问题描述
不确定为什么会这样。试图获得一个简单的PyAudio示例，该示例在我的RaspBerry Pi 4上工作。代码...
import pyaudio
p = pyaudio.PyAudio()
导致以下错误。
Expression 'alsa_snd_pcm_hw_params_set_period_size_near( pcm,hwParams,&alsaPeriodFrames,&dir )' Failed in 'src/hostapi/alsa/pa_linux_alsa.c',line: 924
Expression 'alsa_snd_pcm_hw_params_set_period_size_near( pcm,line: 924
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) UnkNown PCM cards.pcm.rear
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) UnkNown PCM cards.pcm.center_lfe
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) UnkNown PCM cards.pcm.side
ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find deFinition 'cards.bcm2835_headpho.pcm.surround51.0:CARD=0'
ALSA lib conf.c:4568:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:5047:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) UnkNown PCM surround21
ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find deFinition 'cards.bcm2835_headpho.pcm.surround51.0:CARD=0'
ALSA lib conf.c:4568:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:5047:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) UnkNown PCM surround21
ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find deFinition 'cards.bcm2835_headpho.pcm.surround40.0:CARD=0'
ALSA lib conf.c:4568:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:5047:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) UnkNown PCM surround40
ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find deFinition 'cards.bcm2835_headpho.pcm.surround51.0:CARD=0'
ALSA lib conf.c:4568:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:5047:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) UnkNown PCM surround41
ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find deFinition 'cards.bcm2835_headpho.pcm.surround51.0:CARD=0'
ALSA lib conf.c:4568:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:5047:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) UnkNown PCM surround50
ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find deFinition 'cards.bcm2835_headpho.pcm.surround51.0:CARD=0'
ALSA lib conf.c:4568:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:5047:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) UnkNown PCM surround51
ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find deFinition 'cards.bcm2835_headpho.pcm.surround71.0:CARD=0'
ALSA lib conf.c:4568:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:5047:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) UnkNown PCM surround71
ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find deFinition 'cards.bcm2835_headpho.pcm.iec958.0:CARD=0,AES0=4,AES1=130,AES2=0,AES3=2'
ALSA lib conf.c:4568:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:5047:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) UnkNown PCM iec958
ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find deFinition 'cards.bcm2835_headpho.pcm.iec958.0:CARD=0,AES3=2'
ALSA lib conf.c:4568:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:5047:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) UnkNown PCM spdif
ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find deFinition 'cards.bcm2835_headpho.pcm.iec958.0:CARD=0,AES3=2'
ALSA lib conf.c:4568:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:5047:(snd_config_expand) Evaluate error: No such file or directory
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) UnkNown PCM spdif
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) UnkNown PCM cards.pcm.hdmi
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) UnkNown PCM cards.pcm.hdmi
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) UnkNown PCM cards.pcm.modem
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) UnkNown PCM cards.pcm.modem
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) UnkNown PCM cards.pcm.phoneline
ALSA lib pcm.c:2565:(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:4568:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:5036:(snd_config_expand) Args evaluate error: No such file or directory
ALSA lib pcm.c:2565:(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:4568:(_snd_config_evaluate) function snd_func_refer returned error: No such file or directory
ALSA lib conf.c:5036:(snd_config_expand) Args evaluate error: No such file or directory
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) UnkNown PCM bluealsa
Expression 'alsa_snd_pcm_hw_params_set_period_size_near( pcm,line: 924
ALSA lib pcm.c:2565:(snd_pcm_open_noupdate) UnkNown PCM input
Expression 'alsa_snd_pcm_hw_params_set_period_size_near( pcm,line: 924
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
我一直在网上搜索，还没有真正找到答案是什么原因导致该问题或如何解决。任何帮助将不胜感激。
解决方法
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