Julius: libsent/src/phmm/calc_mix.c ソースファイル

00001 
00017 /*
00018  * Copyright (c) 1991-2006 Kawahara Lab., Kyoto University
00019  * Copyright (c) 2000-2005 Shikano Lab., Nara Institute of Science and Technology
00020  * Copyright (c) 2005-2006 Julius project team, Nagoya Institute of Technology, Nagoya Institute of Technology
00021  * All rights reserved
00022  */
00023 
00024 #include <sent/stddefs.h>
00025 #include <sent/htk_hmm.h>
00026 #include <sent/htk_param.h>
00027 #include <sent/hmm.h>
00028 #include <sent/gprune.h>
00029 #include "globalvars.h"
00030 
00038 LOGPROB
00039 calc_mix()
00040 {
00041   int i;
00042   LOGPROB logprob = LOG_ZERO;
00043 
00044   /* compute Gaussian set */
00045   compute_gaussset(OP_state->b, OP_state->mix_num, NULL);
00046   /* computed Gaussians will be set in:
00047      score ... OP_calced_score[0..OP_calced_num]
00048      id    ... OP_calced_id[0..OP_calced_num] */
00049   
00050   /* sum */
00051   for(i=0;i<OP_calced_num;i++) {
00052     OP_calced_score[i] += OP_state->bweight[OP_calced_id[i]];
00053   }
00054   logprob = addlog_array(OP_calced_score, OP_calced_num);
00055   if (logprob <= LOG_ZERO) return LOG_ZERO;
00056   return (logprob / LOG_TEN);
00057 }