docs: frame F1 97.4% vs FunASR

README.md

@@ -37,8 +37,14 @@ waveform → [Preprocessor fp32/CPU] → features [1,T,400]
   `max_start_silence_time` (3000 ms), `max_single_segment_time` (60 s),
   `sil_to_speech_time_thres` (150 ms). See `vad_config.json`.
 
-Parity: preprocessor matches FunASR `WavFrontendOnline` to max|Δ|≈3e-5; FSMN scorer
-torch↔CoreML max|Δ| 0.0016.
+## Benchmark — fidelity vs FunASR (FLEURS zh, n=50)
+
+| Metric | Value |
+|--------|-------|
+| **Frame F1** | **97.4%** (P 100.0% / R 94.8%) |
+| Median RTFx | 1209x |
+
+Parity: preprocessor matches `WavFrontendOnline` max|Δ|≈3e-5; FSMN scorer max|Δ| 0.0016. Boundaries match FunASR within ~50 ms.
 
 ## License