diff --git a/douyin_youtube_ffplay.py b/douyin_youtube_ffplay.py
index a983669..70e2465 100644
--- a/douyin_youtube_ffplay.py
+++ b/douyin_youtube_ffplay.py
@@ -231,6 +231,7 @@ def start_douyin_youtube_ffplay(
         "-pix_fmt", "yuv420p",
 
         # 音频处理（轻量 + 背景音乐弱化 + 防Content ID）
+        "arnndn=m=./arnndn-models/cb.rnnn:mix=0.85,"      # 人声增强
         "-c:a", "aac", "-b:a", "128k", "-ar", "48000", "-ac", "2",
         "-af",
         "afftdn=nf=-28:tn=1,"                             # 轻 FFT 降噪，背景弱化