diff --git a/douyin_youtube_ffplay.py b/douyin_youtube_ffplay.py
index f63551f..f528b7a 100644
--- a/douyin_youtube_ffplay.py
+++ b/douyin_youtube_ffplay.py
@@ -196,7 +196,8 @@ def start_douyin_youtube_ffplay(
 
   
 
-# 720p-处理背景音（低 CPU + Content ID 防护优化版）
+
+# 720p-低CPU + 背景音乐处理 + 防ContentID
     ffmpeg_command = [
         "ffmpeg", "-y", "-loglevel", "info", "-nostdin", "-re",
         "-stats", "-stats_period", "1",
@@ -218,29 +219,30 @@ def start_douyin_youtube_ffplay(
         "pad=720:1280:(ow-iw)/2:(oh-ih)/2:black",
 
         "-c:v", "libx264",
-        "-preset", "veryfast",              # 降低 CPU 压力
+        "-preset", "veryfast",               # 降低CPU
         "-profile:v", "high",
         "-b:v", "2600k", "-maxrate", "3000k", "-bufsize", "5200k",
         "-vsync", "cfr",
-        "-g", "50", "-keyint_min", "50",    # 与 fps=25 对应
+        "-g", "50", "-keyint_min", "50",     # 与fps=25匹配
         "-r", "25",
         "-bf", "0",
         "-sc_threshold", "0",
         "-x264-params", "force-cfr=1:scenecut=0:open_gop=0:sync-lookahead=0",
         "-pix_fmt", "yuv420p",
 
-        # 音频处理（轻量版 + 防 Content ID）
+        # 音频处理（轻量 + 背景音乐弱化 + 防Content ID）
         "-c:a", "aac", "-b:a", "128k", "-ar", "48000", "-ac", "2",
         "-af",
-        "afftdn=nf=-28:tn=1,"                     # 轻 FFT 降噪
-        "highpass=f=120,lowpass=f=5000,"          # 切低频鼓 & 高频镲
-        "equalizer=f=250:width_type=o:width=2:g=-6,"  # 音乐低频基础
-        "equalizer=f=900:width_type=o:width=1.2:g=-4,"# 音乐旋律区轻弱化
-        "acompressor=threshold=-32dB:ratio=3.5:attack=12:release=150:makeup=3," # 压动态
-        "asetrate=48000*1.02,aresample=48000,"    # 音高上移 1/2 半音
-        "afreqshift=shift=15,"                     # 小幅频率偏移
-        "volume=1.05,"                             # 音量补偿
-        "aresample=async=1:first_pts=0",          # 保证音视频同步
+        "arnndn=m=./arnndn-models/cb.rnnn:mix=0.85,"      # 人声增强
+        "afftdn=nf=-28:tn=1,"                             # 轻 FFT 降噪，背景弱化
+        "highpass=f=120,lowpass=f=4800,"                  # 切低频鼓 & 高频镲
+        "equalizer=f=250:width_type=o:width=2:g=-8,"      # 衰减低中频
+        "equalizer=f=800:width_type=o:width=1.5:g=-5,"    # 衰减中频
+        "acompressor=threshold=-30dB:ratio=4:attack=10:release=100:makeup=4," # 压动态
+        "asetrate=48000*1.02,aresample=48000,"           # 音高微升
+        "afreqshift=shift=15,"                            # 小幅频率偏移
+        "volume=1.1,"                                     # 音量补偿
+        "aresample=async=1:first_pts=0",                 # 音视频同步
 
         # 推流参数
         "-flvflags", "no_duration_filesize",
@@ -251,6 +253,7 @@ def start_douyin_youtube_ffplay(
 
 
 
+
     # 1080p
     # ffmpeg_command = [
     # "ffmpeg", "-y", "-loglevel", "info", "-nostdin", "-re",