기준 v2-yumin-female-mid.wav · pcm_s16le 24000Hz mono · 147840샘플 = 6.160s
[exact] graph-loaded(18) (h3_r2v_passthru-yumin-loaded_00001.flac · flac)
    147840샘플 = 6.160s · max|Δ|=0.000000e+00 · RMS Δ=0.000000e+00
    r(zero-lag)=1.000000 · r(best-lag)=1.000000 @ lag=0
    → 샘플 동일성 ✅ 통과
[lossy] passthru-mp4(17) (h3_r2v_passthru-yumin-passthru_00001_.mp4 · aac)
    148480샘플 = 6.187s · max|Δ|=1.084371e-01 · RMS Δ=6.395183e-03
    r(zero-lag)=0.998481 · r(best-lag)=0.998481 @ lag=0 · 꼬리 0.027s peak=0.00000
[lossy] generated-mp4(15) (h3_r2v_passthru-yumin_00001_.mp4 · aac)
    158208샘플 = 6.592s · max|Δ|=1.246944e+00 · RMS Δ=2.601034e-01
    r(zero-lag)=-0.049534 · r(best-lag)=-0.162387 @ lag=2589 · 꼬리 0.432s peak=0.85974 ⚠원본 32000Hz→리샘플(동일성 판정 무효)
[lossy] generated-flac(19) (h3_r2v_passthru-yumin-generated_00001.flac · flac)
    157800샘플 = 6.575s · max|Δ|=1.240274e+00 · RMS Δ=2.610529e-01
    r(zero-lag)=-0.048725 · r(best-lag)=-0.162339 @ lag=2590 · 꼬리 0.415s peak=0.86332 ⚠원본 32000Hz→리샘플(동일성 판정 무효)