int cmu_syl_boundary(const cst_item *i,const cst_val *v)
{
/* Returns TRUE if this should be a syllable boundary */
/* This is of course phone set dependent */
int p, n, nn;
if (v == NULL)
return TRUE;
else if (cmu_is_silence(val_string(val_car(v))))
return TRUE;
else if (!cmu_has_vowel_in_list(v)) /* no more vowels so rest *all* coda */
return FALSE;
else if (!cmu_has_vowel_in_syl(i)) /* need a vowel */
return FALSE;
else if (cmu_is_vowel(val_string(val_car(v))))
return TRUE;
else if (val_cdr(v) == NULL)
return FALSE;
else
{ /* so there is following vowel, and multiple phones left */
p = cmu_sonority(item_feat_string(i,"name"));
n = cmu_sonority(val_string(val_car(v)));
nn = cmu_sonority(val_string(val_car(val_cdr(v))));
if ((p <= n) && (n <= nn))
return TRUE;
else
return FALSE;
}
}
int cmu_syl_boundary_mo(const cst_item *i,const cst_val *rest)
{
/* syl boundary maximal onset */
int d2v;
if (rest == NULL)
return TRUE;
else if (cmu_is_silence(val_string(val_car(rest))))
return TRUE;
else if (!cmu_has_vowel_in_list(rest))
/* no more vowels so rest *all* coda */
return FALSE;
else if (!cmu_has_vowel_in_syl(i)) /* need a vowel */
/* no vowel yet in syl so keep copying */
return FALSE;
else if (cmu_is_vowel(val_string(val_car(rest))))
/* next is a vowel, syl has vowel, so this is a break */
return TRUE;
else if (cst_streq("ng",val_string(val_car(rest))))
/* next is "ng" which can't start a word internal syl */
return FALSE;
else
{
/* want to know if from rest to the next vowel is a valid onset */
d2v = cmulex_dist_to_vowel(rest);
if (d2v < 2)
return TRUE;
else if (d2v > 3)
return FALSE;
else if (d2v == 2)
return cmulex_onset_bigram(rest);
else /* if (d2v == 3) */
return cmulex_onset_trigram(rest);
return TRUE;
}
}
