Pocketsphinx_continuous failed to open audio device

Question

After installing pocketsphinx, when I tried to run the pocketsphinx_continuous program, I got this error.

_oss.c (103): Failed to open audio device (/ dev / dsp): No such file or directory FATAL_ERROR: "continu.c", line 242: Invalid open audio device

How to solve this problem?

Answer 1

Install the following from the terminal:

sudo apt-get update; sudo apt-get dist-upgrade; sudo apt-get install pavucontrol linux-sound-base alsa-base alsa-utils lightdm ubuntu-desktop linux-image- uname -r libasound2; sudo apt-get -y -reinstall install linux-sound-base alsa-base alsa-utils lightdm ubuntu-desktop linux-image- uname -r libasound2; killall pulseaudio; rm -r ~ / .pulse *; ubunt-support-status; sudo usermod -aG cat /etc/group | grep -e '^pulse:' -e '^audio:' -e '^pulse-access:' -e '^pulse-rt:' -e '^video:' | awk -F: '{print $1}' | tr '\n' ',' | sed 's:,$::g' cat /etc/group | grep -e '^pulse:' -e '^audio:' -e '^pulse-access:' -e '^pulse-rt:' -e '^video:' | awk -F: '{print $1}' | tr '\n' ',' | sed 's:,$::g' cat /etc/group | grep -e '^pulse:' -e '^audio:' -e '^pulse-access:' -e '^pulse-rt:' -e '^video:' | awk -F: '{print $1}' | tr '\n' ',' | sed 's:,$::g' whoami

sudo apt-get install pulseaudio

sudo apt-get install libpulse-dev

sudo apt-get install osspd

It may take some time, but it worked fine for me.

Answer 2

You are having trouble installing pocketsphinx

To provide easy access to pocketsphinx, just install pocketsphinx from the repository, moreover, recently pocketsphinx has been placed in the Ubuntu repository .

If you compile pocketsphinx from sources, the installation process for pocketsphinx is not a problem if you understand the complexity of audio subsystems in Linux. The sound subsystem, unfortunately, is complicated, but as soon as you receive it, everything will be easier. Historically, the audio subsystem is quite fragmented. It includes the following main framework:

Old Unix-like DSP mechanism - everything is handled by the kernel driver. Applications interact with the / dev / dsp device to produce and record sound. ALSA is a new audio subsystem, partly in the kernel, but also has a libasound library for users. ALSA also provides DSP compatibility level through the snd_pcm_oss driver, which creates a / dev / dsp device and emulates audio Pulseaudio - an even newer system that runs on top of the ALSA libasound library but provides an audio server to centralize all processing. To communicate with the library, it also provides the libpulse library, which should be used by applications for recording sound Jack - another sound server also running on top of ALSA, provides the libjack library. Like Pulseaudio, there are other not very popular frameworks, but sphinxbase does not support them. For example, ESD (the old GNOME sound server), ARTS (the old KDE sound server), Portaudio (the portable library used on Windows, Linux, and Mac). The recommended audio structure on Ubuntu is pulseaudio.

Sphinxbase and pocketsphinx support all frameworks and automatically select the one you need at compile time. The highest priority is in the pulseaudio structure. Before installing sphinxbase, you need to decide which structure to use. After that, you need to configure the development part of the appropriate structure.

For example, it is recommended that you install the libpulse-dev package to provide access to pulseaudio , after which sphinxbase will automatically work with Pulseaudio. When you work with pulseaudio, you do not need other frameworks. On the embedded device, try setting up alsa.

In the future, you can quickly get an answer to this and other questions by reading the Pocketsphinx FAQ

Answer 3

The following worked perfectly for me:

 sudo apt-get update;sudo apt-get dist-upgrade; sudo apt-get install pavucontrol linux-sound-base alsa-base alsa-utils sudo apt-get install libsound2 sudo apt-get install pulseaudio sudo apt-get install libpulse-dev sudo apt-get install osspd 

And the result is below:

 momen@momenlaptop :~$ pocketsphinx_continuous -inmic yes INFO: pocketsphinx.c(152): Parsed model-specific feature parameters from /usr/local/share/pocketsphinx/model/en-us/en-us/feat.params Current configuration: [NAME] [DEFLT] [VALUE] -agc none none -agcthresh 2.0 2.000000e+00 -allphone -allphone_ci no no -alpha 0.97 9.700000e-01 -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 -ceplen 13 13 -cmn live batch -cmninit 40,3,-1 41.00,-5.29,-0.12,5.09,2.48,-4.07,-1.37,-1.78,-5.08,-2.05,-6.45,-1.42,1.17 -compallsen no no -debug 0 -dict /usr/local/share/pocketsphinx/model/en-us/cmudict-en-us.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 /usr/local/share/pocketsphinx/model/en-us/en-us -input_endian little little -jsgf -keyphrase -kws -kws_delay 10 10 -kws_plp 1e-1 1.000000e-01 -kws_threshold 1 1.000000e+00 -latsize 5000 5000 -lda -ldadim 0 0 -lifter 0 22 -lm /usr/local/share/pocketsphinx/model/en-us/en-us.lm.bin -lmctl -lmname -logbase 1.0001 1.000100e+00 -logfn -logspec no no -lowerf 133.33334 1.300000e+02 -lpbeam 1e-40 1.000000e-40 -lponlybeam 7e-29 7.000000e-29 -lw 6.5 6.500000e+00 -maxhmmpf 30000 30000 -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 512 512 -nfilt 40 25 -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-10 1.000000e-10 -pl_pip 1.0 1.000000e+00 -pl_weight 3.0 3.000000e+00 -pl_window 5 5 -rawlogdir -remove_dc no no -remove_noise yes yes -remove_silence yes yes -round_filters yes yes -samprate 16000 1.600000e+04 -seed -1 -1 -sendump -senlogdir -senmgau -silprob 0.005 5.000000e-03 -smoothspec no no -svspec 0-12/13-25/26-38 -tmat -tmatfloor 0.0001 1.000000e-04 -topn 4 4 -topn_beam 0 0 -toprule -transform legacy dct -unit_area yes yes -upperf 6855.4976 6.800000e+03 -uw 1.0 1.000000e+00 -vad_postspeech 50 50 -vad_prespeech 20 20 -vad_startspeech 10 10 -vad_threshold 2.0 2.000000e+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: feat.c(715): Initializing feature stream to type: '1s_c_d_dd', ceplen=13, CMN='batch', VARNORM='no', AGC='none' INFO: acmod.c(162): Using subvector specification 0-12/13-25/26-38 INFO: mdef.c(518): Reading model definition: /usr/local/share/pocketsphinx/model/en-us/en-us/mdef INFO: mdef.c(531): 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/en-us/en-us/mdef INFO: bin_mdef.c(516): 42 CI-phone, 137053 CD-phone, 3 emitstate/phone, 126 CI-sen, 5126 Sen, 29324 Sen-Seq INFO: tmat.c(149): Reading HMM transition probability matrices: /usr/local/share/pocketsphinx/model/en-us/en-us/transition_matrices INFO: acmod.c(113): Attempting to use PTM computation module INFO: ms_gauden.c(127): Reading mixture gaussian parameter: /usr/local/share/pocketsphinx/model/en-us/en-us/means INFO: ms_gauden.c(242): 42 codebook, 3 feature, size: INFO: ms_gauden.c(244): 128x13 INFO: ms_gauden.c(244): 128x13 INFO: ms_gauden.c(244): 128x13 INFO: ms_gauden.c(127): Reading mixture gaussian parameter: /usr/local/share/pocketsphinx/model/en-us/en-us/variances INFO: ms_gauden.c(242): 42 codebook, 3 feature, size: INFO: ms_gauden.c(244): 128x13 INFO: ms_gauden.c(244): 128x13 INFO: ms_gauden.c(244): 128x13 INFO: ms_gauden.c(304): 222 variance values floored INFO: ptm_mgau.c(476): Loading senones from dump file /usr/local/share/pocketsphinx/model/en-us/en-us/sendump INFO: ptm_mgau.c(500): BEGIN FILE FORMAT DESCRIPTION INFO: ptm_mgau.c(563): Rows: 128, Columns: 5126 INFO: ptm_mgau.c(595): Using memory-mapped I/O for senones INFO: ptm_mgau.c(838): Maximum top-N: 4 INFO: phone_loop_search.c(114): State beam -225 Phone exit beam -225 Insertion penalty 0 INFO: dict.c(320): Allocating 138824 * 32 bytes (4338 KiB) for word entries INFO: dict.c(333): Reading main dictionary: /usr/local/share/pocketsphinx/model/en-us/cmudict-en-us.dict INFO: dict.c(213): Dictionary size 134723, allocated 1016 KiB for strings, 1679 KiB for phones INFO: dict.c(336): 134723 words read INFO: dict.c(358): Reading filler dictionary: /usr/local/share/pocketsphinx/model/en-us/en-us/noisedict INFO: dict.c(213): Dictionary size 134728, allocated 0 KiB for strings, 0 KiB for phones INFO: dict.c(361): 5 words read INFO: dict2pid.c(396): Building PID tables for dictionary INFO: dict2pid.c(406): Allocating 42^3 * 2 bytes (144 KiB) for word-initial triphones INFO: dict2pid.c(132): Allocated 42672 bytes (41 KiB) for word-final triphones INFO: dict2pid.c(196): Allocated 42672 bytes (41 KiB) for single-phone word triphones INFO: ngram_model_trie.c(354): Trying to read LM in trie binary format INFO: ngram_search_fwdtree.c(74): Initializing search tree INFO: ngram_search_fwdtree.c(101): 791 unique initial diphones INFO: ngram_search_fwdtree.c(186): Creating search channels INFO: ngram_search_fwdtree.c(323): Max nonroot chan increased to 152609 INFO: ngram_search_fwdtree.c(333): Created 723 root, 152481 non-root channels, 53 single-phone words INFO: ngram_search_fwdflat.c(157): fwdflat: min_ef_width = 4, max_sf_win = 25 INFO: continuous.c(307): pocketsphinx_continuous COMPILED ON: Sep 10 2017, AT: 22:55:34 INFO: continuous.c(252): Ready.... INFO: continuous.c(261): Listening... INFO: ngram_search_fwdtree.c(949): cand_sf[] increased to 64 entries INFO: ngram_search.c(459): Resized backpointer table to 10000 entries INFO: ngram_search.c(467): Resized score stack to 200000 entries INFO: ngram_search.c(459): Resized backpointer table to 20000 entries INFO: ngram_search.c(467): Resized score stack to 400000 entries INFO: ngram_search.c(459): Resized backpointer table to 40000 entries INFO: ngram_search.c(467): Resized score stack to 800000 entries INFO: cmn_live.c(88): Update from < 41.00 -5.29 -0.12 5.09 2.48 -4.07 -1.37 -1.78 -5.08 -2.05 -6.45 -1.42 1.17 > INFO: cmn_live.c(105): Update to < 69.63 8.29 -5.53 -0.71 6.93 0.21 -8.90 -0.03 2.80 -1.20 3.76 5.92 -5.86 >