{
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      "output": "/srv/music-files-platform-next/pipeline/batch-20260512-163153-86c558/07_I Can't Love You Anymore_Roof_Caved_In_20260512/suno_mixed_0.mp3",
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        "low_pct": 58.0,
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      "reasons": [
        "🎯 参考曲匹配模式",
        "   输入: Low=60% Mid=34% High=6% W=11.1% Crest=13.8",
        "   目标: Low=54% Mid=44% High=3% W=19.9% Crest=10.7",
        "   差值: ΔLow=+6% ΔMid=-9% ΔHigh=+3% ΔW=-8.8% ΔCrest=+3.1",
        "   低频偏多+6%: 去闷=-0.6dB, 低频增强=0.7dB, 收紧=-0.7dB",
        "   高频偏多+3%: 空气感=-0.0dB",
        "   LowMid接近目标(Δ+0%) → 不调",
        "   Mid偏少-9%: 2.5kHz=+0.3dB q=1.0",
        "   Air偏多+2.3%: 空气感再降0.2dB→-0.2dB",
        "   宽度偏窄-8.8%: Side=+1.1dB",
        "   动态偏大+3.1dB: 压缩阈值=-9.9dB, PC mix=13%"
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        "confidence": "medium",
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        "onset_density": 2.7,
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          "air": 1.0
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    {
      "input": "/srv/music-files-platform-next/pipeline/batch-20260512-163153-86c558/07_I Can't Love You Anymore_Roof_Caved_In_20260512/suno_raw_1.mp3",
      "output": "/srv/music-files-platform-next/pipeline/batch-20260512-163153-86c558/07_I Can't Love You Anymore_Roof_Caved_In_20260512/suno_mixed_1.mp3",
      "before": {
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        "low_pct": 63.0,
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        "high_pct": 5.300000190734863,
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          "mid": 7.400000095367432,
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        "low_pct": 60.79999923706055,
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        "high_pct": 6.0,
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        "side_high_shelf_hz": 10000,
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        "mid_peak_db": 0.5,
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        "parallel_comp_attack_ms": 5,
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        "pre_gain_db": -1.5,
        "hp_hz": 30,
        "dull_hz": 300,
        "dull_db": -0.9299999475479126,
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        "sub_shelf_hz": 80,
        "sub_shelf_db": 0.5350000262260437,
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        "tight_db": -0.7789999842643738,
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        "air_hz": 16000,
        "air_db": 0.03999999165534973,
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        "comp_ratio": 2.0,
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        "comp_release_ms": 100,
        "limiter_threshold_db": -1.0,
        "limiter_release_ms": 100,
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        "_global_low": 63.0,
        "_global_mid": 31.700000762939453,
        "_global_high": 5.300000190734863
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      "reasons": [
        "🎯 参考曲匹配模式",
        "   输入: Low=63% Mid=32% High=5% W=12.4% Crest=13.8",
        "   目标: Low=54% Mid=44% High=3% W=19.9% Crest=10.7",
        "   差值: ΔLow=+9% ΔMid=-12% ΔHigh=+3% ΔW=-7.5% ΔCrest=+3.1",
        "   低频偏多+9%: 去闷=-0.9dB, 低频增强=0.5dB, 收紧=-0.8dB",
        "   高频偏多+3%: 空气感=0.0dB",
        "   LowMid接近目标(Δ-2%) → 不调",
        "   Mid偏少-9%: 2.5kHz=+0.3dB q=1.0",
        "   宽度偏窄-7.5%: Side=+0.9dB",
        "   动态偏大+3.1dB: 压缩阈值=-9.9dB, PC mix=13%"
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        "confidence": "medium",
        "source": "audio",
        "bpm": 123.0,
        "centroid": 2683.0,
        "onset_density": 2.4,
        "low_energy": 46.20000076293945
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        "peak": 1.0,
        "rms": -9.699999809265137,
        "crest": 10.699999809265137,
        "width": 19.899999618530273,
        "low_pct": 53.70000076293945,
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        "high_pct": 2.700000047683716,
        "centroid": 726.0,
        "bands": {
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          "bass": 38.20000076293945,
          "low_mid": 26.799999237060547,
          "mid": 16.700000762939453,
          "high_mid": 1.7000000476837158,
          "air": 1.0
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  "time": 36.5
}