Author: brian Date: Thu Jul 10 15:32:43 2008 New Revision: 8989 Modified: freeswitch/trunk/src/mod/asr_tts/mod_pocketsphinx/mod_pocketsphinx.c Log: confidence scores are 0 best to 100 worst Modified: freeswitch/trunk/src/mod/asr_tts/mod_pocketsphinx/mod_pocketsphinx.c ============================================================================== --- freeswitch/trunk/src/mod/asr_tts/mod_pocketsphinx/mod_pocketsphinx.c (original) +++ freeswitch/trunk/src/mod/asr_tts/mod_pocketsphinx/mod_pocketsphinx.c Thu Jul 10 15:32:43 2008 @@ -33,6 +33,7 @@ #include <switch.h> #include <pocketsphinx.h> #include <err.h> +#include <logmath.h> SWITCH_MODULE_LOAD_FUNCTION(mod_pocketsphinx_load); SWITCH_MODULE_SHUTDOWN_FUNCTION(mod_pocketsphinx_shutdown); @@ -354,7 +355,7 @@ { pocketsphinx_t *ps = (pocketsphinx_t *) ah->private_info; switch_status_t status = SWITCH_STATUS_SUCCESS; - int32_t score; + int32_t conf, lconf; if (switch_test_flag(ps, PSFLAG_BARGE)) { switch_clear_flag_locked(ps, PSFLAG_BARGE); @@ -365,8 +366,13 @@ switch_mutex_lock(ps->flag_mutex); switch_clear_flag(ps, PSFLAG_HAS_TEXT); - score = ps_get_prob(ps->ps, &ps->uttid); - ps->confidence = score - score - score / 1000; + conf = ps_get_prob(ps->ps, &ps->uttid); + lconf = logmath_log_to_ln(ps_get_logmath(ps->ps), conf); + ps->confidence = lconf - lconf - lconf; + /* 0(confident) to 100(not confident) score */ + if (ps->confidence > 100) { + ps->confidence = 100; + } switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Recognized: %s, Score: %d\n", ps->hyp, ps->confidence); switch_mutex_unlock(ps->flag_mutex);