【Fix Speech Issue No.8】issue 3652 merge_yi function has a bug

paddlespeech/t2s/frontend/tone_sandhi.py

@@ -237,31 +237,26 @@ class ToneSandhi():
     # output seg: [['听一听', 'v']]
     def _merge_yi(self, seg: List[Tuple[str, str]]) -> List[Tuple[str, str]]:
         new_seg = []
-        # function 1
+    skip_next = False
-        for i, (word, pos) in enumerate(seg):
+    # function 1
-            if i - 1 >= 0 and word == "一" and i + 1 < len(seg) and seg[i - 1][
+    for i, (word, pos) in enumerate(seg):
-                    0] == seg[i + 1][0] and seg[i - 1][1] == "v":
+        if skip_next:
-                if i - 1 < len(new_seg):
+            skip_next = False
-                    new_seg[i -
+            continue
-                            1][0] = new_seg[i - 1][0] + "一" + new_seg[i - 1][0]
+        if i - 1 >= 0 and word == "一" and i + 1 < len(seg) and seg[i - 1][0] == seg[i + 1][0] and seg[i - 1][1] == "v":
-                else:
+            new_seg[-1] = (new_seg[-1][0] + "一" + seg[i + 1][0], new_seg[-1][1])
-                    new_seg.append([word, pos])
+            skip_next = True
-                    new_seg.append([seg[i + 1][0], pos])
+        else:
-            else:
+            new_seg.append((word, pos))
-                if i - 2 >= 0 and seg[i - 1][0] == "一" and seg[i - 2][
+    seg = new_seg
-                        0] == word and pos == "v":
+    new_seg = []
-                    continue
+    # function 2
-                else:
+    for i, (word, pos) in enumerate(seg):
-                    new_seg.append([word, pos])
+        if new_seg and new_seg[-1][0] == "一":
-        seg = new_seg
+            new_seg[-1] = (new_seg[-1][0] + word, new_seg[-1][1])
-        new_seg = []
+        else:
-        # function 2
+            new_seg.append((word, pos))
-        for i, (word, pos) in enumerate(seg):
+    return new_seg
-            if new_seg and new_seg[-1][0] == "一":
-                new_seg[-1][0] = new_seg[-1][0] + word
-            else:
-                new_seg.append([word, pos])
-        return new_seg
 
     # the first and the second words are all_tone_three
     def _merge_continuous_three_tones(