julius/hmm_check.c File Reference

Functions for checking triphone model. More...

#include <julius.h>

Include dependency graph for hmm_check.c:

Go to the source code of this file.

Defines
#define	PHSTEP   10
	Malloc step for phoneme conversion.
Functions
static HMM_Logical **	new_str2phseq (char *str, HTK_HMM_INFO *hmminfo, int *len_ret)
	Convert phoneme sequences to logical HMM sequences, and output the result.
static boolean	test_expand_triphone (HTK_HMM_INFO *hmminfo)
void	hmm_check (HTK_HMM_INFO *hmminfo, WORD_INFO *winfo)

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Detailed Description

Functions for checking triphone model.

Author:

Akinobu LEE

Date:

Thu Mar 17 20:50:07 2005

Revision

1.5

Definition in file hmm_check.c.

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Function Documentation

static HMM_Logical** new_str2phseq	(	char *	str,
		HTK_HMM_INFO *	hmminfo,
		int *	len_ret
	)			[static]

Convert phoneme sequences to logical HMM sequences, and output the result.

This function is for testing procedure to convert words in dictionary to corresponding HMM sequences in Julius/Julian, given an HMMList and HTK HMM definition.

Given a space-separated list of phoneme names in a string, each phonemes will be converted to context-dependent style (if using triphone model), and then converted to HMM sequence that will finally be used for recognition. Then, the following data will be output for all HMM:

• Original phone HMM name,
• Logical HMM name that is converted from above,
• Physical or pseudo HMM name that will actually be used.

Additionally, specifying '|' in the string gives a word boundary between phonemes, and triphone conversion will consider the cross-word expansion.

Parameters:

	str	[i/o] string that contains space-saparated phoneme sequence.
	hmminfo	[in] HMM definition structure
	len_ret	[out] num of elements in the return value

Returns:

the newly allocated pointer array to the converted logical HMMs.

Definition at line 80 of file hmm_check.c.

Referenced by test_expand_triphone().

static boolean test_expand_triphone

(

HTK_HMM_INFO *

hmminfo

)

[static]

Read in line from stdin as phoneme sequence and try convertion to triphone for checking.

Parameters:

hmminfo

[in] HMM definition structure

Definition at line 252 of file hmm_check.c.

Referenced by hmm_check().

void hmm_check	(	HTK_HMM_INFO *	hmminfo,
		WORD_INFO *	winfo
	)

Mode to do interactive triphone conversion check ("-check triphone").

Parameters:

	hmminfo	[in] HMM definition structure
	winfo	[in] word dictionary

Definition at line 294 of file hmm_check.c.

Referenced by initialize_dict(), and multigram_read_file().

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