Как использовать параметры Pocketsphinx? - PullRequest
0 голосов
/ 30 апреля 2019

Я довольно долго пытался установить Pocketsphinx на встроенное устройство.Но каждый раз, когда я его использую, устройство отвечает:

Input overrun, read calls are too rare(non fatal)

Я пытался уменьшить размер моей модели и словаря, но это не удалось.Чтобы найти другое решение, я увидел, что изменение некоторых параметров может помочь мне:

https://sourceforge.net/p/cmusphinx/discussion/help/thread/3c2223df/

https://cmusphinx.github.io/wiki/pocketsphinxhandhelds/

Можете ли вы помочь мне найти параметры для изменения и какизменить их?

Вот разные параметры:

Arguments list definition:
[NAME]          [DEFLT]     [DESCR]
-adcdev                 Name of audio device to use for input.
-agc            none        Automatic gain control for c0 ('max', 'emax', 'noise', or 'none')
-agcthresh      2.0     Initial threshold for automatic gain control
-allphone               Perform phoneme decoding with phonetic lm
-allphone_ci        no      Perform phoneme decoding with phonetic lm and context-independent units only
-alpha          0.97        Preemphasis parameter
-argfile                Argument file giving extra arguments.
-ascale         20.0        Inverse of acoustic model scale for confidence score calculation
-aw         1       Inverse weight applied to acoustic scores.
-backtrace      no      Print results and backtraces to log.
-beam           1e-48       Beam width applied to every frame in Viterbi search (smaller values mean wider beam)
-bestpath       yes     Run bestpath (Dijkstra) search over word lattice (3rd pass)
-bestpathlw     9.5     Language model probability weight for bestpath search
-ceplen         13      Number of components in the input feature vector
-cmn            live        Cepstral mean normalization scheme ('live', 'batch', or 'none')
-cmninit        40,3,-1     Initial values (comma-separated) for cepstral mean when 'live' is used
-compallsen     no      Compute all senone scores in every frame (can be faster when there are many senones)
-debug                  Verbosity level for debugging messages
-dict                   Main pronunciation dictionary (lexicon) input file
-dictcase       no      Dictionary is case sensitive (NOTE: case insensitivity applies to ASCII characters only)
-dither         no      Add 1/2-bit noise
-doublebw       no      Use double bandwidth filters (same center freq)
-ds         1       Frame GMM computation downsampling ratio
-fdict                  Noise word pronunciation dictionary input file
-feat           1s_c_d_dd   Feature stream type, depends on the acoustic model
-featparams             File containing feature extraction parameters.
-fillprob       1e-8        Filler word transition probability
-frate          100     Frame rate
-fsg                    Sphinx format finite state grammar file
-fsgusealtpron      yes     Add alternate pronunciations to FSG
-fsgusefiller       yes     Insert filler words at each state.
-fwdflat        yes     Run forward flat-lexicon search over word lattice (2nd pass)
-fwdflatbeam        1e-64       Beam width applied to every frame in second-pass flat search
-fwdflatefwid       4       Minimum number of end frames for a word to be searched in fwdflat search
-fwdflatlw      8.5     Language model probability weight for flat lexicon (2nd pass) decoding
-fwdflatsfwin       25      Window of frames in lattice to search for successor words in fwdflat search 
-fwdflatwbeam       7e-29       Beam width applied to word exits in second-pass flat search
-fwdtree        yes     Run forward lexicon-tree search (1st pass)
-hmm                    Directory containing acoustic model files.
-infile                 Audio file to transcribe.
-inmic          no      Transcribe audio from microphone.
-input_endian       little      Endianness of input data, big or little, ignored if NIST or MS Wav
-jsgf                   JSGF grammar file
-keyphrase              Keyphrase to spot
-kws                    A file with keyphrases to spot, one per line
-kws_delay      10      Delay to wait for best detection score
-kws_plp        1e-1        Phone loop probability for keyphrase spotting
-kws_threshold      1       Threshold for p(hyp)/p(alternatives) ratio
-latsize        5000        Initial backpointer table size
-lda                    File containing transformation matrix to be applied to features (single-stream features only)
-ldadim         0       Dimensionality of output of feature transformation (0 to use entire matrix)
-lifter         0       Length of sin-curve for liftering, or 0 for no liftering.
-lm                 Word trigram language model input file
-lmctl                  Specify a set of language model
-lmname                 Which language model in -lmctl to use by default
-logbase        1.0001      Base in which all log-likelihoods calculated
-logfn                  File to write log messages in
-logspec        no      Write out logspectral files instead of cepstra
-lowerf         133.33334   Lower edge of filters
-lpbeam         1e-40       Beam width applied to last phone in words
-lponlybeam     7e-29       Beam width applied to last phone in single-phone words
-lw         6.5     Language model probability weight
-maxhmmpf       30000       Maximum number of active HMMs to maintain at each frame (or -1 for no pruning)
-maxwpf         -1      Maximum number of distinct word exits at each frame (or -1 for no pruning)
-mdef                   Model definition input file
-mean                   Mixture gaussian means input file
-mfclogdir              Directory to log feature files to
-min_endfr      0       Nodes ignored in lattice construction if they persist for fewer than N frames
-mixw                   Senone mixture weights input file (uncompressed)
-mixwfloor      0.0000001   Senone mixture weights floor (applied to data from -mixw file)
-mllr                   MLLR transformation to apply to means and variances
-mmap           yes     Use memory-mapped I/O (if possible) for model files
-ncep           13      Number of cep coefficients
-nfft           512     Size of FFT
-nfilt          40      Number of filter banks
-nwpen          1.0     New word transition penalty
-pbeam          1e-48       Beam width applied to phone transitions
-pip            1.0     Phone insertion penalty
-pl_beam        1e-10       Beam width applied to phone loop search for lookahead
-pl_pbeam       1e-10       Beam width applied to phone loop transitions for lookahead
-pl_pip         1.0     Phone insertion penalty for phone loop
-pl_weight      3.0     Weight for phoneme lookahead penalties
-pl_window      5       Phoneme lookahead window size, in frames
-rawlogdir              Directory to log raw audio files to
-remove_dc      no      Remove DC offset from each frame
-remove_noise       yes     Remove noise with spectral subtraction in mel-energies
-remove_silence     yes     Enables VAD, removes silence frames from processing
-round_filters      yes     Round mel filter frequencies to DFT points
-samprate       16000       Sampling rate
-seed           -1      Seed for random number generator; if less than zero, pick our own
-sendump                Senone dump (compressed mixture weights) input file
-senlogdir              Directory to log senone score files to
-senmgau                Senone to codebook mapping input file (usually not needed)
-silprob        0.005       Silence word transition probability
-smoothspec     no      Write out cepstral-smoothed logspectral files
-svspec                 Subvector specification (e.g., 24,0-11/25,12-23/26-38 or 0-12/13-25/26-38)
-time           no      Print word times in file transcription.
-tmat                   HMM state transition matrix input file
-tmatfloor      0.0001      HMM state transition probability floor (applied to -tmat file)
-topn           4       Maximum number of top Gaussians to use in scoring.
-topn_beam      0       Beam width used to determine top-N Gaussians (or a list, per-feature)
-toprule                Start rule for JSGF (first public rule is default)
-transform      legacy      Which type of transform to use to calculate cepstra (legacy, dct, or htk)
-unit_area      yes     Normalize mel filters to unit area
-upperf         6855.4976   Upper edge of filters
-uw         1.0     Unigram weight
-vad_postspeech     50      Num of silence frames to keep after from speech to silence.
-vad_prespeech      20      Num of speech frames to keep before silence to speech.
-vad_startspeech    10      Num of speech frames to trigger vad from silence to speech.
-vad_threshold      2.0     Threshold for decision between noise and silence frames. Log-ratio between signal level and noise level.
-var                    Mixture gaussian variances input file
-varfloor       0.0001      Mixture gaussian variance floor (applied to data from -var file)
-varnorm        no      Variance normalize each utterance (only if CMN == current)
-verbose        no      Show input filenames
-warp_params                Parameters defining the warping function
-warp_type      inverse_linear  Warping function type (or shape)
-wbeam          7e-29       Beam width applied to word exits
-wip            0.65        Word insertion penalty
-wlen           0.025625    Hamming window length
...