树莓派 + Pocketsphinx + ps3eye 错误：无法打开音频设备

Question

树莓派 + Pocketsphinx + ps3eye 错误：无法打开音频设备

audiospeech-recognitionraspberry-pispeech-to-textcmusphinx

10

我刚在我的树莓派上安装了pocketsphinx。我认为我可能有些疯狂，但不确定是否提供了正确的设备。

每次运行以下命令：

src/programs/pocketsphinx_continuous -adcdev plughw:1,0 -nfft 2048 -samprate 48000

我会得到以下结果：

root@scarlettpi:/usr/install/pocketsphinx-0.8# src/programs/pocketsphinx_continuous -adcdev plughw:1,0 -nfft 2048 -samprate 48000 INFO: cmd_ln.c(691): Parsing command line: /usr/install/pocketsphinx-0.8/src/programs/.libs/lt-pocketsphinx_continuous \ -adcdev plughw:1,0 \ -nfft 2048 \ -samprate 48000

Current configuration: [NAME] [DEFLT] [VALUE] -adcdev plughw:1,0 -agc none none -agcthresh 2.0 2.000000e+00 -alpha 0.97 9.700000e-01 -argfile
-ascale 20.0 2.000000e+01 -aw 1 1 -backtrace no no -beam 1e-48 1.000000e-48 -bestpath yes yes -bestpathlw 9.5 9.500000e+00 -bghist no no -ceplen 13 13 -cmn current current -cmninit 8.0 8.0 -compallsen no no -debug 0 -dict
-dictcase no no -dither no no -doublebw no no -ds 1 1 -fdict
-feat 1s_c_d_dd 1s_c_d_dd -featparams
-fillprob 1e-8 1.000000e-08 -frate 100 100 -fsg
-fsgusealtpron yes yes -fsgusefiller yes yes -fwdflat yes yes -fwdflatbeam 1e-64 1.000000e-64 -fwdflatefwid 4 4 -fwdflatlw 8.5 8.500000e+00 -fwdflatsfwin 25 25 -fwdflatwbeam 7e-29 7.000000e-29 -fwdtree yes yes -hmm
-infile
-input_endian little little -jsgf
-kdmaxbbi -1 -1 -kdmaxdepth 0 0 -kdtree
-latsize 5000 5000 -lda
-ldadim 0 0 -lextreedump 0 0 -lifter 0 0 -lm
-lmctl
-lmname default default -logbase 1.0001 1.000100e+00 -logfn
-logspec no no -lowerf 133.33334 1.333333e+02 -lpbeam 1e-40 1.000000e-40 -lponlybeam 7e-29 7.000000e-29 -lw 6.5 6.500000e+00 -maxhmmpf -1 -1 -maxnewoov 20 20 -maxwpf -1 -1 -mdef
-mean
-mfclogdir
-min_endfr 0 0 -mixw
-mixwfloor 0.0000001 1.000000e-07 -mllr
-mmap yes yes -ncep 13 13 -nfft 512 2048 -nfilt 40 40 -nwpen 1.0 1.000000e+00 -pbeam 1e-48 1.000000e-48 -pip 1.0 1.000000e+00 -pl_beam 1e-10 1.000000e-10 -pl_pbeam 1e-5 1.000000e-05 -pl_window 0 0 -rawlogdir
-remove_dc no no -round_filters yes yes -samprate 16000 4.800000e+04 -seed -1 -1 -sendump
-senlogdir
-senmgau
-silprob 0.005 5.000000e-03 -smoothspec no no -svspec
-time no no -tmat
-tmatfloor 0.0001 1.000000e-04 -topn 4 4 -topn_beam 0 0 -toprule
-transform legacy legacy -unit_area yes yes -upperf 6855.4976 6.855498e+03 -usewdphones no no -uw 1.0 1.000000e+00 -var
-varfloor 0.0001 1.000000e-04 -varnorm no no -verbose no no -warp_params
-warp_type inverse_linear inverse_linear -wbeam 7e-29 7.000000e-29 -wip 0.65 6.500000e-01 -wlen 0.025625 2.562500e-02

INFO: cmd_ln.c(691): Parsing command line: \ -nfilt 20 \ -lowerf 1 \ -upperf 4000 \ -wlen 0.025 \ -transform dct \ -round_filters no \ -remove_dc yes \ -svspec 0-12/13-25/26-38 \ -feat 1s_c_d_dd \ -agc none \ -cmn current \ -cmninit 56,-3,1 \ -varnorm no

Current configuration: [NAME] [DEFLT] [VALUE] -agc none none -agcthresh 2.0 2.000000e+00 -alpha 0.97 9.700000e-01 -ceplen 13 13 -cmn current current -cmninit 8.0 56,-3,1 -dither no no -doublebw no no -feat 1s_c_d_dd 1s_c_d_dd -frate 100 100 -input_endian little little -lda
-ldadim 0 0 -lifter 0 0 -logspec no no -lowerf 133.33334 1.000000e+00 -ncep 13 13 -nfft 512 2048 -nfilt 40 20 -remove_dc no yes -round_filters yes no -samprate 16000 4.800000e+04 -seed -1 -1 -smoothspec no no -svspec 0-12/13-25/26-38 -transform legacy dct -unit_area yes yes -upperf 6855.4976 4.000000e+03 -varnorm no no -verbose no no -warp_params
-warp_type inverse_linear inverse_linear -wlen 0.025625 2.500000e-02

INFO: acmod.c(246): Parsed model-specific feature parameters from /usr/local/share/pocketsphinx/model/hmm/en_US/hub4wsj_sc_8k/feat.params INFO: feat.c(713): Initializing feature stream to type: '1s_c_d_dd', ceplen=13, CMN='current', VARNORM='no', AGC='none' INFO: cmn.c(142): mean[0]= 12.00, mean[1..12]= 0.0 INFO: acmod.c(167): Using subvector specification 0-12/13-25/26-38 INFO: mdef.c(517): Reading model definition: /usr/local/share/pocketsphinx/model/hmm/en_US/hub4wsj_sc_8k/mdef INFO: mdef.c(528): Found byte-order mark BMDF, assuming this is a binary mdef file INFO: bin_mdef.c(336): Reading binary model definition: /usr/local/share/pocketsphinx/model/hmm/en_US/hub4wsj_sc_8k/mdef INFO: bin_mdef.c(513): 50 CI-phone, 143047 CD-phone, 3 emitstate/phone, 150 CI-sen, 5150 Sen, 27135 Sen-Seq INFO: tmat.c(205): Reading HMM transition probability matrices: /usr/local/share/pocketsphinx/model/hmm/en_US/hub4wsj_sc_8k/transition_matrices INFO: acmod.c(121): Attempting to use SCHMM computation module INFO: ms_gauden.c(198): Reading mixture gaussian parameter: /usr/local/share/pocketsphinx/model/hmm/en_US/hub4wsj_sc_8k/means INFO: ms_gauden.c(292): 1 codebook, 3 feature, size: INFO: ms_gauden.c(294): 256x13 INFO: ms_gauden.c(294): 256x13 INFO: ms_gauden.c(294): 256x13 INFO: ms_gauden.c(198): Reading mixture gaussian parameter: /usr/local/share/pocketsphinx/model/hmm/en_US/hub4wsj_sc_8k/variances INFO: ms_gauden.c(292): 1 codebook, 3 feature, size: INFO: ms_gauden.c(294): 256x13 INFO: ms_gauden.c(294): 256x13 INFO: ms_gauden.c(294): 256x13 INFO: ms_gauden.c(354): 0 variance values floored INFO: s2_semi_mgau.c(903): Loading senones from dump file /usr/local/share/pocketsphinx/model/hmm/en_US/hub4wsj_sc_8k/sendump INFO: s2_semi_mgau.c(927): BEGIN FILE FORMAT DESCRIPTION INFO: s2_semi_mgau.c(1022): Using memory-mapped I/O for senones INFO: s2_semi_mgau.c(1296): Maximum top-N: 4 Top-N beams: 0 0 0 INFO: dict.c(317): Allocating 137543 * 20 bytes (2686 KiB) for word entries INFO: dict.c(332): Reading main dictionary: /usr/local/share/pocketsphinx/model/lm/en_US/cmu07a.dic INFO: dict.c(211): Allocated 1010 KiB for strings, 1664 KiB for phones INFO: dict.c(335): 133436 words read INFO: dict.c(341): Reading filler dictionary: /usr/local/share/pocketsphinx/model/hmm/en_US/hub4wsj_sc_8k/noisedict INFO: dict.c(211): Allocated 0 KiB for strings, 0 KiB for phones INFO: dict.c(344): 11 words read INFO: dict2pid.c(396): Building PID tables for dictionary INFO: dict2pid.c(404): Allocating 50^3 * 2 bytes (244 KiB) for word-initial triphones INFO: dict2pid.c(131): Allocated 30200 bytes (29 KiB) for word-final triphones INFO: dict2pid.c(195): Allocated 30200 bytes (29 KiB) for single-phone word triphones INFO: ngram_model_arpa.c(77): No \data\ mark in LM file INFO: ngram_model_dmp.c(142): Will use memory-mapped I/O for LM file INFO: ngram_model_dmp.c(196): ngrams 1=5001, 2=436879, 3=418286 INFO: ngram_model_dmp.c(242): 5001 = LM.unigrams(+trailer) read INFO: ngram_model_dmp.c(288): 436879 = LM.bigrams(+trailer) read INFO: ngram_model_dmp.c(314): 418286 = LM.trigrams read INFO: ngram_model_dmp.c(339): 37293 = LM.prob2 entries read INFO: ngram_model_dmp.c(359): 14370 = LM.bo_wt2 entries read INFO: ngram_model_dmp.c(379): 36094 = LM.prob3 entries read INFO: ngram_model_dmp.c(407): 854 = LM.tseg_base entries read INFO: ngram_model_dmp.c(463): 5001 = ascii word strings read INFO: ngram_search_fwdtree.c(99): 788 unique initial diphones INFO: ngram_search_fwdtree.c(147): 0 root, 0 non-root channels, 60 single-phone words INFO: ngram_search_fwdtree.c(186): Creating search tree INFO: ngram_search_fwdtree.c(191): before: 0 root, 0 non-root channels, 60 single-phone words INFO: ngram_search_fwdtree.c(326): after: max nonroot chan increased to 13428 INFO: ngram_search_fwdtree.c(338): after: 457 root, 13300 non-root channels, 26 single-phone words INFO: ngram_search_fwdflat.c(156): fwdflat: min_ef_width = 4, max_sf_win = 25 INFO: continuous.c(371): /usr/install/pocketsphinx-0.8/src/programs/.libs/lt-pocketsphinx_continuous COMPILED ON: Jul 21 2013, AT: 14:34:06

Mixer load failed: Invalid argument FATAL_ERROR: "continuous.c", line 246: Failed to open audio device

我目前正在使用ps3eye。如果我执行以下简单命令：

arecord -D plughw:1,0 -d 5 -q -f cd -t wav ~/test.wav

一切正常（通过将Raspberrypi连接到电视并运行aplay ~/test.wav进行验证）。请问我做错了什么？

以下是您可能需要的信息（基于我看到的其他帖子）：

root@scarlettpi:/usr/install/pocketsphinx-0.8# aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: ALSA [bcm2835 ALSA], device 0: bcm2835 ALSA [bcm2835 ALSA]
  Subdevices: 8/8
  Subdevice #0: subdevice #0
  Subdevice #1: subdevice #1
  Subdevice #2: subdevice #2
  Subdevice #3: subdevice #3
  Subdevice #4: subdevice #4
  Subdevice #5: subdevice #5
  Subdevice #6: subdevice #6
  Subdevice #7: subdevice #7
root@scarlettpi:/usr/install/pocketsphinx-0.8# 
root@scarlettpi:/usr/install/pocketsphinx-0.8# aplay -L
null
    Discard all samples (playback) or generate zero samples (capture)
pulse
    PulseAudio Sound Server
sysdefault:CARD=ALSA
    bcm2835 ALSA, bcm2835 ALSA
    Default Audio Device
root@scarlettpi:/usr/install/pocketsphinx-0.8#



root@scarlettpi:/usr/install/pocketsphinx-0.8# dpkg -l | grep "alsa"
ii  alsa-base                             1.0.25+3~deb7u1                      all          ALSA driver configuration files
ii  alsa-firmware-loaders                 1.0.25-2                             armhf        ALSA software loaders for specific hardware
ii  alsa-oss                              1.0.25-1                             armhf        ALSA wrapper for OSS applications
ii  alsa-tools                            1.0.25-2                             armhf        Console based ALSA utilities for specific hardware
ii  alsa-utils                            1.0.25-4                             armhf        Utilities for configuring and using ALSA
ii  alsaplayer-alsa                       0.99.80-5.1                          armhf        PCM player designed for ALSA (ALSA output module)
ii  alsaplayer-common                     0.99.80-5.1                          armhf        PCM player designed for ALSA (common files)
ii  alsaplayer-gtk                        0.99.80-5.1                          armhf        PCM player designed for ALSA (GTK+ version)
ii  gstreamer0.10-alsa:armhf              0.10.36-1.1                          armhf        GStreamer plugin for ALSA
ii  libsox-fmt-alsa                       14.4.0-3                             armhf        SoX alsa format I/O library
root@scarlettpi:/usr/install/pocketsphinx-0.8#



root@scarlettpi:/usr/install/pocketsphinx-0.8# dpkg -l | grep pulseaudio
ii  gstreamer0.10-pulseaudio:armhf        0.10.31-3+nmu1                       armhf        GStreamer plugin for PulseAudio
root@scarlettpi:/usr/install/pocketsphinx-0.8#

在安装Pocket Sphinx方面，我按照以下步骤进行：

# uninstall pulse audio if its already installed 
apt-get remove pulseaudio -y 
aptitude purge pulseaudio -y

# sphinxbase install
apt-get install bison -y
cd /usr/install
wget  http://downloads.sourceforge.net/project/cmusphinx/sphinxbase/0.8/sphinxbase-0.8.tar.gz
tar -xvf sphinxbase-0.8.tar.gz
cd sphinxbase-0.8
./configure
make
make install
cd -

# pocketsphinx installwget http://sourceforge.net/projects/cmusphinx/files/pocketsphinx/0.8/pocketsphinx-0.8.tar.gz
tar -xvf pocketsphinx-0.8.tar.gz
cd pocketsphinx-0.8
./configure
make
make install

任何关于IT技术方面的想法或建议都将非常有帮助。谢谢，Malcolm Jones

编辑：还忘记包括以下信息：

root@scarlettpi:/usr/install/pocketsphinx-0.8# arecord -L
null
    Discard all samples (playback) or generate zero samples (capture)
pulse
    PulseAudio Sound Server
sysdefault:CARD=CameraB409241
    USB Camera-B4.09.24.1, USB Audio
    Default Audio Device
front:CARD=CameraB409241,DEV=0
    USB Camera-B4.09.24.1, USB Audio
    Front speakers
surround40:CARD=CameraB409241,DEV=0
    USB Camera-B4.09.24.1, USB Audio
    4.0 Surround output to Front and Rear speakers
surround41:CARD=CameraB409241,DEV=0
    USB Camera-B4.09.24.1, USB Audio
    4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=CameraB409241,DEV=0
    USB Camera-B4.09.24.1, USB Audio
    5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=CameraB409241,DEV=0
    USB Camera-B4.09.24.1, USB Audio
    5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=CameraB409241,DEV=0
    USB Camera-B4.09.24.1, USB Audio
    7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
iec958:CARD=CameraB409241,DEV=0
    USB Camera-B4.09.24.1, USB Audio
    IEC958 (S/PDIF) Digital Audio Output
root@scarlettpi:/usr/install/pocketsphinx-0.8#

- Malcolm Jones

3个回答

2

apt-get remove pulseaudio -y aptitude purge pulseaudio -y

如果您不知道如何配置alsa，最好使用pulseaudio，此外，它已在您的系统上配置。您最好编译支持pulseaudio的sphinxbase。有关更多信息，请阅读FAQ：

http://cmusphinx.sourceforge.net/wiki/faq#qfailed_to_open_audio_device_dev_dsp_no_such_file_or_directory

Mixer load failed: Invalid argument

这是一条关键信息，它表示您的alsa配置不支持级别混音器。如果您不知道如何在alsa配置中添加混音器，则应使用pulseaudio。

./configure --enable-fixed

这也是一个不好的主意，会降低设备的速度和准确性。您的处理器具有FPU，因此不应使用定点模式。

- Nikolay Shmyrev

嗨，Nikolay，非常感谢您的建议。我在sphinxbase和pocketsphinx上执行了“make uninstall”，安装了以下软件包：apt-get install pulseaudio pulseaudio-dbg libpulse-dev libpulse-mainloop-glib0 libpulse0 libpulse0-dbg pulseaudio-esound-compat pulseaudio-esound-compat-dbg libpulse-dev pulseaudio-module-zeroconf -y然后，我重新编译了basesphinx和pocketsphinx（不使用建议中的配置选项）。我假设只要有pulseaudio dev软件包存在，basesphinx/pocketsphinx就会正确地编译它，或者我需要指定一些东西？ - Malcolm Jones

嗨，Nikolay，尝试从命令行运行以下内容：pocketsphinx_continuous -mftt=512 -samprate 48000 -lm /usr/install/pocketsphinx-0.8/custom_language/en_model.lm -dict /usr/install/pocketsphinx-0.8/custom_language/cmudict.hub4.06d.dict -hmm /usr/install/pocketsphinx-0.8/model/hmm并得到以下结果：INFO: continuous.c(371): pocketsphinx_continuous COMPILED ON: Jul 22 2013, AT: 01:21:55Error opening audio device (null) for capture: Connection refused FATAL_ERROR: "continuous.c", line 246: Failed to open audio device有什么想法吗？ - Malcolm Jones

尼古拉，最后一件事，我一直在这里跟踪我的所有进展。我甚至附加了一些来自alsa网站的脚本调试信息（不用担心，我仍在尝试使用pulseaudio）。详情请见：http://www.reddit.com/r/raspberry_pi/comments/1itr9h/how_to_compile_use_pocketsphinx_w_pulseaudio_on/ - Malcolm Jones

1

"Connection refused" 的意思是您没有启动 pulseaudio 守护进程。 - Nikolay Shmyrev

2

“Connection refused” 也可能意味着客户端无法“找到”服务器，例如，“pactl --server 127.0.0.1 info” 可以工作，但是“pactl info”则不行。不确定为什么会出现这种情况，但解决方法是“export PULSE_SERVER=127.0.0.1”。 - Joao Costa

显示剩余3条评论

1

我遇到了无法打开音频设备的相同问题。

http://cmusphinx.sourceforge.net/wiki/faq#qfailed_to_open_audio_device_dev_dsp_no_such_file_or_directory

我通过安装libpulse-dev软件包，然后重新安装sphinxbase和pocketsphinx来解决了这个问题。

- helloiloveit

网页内容由stack overflow 提供, 点击上面的

可以查看英文原文，
原文链接

- Malcolm Jones · Accepted Answer

花费了一些时间，在nikolay-shmyrev的帮助和其他一些来源（在我的答案中将列出）的支持下，我终于得出了可行的答案。

关键假设：

1. 将这些命令作为pi用户运行（之前我是以root身份运行的，这是错误的） 2. 我正在使用连续识别技术，并且我只寻找"唤醒"我的树莓派的能力。唤醒后，我有其他计划来控制它。

我的设置包括：

1. Canakit RaspberryPi 2. 连接到东芝电视机的HDMI电缆 3. USB无线网卡 4. Playstation 3 Eye用于语音识别

接下来，我在我的RaspberryPi上运行了以下命令，使PulseAudio和pocketsphinx与我的Playstation 3 Eye配合使用（如果您发现任何可以改进的地方，请让我知道）。

安装pulse audio /开发包

sudo apt-get install gstreamer0.10-pulseaudio libao4 libasound2-plugins libgconfmm-2.6-1c2 libglademm-2.4-1c2a libpulse-dev libpulse-mainloop-glib0 libpulse-mainloop-glib0-dbg libpulse0 libpulse0-dbg libsox-fmt-pulse paman paprefs pavucontrol pavumeter pulseaudio pulseaudio-dbg pulseaudio-esound-compat pulseaudio-esound-compat-dbg pulseaudio-module-bluetooth pulseaudio-module-gconf pulseaudio-module-jack pulseaudio-module-lirc pulseaudio-module-lirc-dbg pulseaudio-module-x11 pulseaudio-module-zeroconf pulseaudio-module-zeroconf-dbg pulseaudio-utils oss-compat -y

设置ALSA

根据http://forums.debian.net/viewtopic.php?f=16&t=12497的说明进行设置。

sudo \cp -pf /etc/asound.conf /etc/asound.conf.ORIG 
echo 'pcm.pulse {
    type pulse
}

ctl.pulse {
    type pulse
}

pcm.!default {
    type pulse
}

ctl.!default {
    type pulse
}' | sudo tee /etc/asound.conf

确保您的摄像设备在启动时加载

_DEVICE_LOAD_ON_START=$(grep "snd.bcm2835" /etc/modules | wc -l)
if [[ "${_DEVICE_LOAD_ON_START}" = "0" ]]; then

  sudo \cp -pf /etc/modules /etc/modules.ORIG
  echo "snd-bcm2835" | tee -a /etc/modules

fi

# Disallow module loading after startup. This is a security feature since it disallows additional module loading during runtime and on user request.
_DISALLOW_MODULE_LOADING=$(grep "DISALLOW_MODULE_LOADING=1" /etc/default/pulseaudio | wc -l)
if [[ "${_DISALLOW_MODULE_LOADING}" = "0" ]]; then

  sudo \cp -pf /etc/default/pulseaudio /etc/default/pulseaudio.ORIG
  sudo sed -i "s,DISALLOW_MODULE_LOADING=1,DISALLOW_MODULE_LOADING=0,g" /etc/default/pulseaudio

fi

为网络连接设置PulseAudio守护进程

# allow other clients on the network to connect to pulseaudio daemon ( only add auth-anonymous=1 if you know EVERY machine on your LAN ... this could be a security risk otherwise )
sudo \cp -fvp /etc/pulse/system.pa /etc/pulse/system.pa.ORIG
echo "
# ScarlettPi ADDED THIS
load-module module-native-protocol-tcp auth-ip-acl=127.0.0.1;192.168.0.0/24 auth-anonymous=1
load-module module-zeroconf-publish" | sudo tee -a /etc/pulse/system.pa

echo "
# ScarlettPi added this
#load-module module-native-protocol-tcp
#load-module module-zeroconf-publish
load-module module-native-protocol-tcp auth-ip-acl=127.0.0.1;192.168.0.0/24 auth-anonymous=1
load-module module-zeroconf-publish" | sudo tee -a /etc/pulse/default.pa

# check to make sure it looks okay
cat /etc/pulse/default.pa

将默认音频驱动程序从 alsa 更改为 pulseaudio

sudo \cp -fvp /etc/libao.conf /etc/libao.conf.ORIG
sudo sed -i "s,default_driver=alsa,default_driver=pulse,g" /etc/libao.conf 

# daemon settings according to Pi-Musicbox ( https://github.com/woutervanwijk/Pi-MusicBox )
sudo \cp -fvp /etc/pulse/daemon.conf /etc/pulse/daemon.conf.ORIG

echo "
# ScarlettPi added this
high-priority = yes
nice-level = 5
exit-idle-time = -1
resample-method = src-sinc-medium-quality
default-sample-format = s16le
default-sample-rate = 48000
default-sample-channels = 2" | sudo tee -a /etc/pulse/daemon.conf

将pi用户添加到脉冲访问组

sudo adduser pi pulse-access

# shut down the machine to make sure all the settings we just made are loaded correctly
sudo shutdown -r now

确保将`/usr/local/lib`添加到库路径中

export LD_LIBRARY_PATH=/usr/local/lib
export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig

# also add these to your .bashrc so they get set once you login 
echo "
# scarlettPi added this
export LD_LIBRARY_PATH=/usr/local/lib
export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig" | tee -a ~/.bashrc

安装基本的PocketSphinx

# install python dev packages
sudo apt-get install python2.7-dev -y

# sphinxbase install ( required to install pocketsphinx )
sudo apt-get install bison -y
cd ~pi/
wget  http://downloads.sourceforge.net/project/cmusphinx/sphinxbase/0.8/sphinxbase-0.8.tar.gz
tar -xvf sphinxbase-0.8.tar.gz
cd sphinxbase-0.8
./configure
make
sudo make install
cd -

# pocketsphinx install
# set this: LD_LIBRARY_PATH=/path/to/pocketsphinxlibs /usr/local/bin/pocketsphinx_continuous
# http://www.voxforge.org/home/forums/message-boards/speech-recognition-engines/howto-use-pocketsphinx
wget http://sourceforge.net/projects/cmusphinx/files/pocketsphinx/0.8/pocketsphinx-0.8.tar.gz
tar -xvf pocketsphinx-0.8.tar.gz
cd pocketsphinx-0.8
./configure
make
sudo make install
cd -

# install sphinxtrain
wget http://sourceforge.net/projects/cmusphinx/files/sphinxtrain/1.0.8/sphinxtrain-1.0.8.tar.gz
tar -xvf sphinxtrain-1.0.8
cd sphinxtrain-1.0.8
./configure
make
sudo make install
cd -

检查脉冲守护进程是否在运行

ps aux | grep pulse

# If it isn't, start it up yourself ( need to figure out the best way to make this run on boot...init.d script maybe? )
/usr/bin/pulseaudio --start --log-target=syslog --system=false

最后，运行Sphinx

重要提示 您必须使用用户pi，并且pulseaudio服务器需要正在运行

假设已存在语料库文件、.jsgf文件、.dic文件和.lm文件（使用lmtool）

cd ~pi/pocketsphinx-0.8
pocketsphinx_continuous -lm /home/pi/scarlettPi/config/speech/lm/scarlett.lm -dict /home/pi/scarlettPi/config/speech/dict/scarlett.dic -hmm /home/pi/scarlettPi/config/speech/model/hmm/en_US/hub4wsj_sc_8k -silprob  0.1 -wip 1e-4 -bestpath 0

参考资料：

我计划在我的家庭自动化项目的博客文章中添加更多关于为什么使用特定设置和配置的细节，但认为我已经完成了一部分工作，以防有人像我一样被困住，希望能帮助其他人继续他们的工作。感谢大家提供的建议。

树莓派 + Pocketsphinx + ps3eye 错误：无法打开音频设备

安装pulse audio /开发包

设置ALSA

确保您的摄像设备在启动时加载

将默认音频驱动程序从 alsa 更改为 pulseaudio

确保将/usr/local/lib添加到库路径中

安装基本的PocketSphinx

检查脉冲守护进程是否在运行

最后，运行Sphinx

确保将`/usr/local/lib`添加到库路径中