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ely-eye/bench/reports/ASR.md
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ZacharyZhang-NY 836a4908e1 Freeze the ASR report against the commit that carries the code
Generated by .venv/bin/python -m bench.asr_check after 709104e, so the stamp
names the code under measurement instead of its parent. Two passes agreed:
WER 0.242 both times, transcripts byte-identical.
2026-10-07 22:24:56 -04:00

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ASR: what the speech reader hears (commit 709104e80)

  • generated 2026-10-08T02:24:47+00:00
  • model: Systran/faster-whisper-tiny (cpu int8, 4 threads), model.bin sha256 dcb76c6586fc06cb…
  • decode: word_timestamps=True, beam_size=1, temperature=(0.0,), condition_on_previous_text=False, vad_filter=False
  • reference: Video-MME community subtitles: third-party captions, not verbatim transcripts
  • machine: {'system': 'Linux', 'release': '6.18.40.1-microsoft-standard-WSL2', 'cpus': 32, 'threads_per_query': 4, 'load_average_1_5_15': [9.65, 2.54, 0.88]}
video audio s transcribe s ×realtime reference words words WER mean word confidence
0IdYJGBmguM 88.93 1.39 63.9 201 219 0.229 0.861
1q-5IIyZL20 109.18 1.33 82.4 296 313 0.253 0.821
1tidNDIpKSY 60.07 0.54 112.2 36 31 0.222 0.852

Over 3 videos and 258.18 seconds of audio: word error rate 0.242 over 533 reference words (563 words heard), transcribed in 3.26 seconds.

Repeating the pass on the same machine gave WER 0.242 then 0.242; the transcripts were byte-identical. Decoding is greedy with no retry ladder, so a rerun is the same answer, not a new draw.

Ingested through the product path, the store holds 80 audio atoms from 3 sources carrying 563 word timestamps (0 out of order, 0 before their own segment) out of 133 atoms in total.

The captions are not a transcript, so this WER is not a bound in either direction: a caption that drops words also hides words the model dropped. The third row has only 36 reference words, where one word moves its rate by several points — read the denominators, not the decimals.