NAME
pocketsphinx_continuous - Run speech recognition in continuous listening mode
SYNOPSIS
pocketsphinx_continuous [-infile filename.wav ] [ -inmic yes ] [ options ]...
DESCRIPTION
This program opens the audio device or a file and waits for speech. When it detects an utterance, it performs speech recognition on it.
To record from microphone and decode use
- -inmic yes
To decode a 16kHz 16-bit mono WAV file use
- -infile filename.wav
You can also specify -lm or -fsg or -kws depending on whether you are using a statistical language model or a finite-state grammar or look for a keyphase.
OPTIONS
- -adcdev
-
of audio device to use for input.
- -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
- -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)
- -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
- -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.
- -infile
-
file to transcribe.
- -inmic
-
Transcribe audio from microphone.
- -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
- -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
- -mmap
-
Use memory-mapped I/O (if possible) for model files
- -ncep
-
Number of cep coefficients
- -nfft
-
Size of FFT
- -nfilt
-
Number of filter banks
- -nwpen
-
New word transition penalty
- -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
- -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)
- -time
-
Print word times in file transcription.
- -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
AUTHOR
Written by numerous people at CMU from 1994 onwards. This manual page by David Huggins-Daines <[email protected]>
COPYRIGHT
Copyright © 1994-2016 Carnegie Mellon University. See the file LICENSE included with this package for more information.