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open-standards/wai/audio-conformance/README.md
Transaction Science 3fac029a71 wai: every corpus states the provenance of its content 
Each *-conformance/README.md now has a line that begins **Provenance.**:
the generator that writes the corpus and its input, and for an input not
generated here its source and licence. OER/2's corpus is settled and left
as it is. byte-exact-conformance and quantum-ops-conformance get a README.
wai-rs/tests/vectors/README.md gives a row per vector directory. Where the
staged-delivery, staged-measurement and telemetry READMEs called their
content "synthetic", that sentence is now their provenance line.

Two vectors are recorded as not generated, from the provenance audit:
int_video's video_real (a pan over a third-party picture) and
neural-conformance's photo (a third-party picture, with a decoder trained on
unrecorded images). Their lines say so and that they are to be replaced;
the photo bullet no longer names the picture's source product.

tests/corpus_provenance.rs requires the line in every corpus and a row for
every vector directory; CI runs it with the carriage tests. CONTRIBUTING
states the rule: corpus content is generated here, or recorded with a
licence that permits redistribution, and a word like "synthetic" is not a
provenance line.

Co-Authored-By: Claude Opus 5.5 <[email protected]>
2026-10-07 10:09:21 -04:00

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Spatial-Audio Conformance Corpus

Vectors for the spatial-audio extension's mixdown-equivalence criterion: given the same wai.audio.scene and the same declared output layout, a conforming sink MUST produce the identical canonical PCM, hence the identical BLAKE3 — on every machine, no tolerance parameter. The audio counterpart of replay-equivalence.

Provenance. Generated here: wai_audio_vectors gen writes every scene and its sources, square-wave tones built in code. No recording.

All vectors mix to the mandatory stereo floor under the wai.det.fixed64 numeric profile, wai.audio.pan.sqrt_constpower pan, wai.audio.dist.inverse_clamped distance. Sources are deterministic synthetic tones (no clock, no entropy); in a real sink they'd be decoded wai.audio.* assets — the corpus provides the decoded mono PCM so each vector isolates the one new thing, the deterministic mixdown.

Layout

  • vectors/<name>.wscn — the scene container (contract + object table + asset table).
  • vectors/<name>.sources.bin — the decoded mono sources: n u32 | n × (hash[32], len u32, i16le[len]), sources in hash order.
  • expected_hashes.json — per scene: scene_hash, layout, and the expected mixdown_hash.

Vectors:

  • stereo_pair — two static sources, hard-left + hard-right.
  • distance — one source placed near vs. far (inverse-clamped atten).
  • moving — a source whose keyframed trajectory sweeps left→right.

Running

cd ../wai-rs
cargo run --features audio_scene --bin wai_audio_vectors -- verify ../audio-conformance
cargo run --features audio_scene --bin wai_audio_vectors -- gen    ../audio-conformance   # regenerate

Pass = hash equality. A failed vector is a conformance failure of the file or the sink — report it failed, never approximately right.