int
main(int argc, char *argv[])
{
FILE *fp;
char *hmmdefs_file;
char *hmmlist_file;
char *outfile;
int i;
hmmdefs_file = hmmlist_file = outfile = NULL;
for(i=1;i<argc;i++) {
if (hmmdefs_file == NULL) {
hmmdefs_file = argv[i];
} else if (hmmlist_file == NULL) {
hmmlist_file = argv[i];
} else if (outfile == NULL) {
outfile = argv[i];
} else {
usage(argv[0]);
return -1;
}
}
if (hmmdefs_file == NULL || hmmlist_file == NULL || outfile == NULL) {
usage(argv[0]);
return -1;
}
hmminfo = hmminfo_new();
printf("---- reading hmmdefs ----\n");
printf("filename: %s\n", hmmdefs_file);
/* read hmmdef file */
undef_para(¶);
if (init_hmminfo(hmminfo, hmmdefs_file, hmmlist_file, ¶) == FALSE) {
fprintf(stderr, "--- terminated\n");
return -1;
}
if (hmminfo->is_triphone) {
fprintf(stderr, "making pseudo bi/mono-phone for IW-triphone\n");
if (make_cdset(hmminfo) == FALSE) {
fprintf(stderr, "ERROR: m_fusion: failed to make context-dependent state set\n");
return -1;
}
}
printf("\n------------------------------------------------------------\n");
print_hmmdef_info(stdout, hmminfo);
printf("\n");
printf("------------------------------------------------------------\n");
printf("---- writing logical-to-physical mapping and pseudo phone info ----\n");
printf("filename: %s\n", outfile);
if ((fp = fopen_writefile(outfile)) == NULL) {
fprintf(stderr, "failed to open %s for writing\n", outfile);
return -1;
}
if (save_hmmlist_bin(fp, hmminfo) == FALSE) {
fprintf(stderr, "failed to write to %s\n", outfile);
return -1;
}
if (fclose_writefile(fp) != 0) {
fprintf(stderr, "failed to close %s\n", outfile);
return -1;
}
printf("\n");
printf("binary HMMList and pseudo phone definitions are written to \"%s\"\n", outfile);
return 0;
}
/**
* <JA>
* @brief 音響HMMをファイルから読み込み，認識用にセットアップする.
*
* ファイルからのHMM定義の読み込み，HMMList ファイルの読み込み，
* パラメータ型のチェック，マルチパス扱いの on/off, ポーズモデルの設定など
* が行われ，認識のための準備が行われる.
*
* この音響モデルの入力となる音響パラメータの種類やパラメータもここで
* 最終決定される. 決定には，音響HMMのヘッダ，（バイナリHMMの場合，存
* 在すれば）バイナリHMMに埋め込まれた特徴量情報，jconf の設定（ばらば
* らに，あるいは -htkconf 使用時）などの情報が用いられる.
* </JA>
* <EN>
* @brief Read in an acoustic HMM from file and setup for recognition.
*
* This functions reads HMM definitions from file, reads also a
* HMMList file, makes logical-to-physical model mapping, determine
* required parameter type, determine whether multi-path handling is needed,
* and find pause model in the definitions.
*
* The feature vector extraction parameters are also finally
* determined in this function. Informations used for the
* determination is (1) the header values in hmmdefs, (2) embedded
* parameters in binary HMM if you are reading a binary HMM made with
* recent mkbinhmm, (3) user-specified parameters in jconf
* configurations (either by separatedly specified or by -htkconf
* options).
*
* </EN>
*
* @param amconf [in] AM configuration variables
* @param jconf [i/o] global configuration variables
*
* @return the newly created HMM information structure, or NULL on failure.
*
*/
static HTK_HMM_INFO *
initialize_HMM(JCONF_AM *amconf, Jconf *jconf)
{
HTK_HMM_INFO *hmminfo;
/* at here, global variable "para" holds values specified by user or
by user-specified HTK config file */
if (amconf->analysis.para_hmm.loaded == 1) {
jlog("Warning: you seems to read more than one acoustic model for recognition, but\n");
jlog("Warning: previous one already has header-embedded acoustic parameters\n");
jlog("Warning: if you have different parameters, result may be wrong!\n");
}
/* allocate new hmminfo */
hmminfo = hmminfo_new();
/* load hmmdefs */
if (init_hmminfo(hmminfo, amconf->hmmfilename, amconf->mapfilename, &(amconf->analysis.para_hmm)) == FALSE) {
hmminfo_free(hmminfo);
return NULL;
}
/* set multipath mode flag */
if (amconf->force_multipath) {
jlog("STAT: m_fusion: force multipath HMM handling by user request\n");
hmminfo->multipath = TRUE;
} else {
hmminfo->multipath = hmminfo->need_multipath;
}
/* only MFCC is supported for audio input */
/* MFCC_{0|E}[_D][_A][_Z][_N] is supported */
/* check parameter type of this acoustic HMM */
if (jconf->input.type == INPUT_WAVEFORM) {
/* Decode parameter extraction type according to the training
parameter type in the header of the given acoustic HMM */
if ((hmminfo->opt.param_type & F_BASEMASK) != F_MFCC) {
jlog("ERROR: m_fusion: for direct speech input, only HMM trained by MFCC is supported\n");
hmminfo_free(hmminfo);
return NULL;
}
/* set acoustic analysis parameters from HMM header */
calc_para_from_header(&(amconf->analysis.para), hmminfo->opt.param_type, hmminfo->opt.vec_size);
}
/* check if tied_mixture */
if (hmminfo->is_tied_mixture && hmminfo->codebooknum <= 0) {
jlog("ERROR: m_fusion: this tied-mixture model has no codebook!?\n");
hmminfo_free(hmminfo);
return NULL;
}
#ifdef PASS1_IWCD
/* make state clusters of same context for inter-word triphone approx. */
if (hmminfo->is_triphone) {
if (hmminfo->cdset_root == NULL) {
jlog("STAT: making pseudo bi/mono-phone for IW-triphone\n");
if (make_cdset(hmminfo) == FALSE) {
jlog("ERROR: m_fusion: failed to make context-dependent state set\n");
hmminfo_free(hmminfo);
return NULL;
}
} else {
jlog("STAT: pseudo phones are loaded from binary hmmlist file\n");
}
/* add those `pseudo' biphone and monophone to the logical HMM names */
/* they points not to the defined HMM, but to the CD_Set structure */
hmm_add_pseudo_phones(hmminfo);
}
#endif
/* find short pause model and set to hmminfo->sp */
htk_hmm_set_pause_model(hmminfo, amconf->spmodel_name);
hmminfo->cdset_method = amconf->iwcdmethod;
hmminfo->cdmax_num = amconf->iwcdmaxn;
if (amconf->analysis.para_htk.loaded == 1) apply_para(&(amconf->analysis.para), &(amconf->analysis.para_htk));
if (amconf->analysis.para_hmm.loaded == 1) apply_para(&(amconf->analysis.para), &(amconf->analysis.para_hmm));
apply_para(&(amconf->analysis.para), &(amconf->analysis.para_default));
return(hmminfo);
}
