Data Structures | |
| struct | CD_State_Set |
| Context-dependent state set, equivalent to HTK_HMM_State, part of pseudo phone. More... | |
| struct | CD_State_Set |
| Context-dependent state set, equivalent to HTK_HMM_State, part of pseudo phone. More... | |
| struct | _cd_set |
| Context-dependent HMM set (called "pseudo") for a logical context. More... | |
| struct | HMM_CDSET_INFO |
| Top structure to hold all the HMM sets. More... | |
| struct | _HMM_logical |
| Logical HMM to map logical names to physical/pseudo HMM. More... | |
| #define | CD_STATE_SET_STEP 10 |
| CD_State_Set memory allocation step. | |
| static void | cdset_init (HTK_HMM_INFO *hmminfo) |
| static CD_Set * | cdset_new () |
| CD_Set * | cdset_lookup (HTK_HMM_INFO *hmminfo, char *cdstr) |
| CD_Set * | lcdset_lookup_by_hmmname (HTK_HMM_INFO *hmminfo, char *hmmname) |
| CD_Set * | rcdset_lookup_by_hmmname (HTK_HMM_INFO *hmminfo, char *hmmname) |
| static void | put_cdset (void *ptr) |
| void | put_all_cdinfo (HTK_HMM_INFO *hmminfo) |
| boolean | regist_cdset (APATNODE **root, HTK_HMM_Data *d, char *cdname) |
| boolean | remove_cdset (HTK_HMM_INFO *hmminfo, char *cdname) |
| boolean | make_cdset (HTK_HMM_INFO *hmminfo) |
| static void | callback_free_lcdset_content (void *arg) |
| void | free_cdset (APATNODE **root) |
Typedefs | |
| typedef _cd_set | CD_Set |
| Context-dependent HMM set (called "pseudo") for a logical context. | |
| typedef _HMM_logical | HMM_Logical |
| Logical HMM to map logical names to physical/pseudo HMM. | |
This structure will be used to handle cross-word triphone on the 1st pass. At a triphone HMM at the edge of a word in the tree lexicon, the state nodes should have a set of HMM states with the same base phone of all triphones at the same location instead of a single state information. This context-dependent HMM set for cross-word triphone is also called as "pseudo" phone in Julius.
When computing the 1st pass, the maximum (or average or N-best average) value from the likelihoods of state set will be taken as the output probability of the states instead of the actual cross-word triphone.
This approximated value will be fixed by re-computation on the 2nd pass.
Context-dependent HMM set (called "pseudo") for a logical context.
Context-dependent HMM set for a logical context (e.g. "a-k", "e+b", "e", each corresponds to triphone list of "a-k+*", "*-e+b", "*-e+*").
| typedef struct _HMM_logical HMM_Logical |
Logical HMM to map logical names to physical/pseudo HMM.
This data maps logical HMM name to physical (defined) HMM or pseudo HMM. The logical HMM names are basically loaded from HMMList mapping file. Biphone/monophone HMM names, not listed in the HMMList file, are mapped to pseudo phones, which represents the context-dependent HMM set.
For example, if logical biphone HMM name "e-k" is defined in HMM definition file or its mapping is specified in the HMMList file, the Logical HMM name "e-k" will be mapped to the corresponding defined HMM. If "e-k" does not exist in both HMM definition file and HMMList file, triphones whose name matches "e-k+*" will be gathered to phone context-dependent HMM set "e-k", and the logical HMM name "e-k" will be mapped to this HMM set.
The context-dependent HMM is also called a "pseudo" phone in Julius.
| static void cdset_init | ( | HTK_HMM_INFO * | hmminfo | ) | [static] |
Initialize total pseudo HMM information in the given HMM definition data.
| hmminfo | [i/o] HTK HMM definitions |
Definition at line 87 of file cdset.c.
Referenced by make_cdset().
| static CD_Set* cdset_new | ( | ) | [static] |
Allocate a CD_Set data for a new pseudo phone set.
Definition at line 98 of file cdset.c.
Referenced by regist_cdset().
| CD_Set* cdset_lookup | ( | HTK_HMM_INFO * | hmminfo, | |
| char * | cdstr | |||
| ) |
Look up for a pseudo phone with the name, and return the content.
| hmminfo | [in] HMM information to search for. | |
| cdstr | [in] string of pseudo phone name to search. |
Definition at line 112 of file cdset.c.
Referenced by hmm_add_pseudo_phones_sub(), lcdset_lookup_by_hmmname(), and rcdset_lookup_by_hmmname().
| CD_Set* lcdset_lookup_by_hmmname | ( | HTK_HMM_INFO * | hmminfo, | |
| char * | hmmname | |||
| ) |
Look up for a pseudo phone by the "left - center" name of the given phone name.
| hmminfo | [in] HMM information to search for. | |
| hmmname | [in] string of the phone name. |
Definition at line 132 of file cdset.c.
Referenced by outprob_style(), and wchmm_add_word().
| CD_Set* rcdset_lookup_by_hmmname | ( | HTK_HMM_INFO * | hmminfo, | |
| char * | hmmname | |||
| ) |
| static void put_cdset | ( | void * | ptr | ) | [static] |
Output text information of a pseudo phone to stdout.
| ptr | [in] pointer to a pseudo phone set. |
Definition at line 162 of file cdset.c.
Referenced by put_all_cdinfo().
| void put_all_cdinfo | ( | HTK_HMM_INFO * | hmminfo | ) |
| boolean regist_cdset | ( | APATNODE ** | root, | |
| HTK_HMM_Data * | d, | |||
| char * | cdname | |||
| ) |
Register a physical HMM as a member of a pseudo phone set.
| root | [i/o] root node of HMM search index node. | |
| d | [in] a physical defined HMM to be added. | |
| cdname | [in] name of the pseudo phone set. |
Definition at line 206 of file cdset.c.
Referenced by make_cdset().
| boolean remove_cdset | ( | HTK_HMM_INFO * | hmminfo, | |
| char * | cdname | |||
| ) |
| boolean make_cdset | ( | HTK_HMM_INFO * | hmminfo | ) |
Construct the whole pseudo HMM information, and also add them to the logical Triphone tree.
| hmminfo | [i/o] HMM definition data. The generated data will also be stored within this. |
Definition at line 351 of file cdset.c.
Referenced by initialize_HMM().
| static void callback_free_lcdset_content | ( | void * | arg | ) | [static] |
callback for aptree function to free the content of pseudo phone set.
| arg | [in] pointer to the pseudo phone set to be free |
Definition at line 388 of file cdset.c.
Referenced by free_cdset().
| void free_cdset | ( | APATNODE ** | root | ) |
Remove all the registered category-indexed pseudo state sets. This function will be called when a grammar is changed to re-build the state sets.
| root | [i/o] pointer to hold the root index pointer |
Definition at line 410 of file cdset.c.
Referenced by hmminfo_free().
1.5.0