Fix some 's' cases for IPA G2P (#4460)

Signed-off-by: Jocelyn Huang <[email protected]>

Co-authored-by: Eric Harper <[email protected]>

nemo/collections/tts/torch/g2ps.py

@@ -405,7 +405,7 @@ def parse_one_word(self, word: str):
         ):
             if word[-3] == 'T':
                 # Case like "airport's"
-                return self.phoneme_dict[word[:-2]][0] + ["t", "s"], True
+                return self.phoneme_dict[word[:-2]][0] + ["s"], True
             elif word[-3] == 'S':
                 # Case like "jones's"
                 return self.phoneme_dict[word[:-2]][0] + ["ɪ", "z"], True
@@ -420,14 +420,11 @@ def parse_one_word(self, word: str):
             and (word[:-1] in self.phoneme_dict)
             and (not self.ignore_ambiguous_words or self.is_unique_in_phoneme_dict(word[:-1]))
         ):
-            if word[-3] == 'T':
-                # Case like "airport's"
-                return self.phoneme_dict[word[:-2]][0] + ["t", "s"], True
-            elif word[-3] == 'S':
-                # Case like "jones's"
-                return self.phoneme_dict[word[:-2]][0] + ["ɪ", "z"], True
+            if word[-2] == 'T':
+                # Case like "airports"
+                return self.phoneme_dict[word[:-1]][0] + ["s"], True
             else:
-                return self.phoneme_dict[word[:-2]][0] + ["z"], True
+                return self.phoneme_dict[word[:-1]][0] + ["z"], True
 
         # Phoneme dict lookup for unique words (or default pron if ignore_ambiguous_words=False)
         if word in self.phoneme_dict and (not self.ignore_ambiguous_words or self.is_unique_in_phoneme_dict(word)):