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we now have more confidence 

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@8982 d0543943-73ff-0310-b7d9-9358b9ac24b2
This commit is contained in:
Brian West 2008-07-10 12:41:04 +00:00
parent 285b140571
commit 1806ea2bb2
2 changed files with 21 additions and 17 deletions
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4
src/mod/asr_tts/mod_pocketsphinx/Makefile
View File

@ -1,6 +1,6 @@
SPHINXBASE=sphinxbase-0.4 SPHINXBASE=sphinxbase-0.4.99
SPHINXBASE_DIR=$(switch_srcdir)/libs/$(SPHINXBASE) SPHINXBASE_DIR=$(switch_srcdir)/libs/$(SPHINXBASE)
POCKETSPHINX=pocketsphinx-0.5 POCKETSPHINX=pocketsphinx-0.5.99
POCKETSPHINX_DIR=$(switch_srcdir)/libs/$(POCKETSPHINX) POCKETSPHINX_DIR=$(switch_srcdir)/libs/$(POCKETSPHINX)
SPHINXBASE_LA=$(SPHINXBASE_DIR)/src/libsphinxbase/libsphinxbase.la SPHINXBASE_LA=$(SPHINXBASE_DIR)/src/libsphinxbase/libsphinxbase.la
SPHINXBASE_LA2=$(SPHINXBASE_DIR)/src/libsphinxad/libsphinxad.la SPHINXBASE_LA2=$(SPHINXBASE_DIR)/src/libsphinxad/libsphinxad.la

34
src/mod/asr_tts/mod_pocketsphinx/mod_pocketsphinx.c
View File

@ -69,6 +69,8 @@ typedef struct {
char *hyp; char *hyp;
char *grammar; char *grammar;
int32_t score; int32_t score;
int32_t confidence;
char const *uttid;
cmd_ln_t *config; cmd_ln_t *config;
} pocketsphinx_t; } pocketsphinx_t;
@ -135,19 +137,21 @@ static switch_status_t pocketsphinx_asr_load_grammar(switch_asr_handle_t *ah, co
ps->config = cmd_ln_init(ps->config, ps_args(), FALSE, ps->config = cmd_ln_init(ps->config, ps_args(), FALSE,
"-samprate", "8000", "-samprate", "8000",
"-adcin", "yes",
"-hmm", model, "-hmm", model,
"-lm", lm, "-lm", lm,
"-dict", dic, "-dict", dic,
"-bestpath", "20",
"-maxhmmpf", "2000",
"-maxcdsenpf", "500",
"-maxwpf", "3",
"-ds", "3",
#if 0 #if 0
"-agc", "noise", "-agc", "noise",
"-beam", "1e-60", "-beam", "1e-60",
"-wbeam", "1e-40", "-wbeam", "1e-40",
"-ci_pbeam", "1e-8", "-ci_pbeam", "1e-8",
"-subvqbeam", "1e-2", "-subvqbeam", "1e-2",
"-maxhmmpf", "10000",
"-maxcdsenpf", "1000",
"-maxwpf", "8",
"-ds", "2",
#endif #endif
NULL); NULL);
@ -192,7 +196,7 @@ static switch_status_t pocketsphinx_asr_unload_grammar(switch_asr_handle_t *ah,
/*! function to close the asr interface */ /*! function to close the asr interface */
static switch_status_t pocketsphinx_asr_close(switch_asr_handle_t *ah, switch_asr_flag_t *flags) static switch_status_t pocketsphinx_asr_close(switch_asr_handle_t *ah, switch_asr_flag_t *flags)
{ {
char const *hyp, *uttid; char const *hyp;
int32_t score; int32_t score;
pocketsphinx_t *ps = (pocketsphinx_t *) ah->private_info; pocketsphinx_t *ps = (pocketsphinx_t *) ah->private_info;
@ -200,7 +204,7 @@ static switch_status_t pocketsphinx_asr_close(switch_asr_handle_t *ah, switch_as
if (switch_test_flag(ps, PSFLAG_ALLOCATED)) { if (switch_test_flag(ps, PSFLAG_ALLOCATED)) {
if (switch_test_flag(ps, PSFLAG_READY)) { if (switch_test_flag(ps, PSFLAG_READY)) {
ps_end_utt(ps->ps); ps_end_utt(ps->ps);
hyp = ps_get_hyp(ps->ps, &score, &uttid); hyp = ps_get_hyp(ps->ps, &score, &ps->uttid);
} }
ps_free(ps->ps); ps_free(ps->ps);
ps->ps = NULL; ps->ps = NULL;
@ -272,14 +276,14 @@ static switch_status_t pocketsphinx_asr_feed(switch_asr_handle_t *ah, void *data
} }
if (stop_detect(ps, (int16_t *)data, len / 2)) { if (stop_detect(ps, (int16_t *)data, len / 2)) {
char const *hyp, *uttid; char const *hyp;
switch_mutex_lock(ps->flag_mutex); switch_mutex_lock(ps->flag_mutex);
if ((hyp = ps_get_hyp(ps->ps, &ps->score, &uttid))) { if ((hyp = ps_get_hyp(ps->ps, &ps->score, &ps->uttid))) {
if (!switch_strlen_zero(hyp)) { if (!switch_strlen_zero(hyp)) {
ps_end_utt(ps->ps); ps_end_utt(ps->ps);
switch_clear_flag(ps, PSFLAG_READY); switch_clear_flag(ps, PSFLAG_READY);
if ((hyp = ps_get_hyp(ps->ps, &ps->score, &uttid))) { if ((hyp = ps_get_hyp(ps->ps, &ps->score, &ps->uttid))) {
if (switch_strlen_zero(hyp)) { if (switch_strlen_zero(hyp)) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Lost the text, nevermind....\n"); switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_WARNING, "Lost the text, nevermind....\n");
ps_start_utt(ps->ps, NULL); ps_start_utt(ps->ps, NULL);
@ -350,6 +354,7 @@ static switch_status_t pocketsphinx_asr_get_results(switch_asr_handle_t *ah, cha
{ {
pocketsphinx_t *ps = (pocketsphinx_t *) ah->private_info; pocketsphinx_t *ps = (pocketsphinx_t *) ah->private_info;
switch_status_t status = SWITCH_STATUS_SUCCESS; switch_status_t status = SWITCH_STATUS_SUCCESS;
int32_t score;
if (switch_test_flag(ps, PSFLAG_BARGE)) { if (switch_test_flag(ps, PSFLAG_BARGE)) {
switch_clear_flag_locked(ps, PSFLAG_BARGE); switch_clear_flag_locked(ps, PSFLAG_BARGE);
@ -359,12 +364,11 @@ static switch_status_t pocketsphinx_asr_get_results(switch_asr_handle_t *ah, cha
if (switch_test_flag(ps, PSFLAG_HAS_TEXT)) { if (switch_test_flag(ps, PSFLAG_HAS_TEXT)) {
switch_mutex_lock(ps->flag_mutex); switch_mutex_lock(ps->flag_mutex);
switch_clear_flag(ps, PSFLAG_HAS_TEXT); switch_clear_flag(ps, PSFLAG_HAS_TEXT);
score = ps_get_prob(ps->ps, &ps->uttid);
ps->confidence = score - score - score / 1000;
if (ps->score < 0) { switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Recognized: %s, Score: %d\n", ps->hyp, ps->confidence);
ps->score = 600;
}
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "Recognized: %s, Score: %d\n", ps->hyp, ps->score);
switch_mutex_unlock(ps->flag_mutex); switch_mutex_unlock(ps->flag_mutex);
/* ps->score isn't a confidence score. PocketSphinx doesn't support that yet. */ /* ps->score isn't a confidence score. PocketSphinx doesn't support that yet. */
@ -373,7 +377,7 @@ static switch_status_t pocketsphinx_asr_get_results(switch_asr_handle_t *ah, cha
" <result name=\"%s\">%s</result>\n" " <result name=\"%s\">%s</result>\n"
" <input>%s</input>\n" " <input>%s</input>\n"
"</interpretation>", "</interpretation>",
ps->grammar, ps->score, ps->grammar, ps->confidence,
"match", "match",
ps->hyp, ps->hyp,
ps->hyp ps->hyp