uttproc.h

WinCE平台上的语音识别程序

/* -*- c-basic-offset: 4; indent-tabs-mode: nil -*- */
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 * This work was supported in part by funding from the Defense Advanced 
 * Research Projects Agency and the National Science Foundation of the 
 * United States of America, and the CMU Sphinx Speech Consortium.
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/* uttproc.h: Internal uttproc functions */
#ifndef __UTTPROC_H__
#define __UTTPROC_H__

#include <time.h>
#include <feat.h>
#include <prim_type.h>

int32 uttproc_init(void);
int32 uttproc_end(void);

/* Set the feature computation object. */
void uttproc_set_feat(feat_t *fcb);

/* The global feature computation object. */
extern feat_t *fcb;

/* Build and store an utterance ID (called if none given) */
char *build_uttid(char const *utt);

/* Parses line of control file (with optional start and end frames and uttid) */
int32 uttproc_parse_ctlfile_entry(char *line,
				  char *filename, int32 * sf, int32 * ef,
				  char *idspec);

/* Returns #frames converted to feature vectors; -1 if error */
int32 uttproc_file2feat(const char *utt, int32 sf, int32 ef, int32 nosearch);

/* Returns a pointer to the internal feature buffer */
int32 uttproc_get_featbuf(mfcc_t ****feat);

/* Open an audio file. */
FILE * adcfile_open(char const *utt);
/* Read from audio file. */
int32 adc_file_read(FILE *uttfp, int16 * buf, int32 max);

/*------------------------------------------------------------------------*
 * Compute an elapsed time from two timeval structs
 */
double MakeSeconds(struct timeval const *s, struct timeval const *e);


#endif /* __UTTPROC_H__ */