PocketSphinx
0.6
phone_loop_search.h
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/* -*- c-basic-offset: 4; indent-tabs-mode: nil -*- */
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/* ====================================================================
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* Copyright (c) 2008 Carnegie Mellon University. All rights
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* reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* This work was supported in part by funding from the Defense Advanced
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* Research Projects Agency and the National Science Foundation of the
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* United States of America, and the CMU Sphinx Speech Consortium.
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*
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* THIS SOFTWARE IS PROVIDED BY CARNEGIE MELLON UNIVERSITY ``AS IS'' AND
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* ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY
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* NOR ITS EMPLOYEES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* ====================================================================
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*
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*/
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#ifndef __PHONE_LOOP_SEARCH_H__
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#define __PHONE_LOOP_SEARCH_H__
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/* SphinxBase headers. */
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#include <sphinxbase/cmd_ln.h>
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#include <sphinxbase/logmath.h>
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#include <sphinxbase/ngram_model.h>
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#include <sphinxbase/listelem_alloc.h>
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/* Local headers. */
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#include "
pocketsphinx_internal.h
"
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#include "
hmm.h
"
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struct
phone_loop_s
{
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hmm_t
hmm
;
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int16
ciphone
;
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int16
frame
;
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};
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typedef
struct
phone_loop_s
phone_loop_t
;
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struct
phone_loop_renorm_s
{
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int
frame_idx
;
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int32
norm
;
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};
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typedef
struct
phone_loop_renorm_s
phone_loop_renorm_t
;
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struct
phone_loop_search_s
{
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ps_search_t
base
;
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hmm_context_t
*
hmmctx
;
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int16
frame
;
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int16
n_phones
;
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phone_loop_t
*
phones
;
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int32
best_score
;
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int32
beam
;
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int32
pbeam
;
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int32
pip
;
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glist_t
renorm
;
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};
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typedef
struct
phone_loop_search_s
phone_loop_search_t
;
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ps_search_t
*phone_loop_search_init(cmd_ln_t *config,
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acmod_t
*acmod,
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dict_t
*dict);
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#define phone_loop_search_score(pls,ci) \
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((pls == NULL) ? 0 \
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: (hmm_bestscore(&pls->phones[ci].hmm) - (pls)->best_score))
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#endif
/* __PHONE_LOOP_SEARCH_H__ */
pocketsphinx_internal.h
Internal implementation of PocketSphinx decoder.
phone_loop_s
Phone loop structure.
Definition:
phone_loop_search.h:63
phone_loop_s::frame
int16 frame
Last frame this phone was active.
Definition:
phone_loop_search.h:66
ps_search_s
Base structure for search module.
Definition:
pocketsphinx_internal.h:86
phone_loop_search_s::base
ps_search_t base
Base search structure.
Definition:
phone_loop_search.h:83
phone_loop_search_s::pbeam
int32 pbeam
Phone exit pruning beam width.
Definition:
phone_loop_search.h:91
phone_loop_search_s::frame
int16 frame
Current frame being searched.
Definition:
phone_loop_search.h:85
phone_loop_search_s::hmmctx
hmm_context_t * hmmctx
HMM context structure.
Definition:
phone_loop_search.h:84
hmm_t
An individual HMM among the HMM search space.
hmm.h
Implementation of HMM base structure.
phone_loop_s::hmm
hmm_t hmm
Basic HMM structure.
Definition:
phone_loop_search.h:64
phone_loop_renorm_s::norm
int32 norm
Normalization constant.
Definition:
phone_loop_search.h:75
phone_loop_s::ciphone
int16 ciphone
Context-independent phone ID.
Definition:
phone_loop_search.h:65
hmm_context_t
Shared information between a set of HMMs.
phone_loop_search_s::phones
phone_loop_t * phones
Array of phone arcs.
Definition:
phone_loop_search.h:87
dict_t
a structure for a dictionary.
Definition:
dict.h:79
phone_loop_search_s::best_score
int32 best_score
Best Viterbi score in current frame.
Definition:
phone_loop_search.h:89
phone_loop_search_s::beam
int32 beam
HMM pruning beam width.
Definition:
phone_loop_search.h:90
phone_loop_search_s::pip
int32 pip
Phone insertion penalty ("language score").
Definition:
phone_loop_search.h:92
phone_loop_renorm_s::frame_idx
int frame_idx
Frame of renormalization.
Definition:
phone_loop_search.h:74
acmod_s
Acoustic model structure.
Definition:
acmod.h:148
phone_loop_search_s::n_phones
int16 n_phones
Size of phone array.
Definition:
phone_loop_search.h:86
phone_loop_search_s
Phone loop search structure.
Definition:
phone_loop_search.h:82
phone_loop_search_s::renorm
glist_t renorm
List of renormalizations.
Definition:
phone_loop_search.h:93
phone_loop_renorm_s
Renormalization event.
Definition:
phone_loop_search.h:73
src
libpocketsphinx
phone_loop_search.h
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