title: RaspberryPi + Pocketsphinx + ps3eye Error: Failed to open audio device
body: <p>just installed pocketsphinx on my raspberry pi. Think i'm going crazy but not sure if I'm providing the correct device.</p>
  
  <p>Whenever I run:</p>
  
  <blockquote>
    <p>src/programs/pocketsphinx_continuous -adcdev plughw:1,0 -nfft 2048
    -samprate 48000</p>
  </blockquote>
  
  <p>I get the following:</p>
  
  <blockquote>
    <p>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 </p>
    
    <p>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<br>
    -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<br>
    -dictcase no      no
    -dither       no      no
    -doublebw no      no
    -ds       1       1
    -fdict<br>
    -feat     1s_c_d_dd   1s_c_d_dd
    -featparams<br>
    -fillprob 1e-8        1.000000e-08
    -frate        100     100
    -fsg<br>
    -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<br>
    -infile<br>
    -input_endian little      little
    -jsgf<br>
    -kdmaxbbi -1      -1
    -kdmaxdepth   0       0
    -kdtree<br>
    -latsize  5000        5000
    -lda<br>
    -ldadim       0       0
    -lextreedump  0       0
    -lifter       0       0
    -lm<br>
    -lmctl<br>
    -lmname       default     default
    -logbase  1.0001      1.000100e+00
    -logfn<br>
    -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<br>
    -mean<br>
    -mfclogdir<br>
    -min_endfr    0       0
    -mixw<br>
    -mixwfloor    0.0000001   1.000000e-07
    -mllr<br>
    -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<br>
    -remove_dc    no      no
    -round_filters    yes     yes
    -samprate 16000       4.800000e+04
    -seed     -1      -1
    -sendump<br>
    -senlogdir<br>
    -senmgau<br>
    -silprob  0.005       5.000000e-03
    -smoothspec   no      no
    -svspec<br>
    -time     no      no
    -tmat<br>
    -tmatfloor    0.0001      1.000000e-04
    -topn     4       4
    -topn_beam    0       0
    -toprule<br>
    -transform    legacy      legacy
    -unit_area    yes     yes
    -upperf       6855.4976   6.855498e+03
    -usewdphones  no      no
    -uw       1.0     1.000000e+00
    -var<br>
    -varfloor 0.0001      1.000000e-04
    -varnorm  no      no
    -verbose  no      no
    -warp_params<br>
    -warp_type    inverse_linear  inverse_linear
    -wbeam        7e-29       7.000000e-29
    -wip      0.65        6.500000e-01
    -wlen     0.025625    2.562500e-02</p>
    
    <p>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 </p>
    
    <p>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<br>
    -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<br>
    -warp_type    inverse_linear  inverse_linear
    -wlen     0.025625    2.500000e-02</p>
    
    <p>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</p>
    
    <p>Mixer load failed: Invalid argument FATAL_ERROR: "continuous.c", line
    246: Failed to open audio device</p>
  </blockquote>
  
  <p>I'm using a ps3eye currently. If i do a simple:</p>
  
  <blockquote>
    <p>arecord -D plughw:1,0 -d 5 -q -f cd -t wav ~/test.wav </p>
  </blockquote>
  
  <p>Everything works fine ( Verified this by hooking up Raspberrypi to TV via HDMI and running aplay ~/test.wav )</p>
  
  <p>What am I doing wrong guys?</p>
  
  <p>Information you might need ( based on other posts i've seen ):</p>
  
  <pre><code>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# 
  </code></pre>
  
  <p>Also in terms of installing pocket sphinx I did the following:</p>
  
  <pre><code># 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
  </code></pre>
  
  <p>Any ideas or advice in the right direction would be extremely helpful.</p>
  
  <p>Thanks,</p>
  
  <p>Malcolm Jones</p>
  
  <p>EDIT:</p>
  
  <p>Forgot to include this information as well:</p>
  
  <pre><code>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# 
  </code></pre>