cst_utterance *default_pause_insertion(cst_utterance *u)
{
/* Add initial silences and silence at each phrase break */
const char *silence;
const cst_item *w;
cst_item *p, *s;
silence = val_string(feat_val(u->features,"silence"));
/* Insert initial silence */
s = relation_head(utt_relation(u,"Segment"));
if (s == NULL)
s = relation_append(utt_relation(u,"Segment"),NULL);
else
s = item_prepend(s,NULL);
item_set_string(s,"name",silence);
for (p=relation_head(utt_relation(u,"Phrase")); p; p=item_next(p))
{
for (w = item_last_daughter(p); w; w=item_prev(w))
{
s = path_to_item(w,"R:SylStructure.daughtern.daughtern.R:Segment");
if (s)
{
s = item_append(s,NULL);
item_set_string(s,"name",silence);
break;
}
}
}
return u;
}
static void apostrophe_s(cst_utterance *u)
{
cst_item *s;
cst_item *schwa;
const cst_phoneset *ps = u->vox->phoneset;
const char *pname, *word;
for (s=item_next(UTT_REL_HEAD(u,SEGMENT));
s;
s=item_next(s))
{
word = val_string(ffeature(s, "R:"SYLSTRUCTURE".P.P.name"));
if (cst_streq("'s", word))
{
pname = item_feat_string(item_prev(s),"name");
if ((strchr("fa",*phone_feature_string(ps,pname,"ctype")) != NULL)
&& (strchr("dbg",
*phone_feature_string(ps,pname,"cplace")) == NULL))
/* needs a schwa */
{
schwa = item_prepend(s,NULL);
item_set_string(schwa,"name","ax");
item_prepend(item_as(s,SYLSTRUCTURE),schwa);
}
else if (cst_streq("-",phone_feature_string(ps,pname,"cvox")))
item_set_string(s,"name","s");
}
else if (cst_streq("'ve", word)
|| cst_streq("'ll", word)
|| cst_streq("'d", word))
{
if (cst_streq("-",ffeature_string(s,"p."PH_VC)))
{
schwa = item_prepend(s,NULL);
item_set_string(schwa,"name","ax");
item_prepend(item_as(s,SYLSTRUCTURE),schwa);
}
}
}
}
