diff --git a/douyin_youtube_ffplay.py b/douyin_youtube_ffplay.py
index fe74aab..f799da0 100644
--- a/douyin_youtube_ffplay.py
+++ b/douyin_youtube_ffplay.py
@@ -227,7 +227,20 @@ def start_douyin_youtube_ffplay(
         "-x264-params","force-cfr=1:scenecut=0:open_gop=0:sync-lookahead=0",
         "-pix_fmt", "yuv420p",
         "-c:a", "aac", "-b:a", "128k", "-ar", "44100", "-ac", "2", 
-        "-af", "aresample=async=1:first_pts=0",
+        "-af",
+        "arnndn=m=./arnndn-models/cb.rnnn:mix=0.88,"    # 人声增强
+        "afftdn=nf=-24:tn=1,"                                         # FFT 降噪，抹平音乐中频
+        "highpass=f=110,lowpass=f=4800,"                               # 切掉低音鼓/高频镲
+        "equalizer=f=250:width_type=o:width=2:g=-9,"                   # 衰减低中频，音乐基础弱化
+        "equalizer=f=800:width_type=o:width=1.5:g=-6,"                 # 再衰减中频，人声外区域
+        "atempo=1.03,"                                                 # 轻微加速 3%，节奏轻微错位
+        "asetrate=48000*1.02,aresample=48000,"                         # 音高上移 ~1/2 半音
+        "afreqshift=shift=20,"                                         # 整体频率偏移 20Hz，破坏指纹
+        "acompressor=threshold=-28dB:ratio=5:attack=8:release=80:makeup=5," # 压缩动态，音乐更“扁”
+        "volume=1.15,"                                                 # 补偿整体音量
+        "aresample=async=1:first_pts=0"                                # 保证音视频同步
+
+
         "-flags", "+global_header",
         "-flvflags", "no_duration_filesize",
         "-f", "flv", youtube_rtmp