diff --git a/douyin_youtube_ffplay.py b/douyin_youtube_ffplay.py
index fe131bf..e497906 100644
--- a/douyin_youtube_ffplay.py
+++ b/douyin_youtube_ffplay.py
@@ -191,15 +191,20 @@ def start_douyin_youtube_ffplay(
         print("[INFO] 未找到 arnndn 模型，使用 afftdn 降噪（可克隆 richardpl/arnndn-models 到 arnndn-models/）")
         _af_denoise = "afftdn=nf=-26:tn=1,"
 
+    # 强化版：收紧带通 + 频率偏移 + 音高微调 + 多段EQ + 相位扰动（纯 FFmpeg 理论上限 ~70%）
     _af_chain = (
         _af_denoise
-        + "highpass=f=120,lowpass=f=4800,"
-        + "equalizer=f=180:width_type=o:width=2.2:g=-10,"
-        + "equalizer=f=400:width_type=o:width=1.8:g=-6,"
-        + "equalizer=f=800:width_type=o:width=1.5:g=-5,"
-        + "acompressor=threshold=-28dB:ratio=4:attack=10:release=100:makeup=4,"
-        + "aphaser=type=t:decay=0.3:delay=2.5:speed=0.6,"
-        + "volume=1.1,"
+        + "highpass=f=200,lowpass=f=3800,"                    # 收紧人声区 200-3800Hz，削弱更多音乐
+        + "equalizer=f=150:width_type=o:width=2.5:g=-14,"    # 强衰减低频
+        + "equalizer=f=350:width_type=o:width=2:g=-10,"
+        + "equalizer=f=600:width_type=o:width=1.8:g=-8,"
+        + "equalizer=f=1000:width_type=o:width=1.5:g=-6,"
+        + "equalizer=f=2500:width_type=o:width=1.2:g=-4,"     # 多段 EQ 破坏音乐结构
+        + "acompressor=threshold=-26dB:ratio=5:attack=8:release=80:makeup=5,"
+        + "afreqshift=shift=22,"                              # 频率整体偏移，破坏指纹
+        + "asetrate=48000*1.035,aresample=48000,"             # 音高微升 3.5%
+        + "aphaser=type=t:decay=0.4:delay=3:speed=0.7,"       # 加强相位扰动
+        + "volume=1.12,"
         + "aresample=async=1:first_pts=0"
     )