add special tone modifed case, test=tts

paddlespeech/t2s/frontend/tone_sandhi.py

@@ -84,7 +84,9 @@ class ToneSandhi():
             if j - 1 >= 0 and item == word[j - 1] and pos[0] in {"n", "v", "a"}:
                 finals[j] = finals[j][:-1] + "5"
         ge_idx = word.find("个")
-        if (len(word) > 1 and word[-1] in "吧呢啊呐噻嘛吖嗨呐哦哒滴哩哟喽啰耶喔诶") or (len(word)>1 and word[-2] in '好是帅酷棒衰烂臭狗糗') or (len(word)==1 and word[-1] in "额嗯"):
+        if (len(word) > 1 and word[-1] in "吧呢啊呐噻嘛吖嗨呐哦哒滴哩哟喽啰耶喔诶") or (
+                len(word) > 1 and word[-2] in '好是帅酷棒衰烂臭狗糗' and word[-1]=='额') or (
+                    len(word) == 1 and word[-1] in "额嗯"):
             finals[-1] = finals[-1][:-1] + "5"
         elif len(word) >= 1 and word[-1] in "的地得":
             finals[-1] = finals[-1][:-1] + "5"
@@ -347,7 +349,7 @@ class ToneSandhi():
 
     def modified_tone(self, word: str, pos: str,
                       finals: List[str]) -> List[str]:
-        
+
         finals = self._bu_sandhi(word, finals)
         finals = self._yi_sandhi(word, finals)
         finals = self._neural_sandhi(word, pos, finals)