From 6757cec50b93708bc06d8e7c4b2171bb91d0635e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=BC=A0=E6=98=A5=E4=B9=94?=
 <83450930+Liyulingyue@users.noreply.github.com>
Date: Tue, 21 Jan 2025 22:26:35 +0800
Subject: [PATCH] Update tone_sandhi.py

---
 paddlespeech/t2s/frontend/tone_sandhi.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/paddlespeech/t2s/frontend/tone_sandhi.py b/paddlespeech/t2s/frontend/tone_sandhi.py
index ec1b61302..bc021d5aa 100644
--- a/paddlespeech/t2s/frontend/tone_sandhi.py
+++ b/paddlespeech/t2s/frontend/tone_sandhi.py
@@ -268,7 +268,7 @@ class ToneSandhi():
         for (word, pos) in seg:
             orig_finals = lazy_pinyin(
                 word, neutral_tone_with_five=True, style=Style.FINALS_TONE3)
-            # after pypinyin==0.41.0, 嗯 will be processed as "", so we need to change it to "n2"
+            # after pypinyin==0.44.0, '嗯' need to be n2, cause the initial and final consonants cannot be empty at the same time
             en_index = [index for index, c in enumerate(word) if c == "嗯"]
             for i in en_index:
                 orig_finals[i] = "n2"