libsent/src/phmm/vsegment.c File Reference

Do viterbi alignment for the input. More...

#include <sent/stddefs.h>
#include <sent/htk_param.h>
#include <sent/hmm.h>

Go to the source code of this file.

Functions
LOGPROB	viterbi_segment (HMM *hmm, HTK_Param *param, HMMWork *wrk, boolean multipath, int *endstates, int ulen, int **id_ret, int **seg_ret, LOGPROB **uscore_ret, int *slen_ret)
	Perform Viterbi alignment.

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Detailed Description

Do viterbi alignment for the input.

Author:

Akinobu LEE

Date:

Fri Feb 18 19:29:22 2005

Revision

1.1.1.1

Definition in file vsegment.c.

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Function Documentation

LOGPROB viterbi_segment	(	HMM *	hmm,
		HTK_Param *	param,
		HMMWork *	wrk,
		boolean	multipath,
		int *	endstates,
		int	ulen,
		int **	id_ret,
		int **	seg_ret,
		LOGPROB **	uscore_ret,
		int *	slen_ret
	)

Perform Viterbi alignment.

This function performs viterbi alignment for the given sentence HMM, input parameter and unit definition. Any segmentatino unit (word, phoneme state, etc.) is allowed: the segmentation unit should be specified by specifying a list of state id which are the end of each unit. For example, if you want to obtain phoneme alignment, the list of state number that exist at the end of phones should be specified by endstates.

Parameters:

	hmm	[in] sentence HMM to be matched
	param	[in] input parameter data
	wrk	[i/o] HMM computation work area
	multipath	[in] TRUE if need multi-path handling
	endstates	[in] list of state id that corrsponds to the ends of units
	ulen	[in] total number of units in the hmm
	id_ret	[out] Pointer to store the newly allocated array of the resulting id sequence of units on the best path.
	seg_ret	[out] Pointer to store the newly allocated array of the resulting end frame of each unit on the best path.
	uscore_ret	[out] Pointer to store the newly allocated array of the resulting score at the end frame of each unit on the best path.
	slen_ret	[out] Pointer to store the total number of units on the best path.

Returns:

the total acoustic score for the whole input.

Definition at line 53 of file vsegment.c.

Referenced by do_align().

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