu20有声音，可以播放任何音频；但问题是当我使用语音识别时，alsa 无法正常工作。我在 windows 中使用了语音识别，这很痛苦，但它确实有效。我已经安装了 pyaudio，...所以是的，这不是库问题。
我完成了：
1.Reinstalling alsa and pulseAudio.
2.Checking which program is using sound card.
3.Trying to specific device to be used in Microphone().
当我使用：python -c "import pyaudio;audio=pyaudio.PyAudio();print([audio.get_device_info_by_index(i) for i in range(audio.get_device_count())])"
returns:
ALSA lib pcm_dsnoop.c:604:(snd_pcm_dsnoop_open) unable to create IPC semaphore
ALSA lib pcm.c:2642:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear
ALSA lib pcm.c:2642:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe
ALSA lib pcm.c:2642:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side
ALSA lib pcm_route.c:869:(find_matching_chmap) Found no matching channel map
ALSA lib pcm_route.c:869:(find_matching_chmap) Found no matching channel map
ALSA lib pcm_route.c:869:(find_matching_chmap) Found no matching channel map
ALSA lib pcm_route.c:869:(find_matching_chmap) Found no matching channel map
ALSA lib pcm_oss.c:377:(_snd_pcm_oss_open) Unknown field port
ALSA lib pcm_oss.c:377:(_snd_pcm_oss_open) Unknown field port
ALSA lib pulse.c:242:(pulse_connect) PulseAudio: Unable to connect: Connection refused
ALSA lib pulse.c:242:(pulse_connect) PulseAudio: Unable to connect: Connection refused
ALSA lib pcm_usb_stream.c:486:(_snd_pcm_usb_stream_open) Invalid type for card
ALSA lib pcm_usb_stream.c:486:(_snd_pcm_usb_stream_open) Invalid type for card
ALSA lib pcm_dsnoop.c:604:(snd_pcm_dsnoop_open) unable to create IPC semaphore
[{'defaultSampleRate': 44100.0, 'defaultLowOutputLatency': 0.005804988662131519,
'defaultLowInputLatency': 0.005804988662131519, 'maxInputChannels': 2L, 'structVersion': 2L,
'hostApi': 0L, 'index': 0, 'defaultHighOutputLatency': 0.034829931972789115,
'maxOutputChannels': 2L, 'name': u'HDA Intel PCH: ALC3246 Analog (hw:0,0)',
'defaultHighInputLatency': 0.034829931972789115}, {'defaultSampleRate': 44100.0,
'defaultLowOutputLatency': 0.005804988662131519, 'defaultLowInputLatency': -1.0,
'maxInputChannels': 0L, 'structVersion': 2L, 'hostApi': 0L, 'index': 1,
'defaultHighOutputLatency': 0.034829931972789115, 'maxOutputChannels': 8L, 'name': u'HDA Intel
PCH: HDMI 0 (hw:0,3)', 'defaultHighInputLatency': -1.0}, {'defaultSampleRate': 44100.0,
'defaultLowOutputLatency': 0.005804988662131519, 'defaultLowInputLatency': -1.0,
'maxInputChannels': 0L, 'structVersion': 2L, 'hostApi': 0L, 'index': 2,
'defaultHighOutputLatency': 0.034829931972789115, 'maxOutputChannels': 8L, 'name': u'HDA Intel
PCH: HDMI 1 (hw:0,7)', 'defaultHighInputLatency': -1.0}, {'defaultSampleRate': 44100.0,
'defaultLowOutputLatency': 0.005804988662131519, 'defaultLowInputLatency': -1.0,
'maxInputChannels': 0L, 'structVersion': 2L, 'hostApi': 0L, 'index': 3,
'defaultHighOutputLatency': 0.034829931972789115, 'maxOutputChannels': 8L, 'name': u'HDA Intel
PCH: HDMI 2 (hw:0,8)', 'defaultHighInputLatency': -1.0}, {'defaultSampleRate': 44100.0,
'defaultLowOutputLatency': 0.005804988662131519, 'defaultLowInputLatency': -1.0,
'maxInputChannels': 0L, 'structVersion': 2L, 'hostApi': 0L, 'index': 4,
'defaultHighOutputLatency': 0.034829931972789115, 'maxOutputChannels': 8L, 'name': u'HDA Intel
PCH: HDMI 3 (hw:0,9)', 'defaultHighInputLatency': -1.0}, {'defaultSampleRate': 44100.0,
'defaultLowOutputLatency': 0.005804988662131519, 'defaultLowInputLatency': -1.0,
'maxInputChannels': 0L, 'structVersion': 2L, 'hostApi': 0L, 'index': 5,
'defaultHighOutputLatency': 0.034829931972789115, 'maxOutputChannels': 8L, 'name': u'HDA Intel
PCH: HDMI 4 (hw:0,10)', 'defaultHighInputLatency': -1.0}, {'defaultSampleRate': 48000.0,
'defaultLowOutputLatency': 0.021333333333333333, 'defaultLowInputLatency': -1.0,
'maxInputChannels': 0L, 'structVersion': 2L, 'hostApi': 0L, 'index': 6,
'defaultHighOutputLatency': 0.021333333333333333, 'maxOutputChannels': 128L, 'name':
u'sysdefault', 'defaultHighInputLatency': -1.0}, {'defaultSampleRate': 44100.0,
'defaultLowOutputLatency': 0.005804988662131519, 'defaultLowInputLatency': -1.0,
'maxInputChannels': 0L, 'structVersion': 2L, 'hostApi': 0L, 'index': 7,
'defaultHighOutputLatency': 0.034829931972789115, 'maxOutputChannels': 2L, 'name':
u'front', 'defaultHighInputLatency': -1.0}, {'defaultSampleRate': 44100.0,
'defaultLowOutputLatency': 0.005804988662131519, 'defaultLowInputLatency': -1.0,
'maxInputChannels': 0L, 'structVersion': 2L, 'hostApi': 0L, 'index': 8,
'defaultHighOutputLatency': 0.034829931972789115, 'maxOutputChannels': 2L, 'name':
u'surround40', 'defaultHighInputLatency': -1.0}, {'defaultSampleRate': 44100.0,
'defaultLowOutputLatency': 0.005804988662131519, 'defaultLowInputLatency': -1.0,
'maxInputChannels': 0L, 'structVersion': 2L, 'hostApi': 0L, 'index': 9,
'defaultHighOutputLatency': 0.034829931972789115, 'maxOutputChannels': 2L, 'name':
u'surround51', 'defaultHighInputLatency': -1.0}, {'defaultSampleRate': 44100.0,
'defaultLowOutputLatency': 0.005804988662131519, 'defaultLowInputLatency': -1.0,
'maxInputChannels': 0L, 'structVersion': 2L, 'hostApi': 0L, 'index': 10,
'defaultHighOutputLatency': 0.034829931972789115, 'maxOutputChannels': 2L, 'name':
u'surround71', 'defaultHighInputLatency': -1.0}, {'defaultSampleRate': 44100.0,
'defaultLowOutputLatency': 0.005804988662131519, 'defaultLowInputLatency': -1.0,
'maxInputChannels': 0L, 'structVersion': 2L, 'hostApi': 0L, 'index': 11,
'defaultHighOutputLatency': 0.034829931972789115, 'maxOutputChannels': 8L, 'name':
u'hdmi', 'defaultHighInputLatency': -1.0}, {'defaultSampleRate': 44100.0,
'defaultLowOutputLatency': 0.007755102040816327, 'defaultLowInputLatency':
0.007755102040816327, 'maxInputChannels': 128L, 'structVersion': 2L, 'hostApi': 0L,
'index': 12, 'defaultHighOutputLatency': 0.023219954648526078, 'maxOutputChannels': 128L,
'name': u'samplerate', 'defaultHighInputLatency': 0.023219954648526078},
{'defaultSampleRate': 44100.0, 'defaultLowOutputLatency': 0.007755102040816327,
'defaultLowInputLatency': 0.007755102040816327, 'maxInputChannels': 128L, 'structVersion':
2L, 'hostApi': 0L, 'index': 13, 'defaultHighOutputLatency': 0.023219954648526078,
'maxOutputChannels': 128L, 'name': u'speexrate', 'defaultHighInputLatency':
0.023219954648526078}, {'defaultSampleRate': 44100.0, 'defaultLowOutputLatency':
0.005804988662131519, 'defaultLowInputLatency': 0.005804988662131519, 'maxInputChannels':
8L, 'structVersion': 2L, 'hostApi': 0L, 'index': 14, 'defaultHighOutputLatency':
0.034829931972789115, 'maxOutputChannels': 8L, 'name': u'upmix',
'defaultHighInputLatency': 0.034829931972789115}, {'defaultSampleRate': 44100.0,
'defaultLowOutputLatency': 0.005804988662131519, 'defaultLowInputLatency':
0.005804988662131519, 'maxInputChannels': 6L, 'structVersion': 2L, 'hostApi': 0L, 'index':
15, 'defaultHighOutputLatency': 0.034829931972789115, 'maxOutputChannels': 6L, 'name':
u'vdownmix', 'defaultHighInputLatency': 0.034829931972789115}, {'defaultSampleRate':
48000.0, 'defaultLowOutputLatency': 0.021333333333333333, 'defaultLowInputLatency': -1.0,
'maxInputChannels': 0L, 'structVersion': 2L, 'hostApi': 0L, 'index': 16,
'defaultHighOutputLatency': 0.021333333333333333, 'maxOutputChannels': 128L, 'name':
u'default', 'defaultHighInputLatency': -1.0}, {'defaultSampleRate': 48000.0,
'defaultLowOutputLatency': 0.021333333333333333, 'defaultLowInputLatency': -1.0,
'maxInputChannels': 0L, 'structVersion': 2L, 'hostApi': 0L, 'index': 17, '
defaultHighOutputLatency': 0.021333333333333333, 'maxOutputChannels': 2L, 'name': u'dmix',
'defaultHighInputLatency': -1.0}]
错误：
ALSA lib pcm_dsnoop.c:604:(snd_pcm_dsnoop_open) unable to create IPC semaphore
ALSA lib pcm.c:2642:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear
ALSA lib pcm.c:2642:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe
ALSA lib pcm.c:2642:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side
ALSA lib pcm_route.c:869:(find_matching_chmap) Found no matching channel map
ALSA lib pcm_route.c:869:(find_matching_chmap) Found no matching channel map
ALSA lib pcm_route.c:869:(find_matching_chmap) Found no matching channel map
ALSA lib pcm_route.c:869:(find_matching_chmap) Found no matching channel map
ALSA lib pcm_oss.c:377:(_snd_pcm_oss_open) Unknown field port
ALSA lib pcm_oss.c:377:(_snd_pcm_oss_open) Unknown field port
ALSA lib pulse.c:242:(pulse_connect) PulseAudio: Unable to connect: Connection refused
我正在使用 VS 代码，可能 bug.The 问题是我怎样才能摆脱它？
大家好，我通过使用 sudo apt-get install pavucontrol 安装 voice control 来解决这个问题。运行 通过在 therminal.In 语音控制中使用 pavucontrol 将录音设备设置为 0。我的笔记本电脑内置麦克风，alsa 知道找到它。
我的ubuntu20有声音，可以播放任何音频；但问题是当我使用语音识别时，alsa 无法正常工作。我在 windows 中使用了语音识别，这很痛苦，但它确实有效。我已经安装了 pyaudio，...所以是的，这不是库问题。
我完成了：
1.Reinstalling alsa and pulseAudio.
2.Checking which program is using sound card.
3.Trying to specific device to be used in Microphone().
当我使用：python -c "import pyaudio;audio=pyaudio.PyAudio();print([audio.get_device_info_by_index(i) for i in range(audio.get_device_count())])"
returns:
ALSA lib pcm_dsnoop.c:604:(snd_pcm_dsnoop_open) unable to create IPC semaphore
ALSA lib pcm.c:2642:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear
ALSA lib pcm.c:2642:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe
ALSA lib pcm.c:2642:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side
ALSA lib pcm_route.c:869:(find_matching_chmap) Found no matching channel map
ALSA lib pcm_route.c:869:(find_matching_chmap) Found no matching channel map
ALSA lib pcm_route.c:869:(find_matching_chmap) Found no matching channel map
ALSA lib pcm_route.c:869:(find_matching_chmap) Found no matching channel map
ALSA lib pcm_oss.c:377:(_snd_pcm_oss_open) Unknown field port
ALSA lib pcm_oss.c:377:(_snd_pcm_oss_open) Unknown field port
ALSA lib pulse.c:242:(pulse_connect) PulseAudio: Unable to connect: Connection refused
ALSA lib pulse.c:242:(pulse_connect) PulseAudio: Unable to connect: Connection refused
ALSA lib pcm_usb_stream.c:486:(_snd_pcm_usb_stream_open) Invalid type for card
ALSA lib pcm_usb_stream.c:486:(_snd_pcm_usb_stream_open) Invalid type for card
ALSA lib pcm_dsnoop.c:604:(snd_pcm_dsnoop_open) unable to create IPC semaphore
[{'defaultSampleRate': 44100.0, 'defaultLowOutputLatency': 0.005804988662131519,
'defaultLowInputLatency': 0.005804988662131519, 'maxInputChannels': 2L, 'structVersion': 2L,
'hostApi': 0L, 'index': 0, 'defaultHighOutputLatency': 0.034829931972789115,
'maxOutputChannels': 2L, 'name': u'HDA Intel PCH: ALC3246 Analog (hw:0,0)',
'defaultHighInputLatency': 0.034829931972789115}, {'defaultSampleRate': 44100.0,
'defaultLowOutputLatency': 0.005804988662131519, 'defaultLowInputLatency': -1.0,
'maxInputChannels': 0L, 'structVersion': 2L, 'hostApi': 0L, 'index': 1,
'defaultHighOutputLatency': 0.034829931972789115, 'maxOutputChannels': 8L, 'name': u'HDA Intel
PCH: HDMI 0 (hw:0,3)', 'defaultHighInputLatency': -1.0}, {'defaultSampleRate': 44100.0,
'defaultLowOutputLatency': 0.005804988662131519, 'defaultLowInputLatency': -1.0,
'maxInputChannels': 0L, 'structVersion': 2L, 'hostApi': 0L, 'index': 2,
'defaultHighOutputLatency': 0.034829931972789115, 'maxOutputChannels': 8L, 'name': u'HDA Intel
PCH: HDMI 1 (hw:0,7)', 'defaultHighInputLatency': -1.0}, {'defaultSampleRate': 44100.0,
'defaultLowOutputLatency': 0.005804988662131519, 'defaultLowInputLatency': -1.0,
'maxInputChannels': 0L, 'structVersion': 2L, 'hostApi': 0L, 'index': 3,
'defaultHighOutputLatency': 0.034829931972789115, 'maxOutputChannels': 8L, 'name': u'HDA Intel
PCH: HDMI 2 (hw:0,8)', 'defaultHighInputLatency': -1.0}, {'defaultSampleRate': 44100.0,
'defaultLowOutputLatency': 0.005804988662131519, 'defaultLowInputLatency': -1.0,
'maxInputChannels': 0L, 'structVersion': 2L, 'hostApi': 0L, 'index': 4,
'defaultHighOutputLatency': 0.034829931972789115, 'maxOutputChannels': 8L, 'name': u'HDA Intel
PCH: HDMI 3 (hw:0,9)', 'defaultHighInputLatency': -1.0}, {'defaultSampleRate': 44100.0,
'defaultLowOutputLatency': 0.005804988662131519, 'defaultLowInputLatency': -1.0,
'maxInputChannels': 0L, 'structVersion': 2L, 'hostApi': 0L, 'index': 5,
'defaultHighOutputLatency': 0.034829931972789115, 'maxOutputChannels': 8L, 'name': u'HDA Intel
PCH: HDMI 4 (hw:0,10)', 'defaultHighInputLatency': -1.0}, {'defaultSampleRate': 48000.0,
'defaultLowOutputLatency': 0.021333333333333333, 'defaultLowInputLatency': -1.0,
'maxInputChannels': 0L, 'structVersion': 2L, 'hostApi': 0L, 'index': 6,
'defaultHighOutputLatency': 0.021333333333333333, 'maxOutputChannels': 128L, 'name':
u'sysdefault', 'defaultHighInputLatency': -1.0}, {'defaultSampleRate': 44100.0,
'defaultLowOutputLatency': 0.005804988662131519, 'defaultLowInputLatency': -1.0,
'maxInputChannels': 0L, 'structVersion': 2L, 'hostApi': 0L, 'index': 7,
'defaultHighOutputLatency': 0.034829931972789115, 'maxOutputChannels': 2L, 'name':
u'front', 'defaultHighInputLatency': -1.0}, {'defaultSampleRate': 44100.0,
'defaultLowOutputLatency': 0.005804988662131519, 'defaultLowInputLatency': -1.0,
'maxInputChannels': 0L, 'structVersion': 2L, 'hostApi': 0L, 'index': 8,
'defaultHighOutputLatency': 0.034829931972789115, 'maxOutputChannels': 2L, 'name':
u'surround40', 'defaultHighInputLatency': -1.0}, {'defaultSampleRate': 44100.0,
'defaultLowOutputLatency': 0.005804988662131519, 'defaultLowInputLatency': -1.0,
'maxInputChannels': 0L, 'structVersion': 2L, 'hostApi': 0L, 'index': 9,
'defaultHighOutputLatency': 0.034829931972789115, 'maxOutputChannels': 2L, 'name':
u'surround51', 'defaultHighInputLatency': -1.0}, {'defaultSampleRate': 44100.0,
'defaultLowOutputLatency': 0.005804988662131519, 'defaultLowInputLatency': -1.0,
'maxInputChannels': 0L, 'structVersion': 2L, 'hostApi': 0L, 'index': 10,
'defaultHighOutputLatency': 0.034829931972789115, 'maxOutputChannels': 2L, 'name':
u'surround71', 'defaultHighInputLatency': -1.0}, {'defaultSampleRate': 44100.0,
'defaultLowOutputLatency': 0.005804988662131519, 'defaultLowInputLatency': -1.0,
'maxInputChannels': 0L, 'structVersion': 2L, 'hostApi': 0L, 'index': 11,
'defaultHighOutputLatency': 0.034829931972789115, 'maxOutputChannels': 8L, 'name':
u'hdmi', 'defaultHighInputLatency': -1.0}, {'defaultSampleRate': 44100.0,
'defaultLowOutputLatency': 0.007755102040816327, 'defaultLowInputLatency':
0.007755102040816327, 'maxInputChannels': 128L, 'structVersion': 2L, 'hostApi': 0L,
'index': 12, 'defaultHighOutputLatency': 0.023219954648526078, 'maxOutputChannels': 128L,
'name': u'samplerate', 'defaultHighInputLatency': 0.023219954648526078},
{'defaultSampleRate': 44100.0, 'defaultLowOutputLatency': 0.007755102040816327,
'defaultLowInputLatency': 0.007755102040816327, 'maxInputChannels': 128L, 'structVersion':
2L, 'hostApi': 0L, 'index': 13, 'defaultHighOutputLatency': 0.023219954648526078,
'maxOutputChannels': 128L, 'name': u'speexrate', 'defaultHighInputLatency':
0.023219954648526078}, {'defaultSampleRate': 44100.0, 'defaultLowOutputLatency':
0.005804988662131519, 'defaultLowInputLatency': 0.005804988662131519, 'maxInputChannels':
8L, 'structVersion': 2L, 'hostApi': 0L, 'index': 14, 'defaultHighOutputLatency':
0.034829931972789115, 'maxOutputChannels': 8L, 'name': u'upmix',
'defaultHighInputLatency': 0.034829931972789115}, {'defaultSampleRate': 44100.0,
'defaultLowOutputLatency': 0.005804988662131519, 'defaultLowInputLatency':
0.005804988662131519, 'maxInputChannels': 6L, 'structVersion': 2L, 'hostApi': 0L, 'index':
15, 'defaultHighOutputLatency': 0.034829931972789115, 'maxOutputChannels': 6L, 'name':
u'vdownmix', 'defaultHighInputLatency': 0.034829931972789115}, {'defaultSampleRate':
48000.0, 'defaultLowOutputLatency': 0.021333333333333333, 'defaultLowInputLatency': -1.0,
'maxInputChannels': 0L, 'structVersion': 2L, 'hostApi': 0L, 'index': 16,
'defaultHighOutputLatency': 0.021333333333333333, 'maxOutputChannels': 128L, 'name':
u'default', 'defaultHighInputLatency': -1.0}, {'defaultSampleRate': 48000.0,
'defaultLowOutputLatency': 0.021333333333333333, 'defaultLowInputLatency': -1.0,
'maxInputChannels': 0L, 'structVersion': 2L, 'hostApi': 0L, 'index': 17, '
defaultHighOutputLatency': 0.021333333333333333, 'maxOutputChannels': 2L, 'name': u'dmix',
'defaultHighInputLatency': -1.0}]
错误：
ALSA lib pcm_dsnoop.c:604:(snd_pcm_dsnoop_open) unable to create IPC semaphore
ALSA lib pcm.c:2642:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear
ALSA lib pcm.c:2642:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe
ALSA lib pcm.c:2642:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side
ALSA lib pcm_route.c:869:(find_matching_chmap) Found no matching channel map
ALSA lib pcm_route.c:869:(find_matching_chmap) Found no matching channel map
ALSA lib pcm_route.c:869:(find_matching_chmap) Found no matching channel map
ALSA lib pcm_route.c:869:(find_matching_chmap) Found no matching channel map
ALSA lib pcm_oss.c:377:(_snd_pcm_oss_open) Unknown field port
ALSA lib pcm_oss.c:377:(_snd_pcm_oss_open) Unknown field port
ALSA lib pulse.c:242:(pulse_connect) PulseAudio: Unable to connect: Connection refused
我正在使用 VS 代码，可能 bug.The 问题是我怎样才能摆脱它？
大家好，我通过使用 sudo apt-get install pavucontrol 安装 voice control 来解决这个问题。运行 通过在 therminal.In 语音控制中使用 pavucontrol 将录音设备设置为 0。我的笔记本电脑内置麦克风，alsa 知道找到它。