hmm_lookup.c File Reference

Look up logical HMM entry from phone name. More...

#include <sent/stddefs.h>
#include <sent/htk_hmm.h>
#include <sent/ptree.h>

Include dependency graph for hmm_lookup.c:

Go to the source code of this file.

Functions
HTK_HMM_Data *	htk_hmmdata_lookup_physical (HTK_HMM_INFO *hmminfo, char *keyname)
HMM_Logical *	htk_hmmdata_lookup_logical (HTK_HMM_INFO *hmminfo, char *keyname)
static void	hmm_count_logical_num (HTK_HMM_INFO *hmminfo)
void	hmm_add_physical_to_logical (HTK_HMM_INFO *hmminfo)
	Add all physical HMM to logical HMM.
static void	hmm_add_pseudo_phones_sub (HTK_HMM_INFO *hmminfo, char *name)
	Add a pseudo monophone and pseudo biphone to logical HMM.
void	hmm_add_pseudo_phones (HTK_HMM_INFO *hmminfo)
int	hmm_logical_state_num (HMM_Logical *lg)
HTK_HMM_Trans *	hmm_logical_trans (HMM_Logical *lg)
Variables
static int	add_count
	Number of pseudo phones added to logical HMM list.

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Detailed Description

Look up logical HMM entry from phone name.

Author:

Akinobu LEE

Date:

Tue Feb 15 22:34:30 2005

These function is for searching HMM definition from phone name like "g-u+i".

The result is pointer to the corresponding logical HMM (HMM_Logical). The logical HMM holds either pointer to an actual HMM data defined in HTK HMM definition, or pointer to a pseudo HMM set when the query name is biphone or monophone and they are not defined in either HTK HMM definition or HMMList mapping file.

Adding physical HMM defined in HTK HMM definitions and pseudo phones to the logical HMM mapping function is also done here.

Revision

1.1.1.1

Definition in file hmm_lookup.c.

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Function Documentation

HTK_HMM_Data* htk_hmmdata_lookup_physical (  HTK_HMM_INFO *  hmminfo, char *  keyname )

Look up physical (defined in HTK HMM definition file) HMM by its name. Parameters: hmminfo  [in] HMM definition data keyname  [in] key string of HMM name Returns: pointer to the found physical HMM, NULL if not found. Definition at line 62 of file hmm_lookup.c. Referenced by rdhmmlist().

HMM_Logical* htk_hmmdata_lookup_logical (  HTK_HMM_INFO *  hmminfo, char *  keyname )

Look up logical HMM by its name. Parameters: hmminfo  [in] HMM definition data keyname  [in] key string of HMM name Returns: pointer to the found logical HMM, NULL if not found. Definition at line 82 of file hmm_lookup.c. Referenced by get_left_context_HMM(), get_right_context_HMM(), htk_hmm_set_pause_model(), new_str2phseq(), print_hmminfo(), triphone_callback_normal(), triphone_callback_right(), voca_load_htkdict_line(), and voca_mono2tri().

static void hmm_count_logical_num (  HTK_HMM_INFO *  hmminfo  )  [static]

Count the number of logical HMM and store it. Parameters: hmminfo  [in] HMM definition data. Definition at line 99 of file hmm_lookup.c. Referenced by hmm_add_physical_to_logical(), and hmm_add_pseudo_phones().

void hmm_add_physical_to_logical (  HTK_HMM_INFO *  hmminfo  )

Add all physical HMM to logical HMM. This function should be called only if HMMList is not specified. Julius assumes all the triphones should be explicitly mapped using HMMList file. Parameters: hmminfo  [in] HMM definition data. Definition at line 119 of file hmm_lookup.c. Referenced by init_hmminfo().

static void hmm_add_pseudo_phones_sub (  HTK_HMM_INFO *  hmminfo, char *  name )  [static]

Add a pseudo monophone and pseudo biphone to logical HMM. Logical HMM specified in HMMlist precedes pseudo HMM: if some monophones or biphones are already defined in HMMList, pseudo HMM will not be added. Parameters: hmminfo  [in] HMM definition data. name  [in] name of the pseudo phone to add. Definition at line 169 of file hmm_lookup.c. Referenced by hmm_add_pseudo_phones().

void hmm_add_pseudo_phones (  HTK_HMM_INFO *  hmminfo  )

Update logical HMM list by adding all the possible pseudo monophone and biphone to the list. Parameters: hmminfo  [in] HMM definition data. Definition at line 209 of file hmm_lookup.c. Referenced by make_cdset().

int hmm_logical_state_num (  HMM_Logical *  lg  )

Generic function to get the number of states in a logical HMM. Parameters: lg  [in] logical HMM Returns: the number of states in the logical HMM. Definition at line 245 of file hmm_lookup.c. Referenced by do_align(), new_make_word_hmm_with_lm(), next_word(), print_voca_info(), scan_word(), totalstatelen(), wchmm_add_word(), wchmm_duplicate_leafnode(), wchmm_duplicate_state(), and wchmm_link_subword().

HTK_HMM_Trans* hmm_logical_trans (  HMM_Logical *  lg  )

Generic function to get transition matrix of a logical HMM. Parameters: lg  [in] logical HMM Returns: pointer to the transition matrix of the logical HMM. Definition at line 261 of file hmm_lookup.c. Referenced by new_make_word_hmm_with_lm(), next_word(), wchmm_add_word(), wchmm_calc_wordend_arc(), wchmm_duplicate_leafnode(), and wchmm_link_subword().

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