buchwandler

Thai frontend provenance

Clean-room statement

The Thai frontend is an independent implementation for kokorog2p. The pinned Wayu repository is used only as an externally observed behavioral oracle. No Wayu implementation source, comments, regular expressions, control flow, model weights, generated name tables, evaluation corpus, or serving code is copied or vendored.

Behavioral baseline

  • Reference: kunato/wayu-kokoro-thai-v1

  • Behavioral baseline commit: 50d7f60e41ac118e5bb92b0ba52c30bb7830103c

  • Later tree commits may be used only for packaging context, not as the behavioral baseline.

  • Target vocabulary fact: Wayu uses ˩ (U+02E9 MODIFIER LETTER EXTRA-LOW TONE BAR) at token ID 7.

Dependencies and licenses

  • Lexphon provides the provisioned th:lexhint-native pronunciation dictionary. The asset is installed and verified outside this package and is not downloaded at runtime.

  • The Wayu model repository is Apache-2.0 licensed. This implementation does not redistribute its weights or source.

Deliberate deviations

  • Latin runs use the existing kokorog2p.en.EnglishG2P lazily instead of a direct Misaki English dependency.

  • No external Thai runtime engine or generated Thai-name respelling database is included.

  • No generated Thai-name respelling database, license-plate acrophony, or model-training entity patch table is included.

  • Thai semantic normalization remains local to this package until a released spokenform version advertises the required Thai semantics.

Fixture policy

Tests and benchmark cases are independently authored synthetic or reviewed cases. Expected Thai pronunciation may be recorded from the released LexHint data, the observed reference, or human review. Reference checkouts and network access are development-only inputs and are not runtime or normal CI dependencies.