问题
I'm working on voice recognition system with Raspberry pi 3B and while running some code I face some problem which is given below. I was tried so many stuffs from the internet but couldn't found some specific problem so please help me about below error!
ALSA lib pcm.c:2495:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear
ALSA lib pcm.c:2495:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe
ALSA lib pcm.c:2495:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side
ALSA lib pcm.c:2495:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.hdmi
ALSA lib pcm.c:2495:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.hdmi
ALSA lib pcm.c:2495:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.modem
ALSA lib pcm.c:2495:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.modem
ALSA lib pcm.c:2495:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.phoneline
ALSA lib pcm.c:2495:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.phoneline
ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find definition 'defaults.bluealsa.device'
ALSA lib conf.c:4528:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:4996:(snd_config_expand) Args evaluate error: No such file or directory
ALSA lib pcm.c:2495:(snd_pcm_open_noupdate) Unknown PCM bluealsa
ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find definition 'defaults.bluealsa.device'
ALSA lib conf.c:4528:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:4996:(snd_config_expand) Args evaluate error: No such file or directory
ALSA lib pcm.c:2495:(snd_pcm_open_noupdate) Unknown PCM bluealsa
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
jack server is not running or cannot be started
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
ALSA lib pcm.c:2495:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear
ALSA lib pcm.c:2495:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe
ALSA lib pcm.c:2495:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side
ALSA lib pcm.c:2495:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.hdmi
ALSA lib pcm.c:2495:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.hdmi
ALSA lib pcm.c:2495:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.modem
ALSA lib pcm.c:2495:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.modem
ALSA lib pcm.c:2495:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.phoneline
ALSA lib pcm.c:2495:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.phoneline
ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find definition 'defaults.bluealsa.device'
ALSA lib conf.c:4528:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:4996:(snd_config_expand) Args evaluate error: No such file or directory
ALSA lib pcm.c:2495:(snd_pcm_open_noupdate) Unknown PCM bluealsa
ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find definition 'defaults.bluealsa.device'
ALSA lib conf.c:4528:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:4996:(snd_config_expand) Args evaluate error: No such file or directory
ALSA lib pcm.c:2495:(snd_pcm_open_noupdate) Unknown PCM bluealsa
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
jack server is not running or cannot be started
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
Say Somrthing For Google Search
Traceback (most recent call last):
File "openBrowser.py", line 18, in <module>
audio = r.listen(source)
File "/home/pi/Desktop/voiceModule/speech_recognition/__init__.py", line 657, in listen
buffer = source.stream.read(source.CHUNK)
File "/home/pi/Desktop/voiceModule/speech_recognition/__init__.py", line 198, in read
return self.pyaudio_stream.read(size, exception_on_overflow=False)
File "/usr/lib/python3/dist-packages/pyaudio.py", line 608, in read
return pa.read_stream(self._stream, num_frames, exception_on_overflow)
OSError: [Errno -9988] Stream closed
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "openBrowser.py", line 19, in <module>
except exception_on_overflow as e:
NameError: name 'exception_on_overflow' is not defined
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "openBrowser.py", line 21, in <module>
print('Now, Processing on your request!')
File "/home/pi/Desktop/voiceModule/speech_recognition/__init__.py", line 188, in __exit__
self.stream.close()
File "/home/pi/Desktop/voiceModule/speech_recognition/__init__.py", line 203, in close
if not self.pyaudio_stream.is_stopped():
File "/usr/lib/python3/dist-packages/pyaudio.py", line 543, in is_stopped
return pa.is_stream_stopped(self._stream)
OSError: [Errno -9988] Stream closed
I face above error while performing below .py code in Raspberry pi:
import speech_recognition as sr
import textToVoice as tv
r = sr.Recognizer()
with sr.Microphone(device_index = 0, sample_rate = 44100, chunk_size = 512) as source:
print('Say Somrthing For Google Search')
try:
audio = r.listen(source)
except exception_on_overflow as e:
print('prob')
print('Now, Processing on your request!')
try:
text =r.recognize_google(audio)
lang = 'en'
tv.tts(text, lang)
print('You Say:\n' + text)
except Exception as e:
print('problem For Fatchning Page')
print(e)
回答1:
[Errno -9998] Invalid number of channels
I improve/clean your code:
import speech_recognition as sr
import textToVoice as tv
r = sr.Recognizer()
with sr.Microphone() as source: # your problem was at this line.
print('Say Something For Google Search')
try:
audio = r.listen(source)
except Exception as e:
print(e)
print('Now, Processing on your request!')
try:
text =r.recognize_google(audio)
lang = 'en'
tv.tts(text, lang)
print('You Say:\n' + text)
except Exception as e:
print('problem For Fatchning Page')
print(e)
You can follow the steps given below for install:
sudo pip install SpeechRecognition
sudo pip install pyaudio
If you found error:
sudo apt-get install python-pyaudio
sudo apt-get install libjack-jackd2-dev portaudio19-dev
Then again:
sudo pip install pyaudio
If you found error try this:
sudo pip install --upgrade pyaudio
NOTE:
Maybe this link help you up:
https://stackoverflow.com/a/48460182/3702377
来源：https://stackoverflow.com/questions/50772605/python3-oserror-errno-9988-stream-closed