fix: homophones replacer (#386)

and improve output clarity

- 原代码在应用字符映射后错误地使用了变量t而不是text[i],会导致前一步 apply_character_map 的结果被覆盖。现已更正此问题。
- 同音字替换的输出已改进为仅显示替换的字符，使结果更简洁。

Author: 6drf21e

ChatTTS/core.py

@@ -179,9 +179,10 @@ def _infer(
                 self.logger.log(logging.WARNING, f'Invalid characters found! : {invalid_characters}')
                 text[i] = apply_character_map(t)
             if do_homophone_replacement and self.init_homophones_replacer():
-                text[i] = self.homophones_replacer.replace(t)
-                if t != text[i]:
-                    self.logger.log(logging.INFO, f'Homophones replace: {t} -> {text[i]}')
+                text[i], replaced_words = self.homophones_replacer.replace(text[i])
+                if replaced_words:
+                    repl_res = ', '.join([f'{_[0]}->{_[1]}' for _ in replaced_words])
+                    self.logger.log(logging.INFO, f'Homophones replace: {repl_res}')
 
         if not skip_refine_text:
             text_tokens = refine_text(

ChatTTS/utils/infer_utils.py

@@ -76,12 +76,15 @@ def load_homophones_map(self, map_file_path):
 
     def replace(self, text):
         result = []
+        replaced_words = []
         for char in text:
             if char in self.homophones_map:
-                result.append(self.homophones_map[char])
+                repl_char = self.homophones_map[char]
+                result.append(repl_char)
+                replaced_words.append((char, repl_char))
             else:
                 result.append(char)
-        return ''.join(result)
+        return ''.join(result), replaced_words
 
 def count_invalid_characters(s):