s3_align.h File Reference

data structure for alignment More...

#include <logmath.h>
#include <s3types.h>

Go to the source code of this file.

Classes
struct	align_stseg_s
struct	align_phseg_s
struct	align_wdseg_s
Typedefs
typedef align_stseg_s	align_stseg_t
typedef align_phseg_s	align_phseg_t
typedef align_wdseg_s	align_wdseg_t
Functions
int32	align_init (mdef_t *_mdef, tmat_t *_tmat, dict_t *_dict, cmd_ln_t *_config, logmath_t *_logmath)
void	align_free (void)
int32	align_build_sent_hmm (char *transcript, int insert_sil)
int32	align_destroy_sent_hmm (void)
int32	align_start_utt (char *uttid)
void	align_sen_active (uint8 *senlist, int32 n_sen)
int32	align_frame (int32 *senscr)
int32	align_end_utt (align_stseg_t **stseg, align_phseg_t **phseg, align_wdseg_t **wdseg)

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Detailed Description

data structure for alignment

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Typedef Documentation

typedef struct align_phseg_s align_phseg_t

Phone level segmentation/alignment information

typedef struct align_stseg_s align_stseg_t

State level segmentation/alignment; one entry per frame

typedef struct align_wdseg_s align_wdseg_t

Word level segmentation/alignment information

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Function Documentation

int32 align_build_sent_hmm (  char *  wordstr, int  insert_sil )

Build a sentence HMM for the given transcription (wordstr). A two-level DAG is built: phone-level and state-level. <s> and </s> always added at the beginning and end of sentence to form an augmented transcription. Optional <sil> and noise words added between words in the augmented transcription. wordstr must contain only the transcript; no extraneous stuff such as utterance-id. Phone-level HMM structure has replicated nodes to allow for different left and right context CI phones; hence, each pnode corresponds to a unique triphone in the sentence HMM. Return 0 if successful, <0 if any error (eg, OOV word encountered). Parameters: wordstr  In: Word transcript insert_sil  In: Whether to insert silences/fillers

int32 align_destroy_sent_hmm (  void   )

int32 align_end_utt (  align_stseg_t **  stseg_out, align_phseg_t **  phseg_out, align_wdseg_t **  wdseg_out )

All frames consumed. Trace back best Viterbi state sequence and dump it out. Parameters: stseg_out  Out: list of state segmentation phseg_out  Out: list of phone segmentation wdseg_out  Out: list of word segmentation

int32 align_frame (  int32 *  senscr  )

One frame of Viterbi time alignment. Parameters: senscr  In: array of senone scores this frame

void align_free (  void   )

int32 align_init (  mdef_t *  _mdef, tmat_t *  _tmat, dict_t *  _dict, cmd_ln_t *  _config, logmath_t *  _logmath )

void align_sen_active (  uint8 *  senlist, int32  n_sen )

Flag the active senones. Parameters: senlist  Out: senlist[s] TRUE iff active in frame n_sen  In: Size of senlist[] array

int32 align_start_utt (  char *  uttid  )

Start Viterbi alignment using the sentence HMM previously built. Assumes that each utterance will only be aligned once; state member variables initialized during sentence HMM building.

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