POCKETSPHINX_BATCH(1)

NAME
pocketsphinx_batch - Run speech recognition in batch mode

SYNOPSIS
pocketsphinx_batch -ctl ctlfile -cepdir cepdir -cepext .mfc [ options ]...

DESCRIPTION

Run speech recognition over a list of utterances in batchmode. A list of arguments follows:

-adchdr
    Size of audio file header in bytes (headers are ignored)

-adcin
    Input is raw audio data

-agc
    Automatic gain control for c0 ('max', 'emax', 'noise', or 'none')

-agcthresh
    Initial threshold for automatic gain control

-allphone
    phoneme decoding with phonetic lm

-allphone_ci
    Perform phoneme decoding with phonetic lm and context-independent units only

-alpha
    Preemphasis parameter

-argfile
    file giving extra arguments.

-ascale
    Inverse of acoustic model scale for confidence score calculation

-aw Inverse weight applied to acoustic scores.

-backtrace
    Print results and backtraces to log file.

-beam
    Beam width applied to every frame in Viterbi search (smaller values mean wider beam)

-bestpath
    Run bestpath (Dijkstra) search over word lattice (3rd pass)

-bestpathlw
    Language model probability weight for bestpath search

-build_outdirs
    Create missing subdirectories in output directory

-cepdir
    files directory (prefixed to filespecs in control file)

-cepext
    Input files extension (suffixed to filespecs in control file)

-ceplen
    Number of components in the input feature vector

-cmn
    Cepstral mean normalization scheme ('current', 'prior', or 'none')

-cmninit
    Initial values (comma-separated) for cepstral mean when 'prior' is used

-compallsen
    Compute all senone scores in every frame (can be faster when there are many senones)

-ctl
    file listing utterances to be processed

-ctlcount
    No. of utterances to be processed (after skipping -ctloffset entries)

-ctlincr
    Do every Nth line in the control file

-ctloffset
    No. of utterances at the beginning of -ctl file to be skipped

-ctm
    output in CTM file format (may require post-sorting)

-debug
    level for debugging messages

-dict
    pronunciation dictionary (lexicon) input file

-dictcase
    Dictionary is case sensitive (NOTE: case insensitivity applies to ASCII characters only)

-dither
    Add 1/2-bit noise

-doublebw
    Use double bandwidth filters (same center freq)

-ds Frame GMM computation downsampling ratio

-fdict
    word pronunciation dictionary input file

-feat
    Feature stream type, depends on the acoustic model

-featparams
    containing feature extraction parameters.

-fillprob
    Filler word transition probability

-frate
    Frame rate

-fsg
    format finite state grammar file

-fsgctl
    file listing FSG file to use for each utterance

-fsgdir
    directory for FSG files

-fsgext
    extension for FSG files (including leading dot)

-fsgusealtpron
    Add alternate pronunciations to FSG

-fsgusefiller
    Insert filler words at each state.

-fwdflat
    Run forward flat-lexicon search over word lattice (2nd pass)

-fwdflatbeam
    Beam width applied to every frame in second-pass flat search

-fwdflatefwid
    Minimum number of end frames for a word to be searched in fwdflat search

-fwdflatlw
    Language model probability weight for flat lexicon (2nd pass) decoding

-fwdflatsfwin
    Window of frames in lattice to search for successor words in fwdflat search

-fwdflatwbeam
    Beam width applied to word exits in second-pass flat search

-fwdtree
    Run forward lexicon-tree search (1st pass)

-hmm
    containing acoustic model files.

-hyp
    output file name

-hypseg
    output with segmentation file name

-input_endian
    Endianness of input data, big or little, ignored if NIST or MS Wav

-jsgf
    grammar file

-keyphrase
    to spot

-kws
    file with keyphrases to spot, one per line

-kws_delay
    Delay to wait for best detection score

-kws_plp
    Phone loop probability for keyword spotting

-kws_threshold
    Threshold for p(hyp)/p(alternatives) ratio

-latsize
    Initial backpointer table size

-lda
    containing transformation matrix to be applied to features (single-stream features only)

-ldadim
    Dimensionality of output of feature transformation (0 to use entire matrix)

-lifter
    Length of sin-curve for liftering, or 0 for no liftering.

-lm trigram language model input file

-lmctl
    a set of language model

-lmname
    language model in -lmctl to use by default

-lmnamectl
    file listing LM name to use for each utterance

-logbase
    Base in which all log-likelihoods calculated

-logfn
    to write log messages in

-logspec
    Write out logspectral files instead of cepstra

-lowerf
    Lower edge of filters

-lpbeam
    Beam width applied to last phone in words

-lponlybeam
    Beam width applied to last phone in single-phone words

-lw Language model probability weight

-maxhmmpf
    Maximum number of active HMMs to maintain at each frame (or -1 for no pruning)

-maxwpf
    Maximum number of distinct word exits at each frame (or -1 for no pruning)

-mdef
    definition input file

-mean
    gaussian means input file

-mfclogdir
    to log feature files to

-min_endfr
    Nodes ignored in lattice construction if they persist for fewer than N frames

-mixw
    mixture weights input file (uncompressed)

-mixwfloor
    Senone mixture weights floor (applied to data from -mixw file)

-mllr
    transformation to apply to means and variances

-mllrctl
    file listing MLLR transforms to use for each utterance

-mllrdir
    directory for MLLR transforms

-mllrext
    extension for MLLR transforms (including leading dot)

-mmap
    Use memory-mapped I/O (if possible) for model files

-nbest
    Number of N-best hypotheses to write to -nbestdir (0 for no N-best)

-nbestdir
    for writing N-best hypothesis lists

-nbestext
    Extension for N-best hypothesis list files

-ncep
    Number of cep coefficients

-nfft
    Size of FFT

-nfilt
    Number of filter banks

-nwpen
    New word transition penalty

-outlatbeam
    Minimum posterior probability for output lattice nodes

-outlatdir
    for dumping word lattices

-outlatext
    Filename extension for dumping word lattices

-outlatfmt
    Format for dumping word lattices (s3 or htk)

-pbeam
    Beam width applied to phone transitions

-pip
    Phone insertion penalty

-pl_beam
    Beam width applied to phone loop search for lookahead

-pl_pbeam
    Beam width applied to phone loop transitions for lookahead

-pl_pip
    Phone insertion penalty for phone loop

-pl_weight
    Weight for phoneme lookahead penalties

-pl_window
    Phoneme lookahead window size, in frames

-rawlogdir
    to log raw audio files to

-remove_dc
    Remove DC offset from each frame

-remove_noise
    Remove noise with spectral subtraction in mel-energies

-remove_silence
    Enables VAD, removes silence frames from processing

-round_filters
    Round mel filter frequencies to DFT points

-samprate
    Sampling rate

-seed
    Seed for random number generator; if less than zero, pick our own

-sendump
    dump (compressed mixture weights) input file

-senin
    Input is senone score dump files

-senlogdir
    to log senone score files to

-senmgau
    to codebook mapping input file (usually not needed)

-silprob
    Silence word transition probability

-smoothspec
    Write out cepstral-smoothed logspectral files

-svspec
    specification (e.g., 24,0-11/25,12-23/26-38 or 0-12/13-25/26-38)

-tmat
    state transition matrix input file

-tmatfloor
    HMM state transition probability floor (applied to -tmat file)

-topn
    Maximum number of top Gaussians to use in scoring.

-topn_beam
    Beam width used to determine top-N Gaussians (or a list, per-feature)

-toprule
    rule for JSGF (first public rule is default)

-transform
    Which type of transform to use to calculate cepstra (legacy, dct, or htk)

-unit_area
    Normalize mel filters to unit area

-upperf
    Upper edge of filters

-uw Unigram weight

-vad_postspeech
    Num of silence frames to keep after from speech to silence.

-vad_prespeech
    Num of speech frames to keep before silence to speech.

-vad_startspeech
    Num of speech frames to trigger vad from silence to speech.

-vad_threshold
    Threshold for decision between noise and silence frames. Log-ratio between signal level and noise level.

-var
    gaussian variances input file

-varfloor
    Mixture gaussian variance floor (applied to data from -var file)

-varnorm
    Variance normalize each utterance (only if CMN == current)

-verbose
    Show input filenames

-warp_params
    defining the warping function

-warp_type
    Warping function type (or shape)

-wbeam
    Beam width applied to word exits

-wip
    Word insertion penalty

-wlen
    Hamming window length

To do batchmode recognition, you will need to specify a control file, using -ctl This is a simple text file containing one entry per line. Each entry is the name of an input file relative to the -cepdir directory, and without the filename extension (which is given in the -cepext argument).

If you are using acoustic feature files as input (see sphinx_fe(1) for information on how to generate these), you can also specify a subpart of a file, using the following format:

    FILENAME START-FRAME END-FRAME UTTERANCE-ID

AUTHOR
Written by numerous people at CMU from 1994 onwards. This manual page by David Huggins-Daines <dhuggins@cs.cmu.edu>

COPYRIGHT
Copyright © 1994-2016 Carnegie Mellon University. See the file LICENSE included with this package for more information.

SEE ALSO
pocketsphinx_continuous(1), sphinx_fe(1).