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Add vocal tract boundary contracts

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Meta Vens 2026-05-19 14:54:27 +01:00
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docs/ipa-vocal-tract-roadmap.md
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@ -18,6 +18,24 @@ The target user feeds Weksa text as IPA or IPA-like phonetic strings. AquaSynth
keeps the real authority below that surface: phonetic features, gestures,
anatomy, excitation, and acoustic simulation.
## Boundary Bones
Three handoffs must stay visible in code, docs, tests, and host reports:
1. `PhoneticIntent` is the inspectable Weksa-to-AquaSynth contract. It carries
IPA tokens, feature bundles, timing, and prosody. It does not know tract
section areas or Faust.
2. `ArticulatoryPlan` is the AquaSynth-owned realization layer. It carries
gestures and tract targets after morphology constraints have had a chance to
bite. It does not pretend an impossible phone was rendered honestly.
3. `ArticulatoryConstraintReport` is the host-visible failure surface. If a
morphology cannot form a requested articulation, the report names the phone,
source event, missing capability, and severity.
Those records are the first defense against liar-slurry: no parser, planner,
renderer, or host should need to infer whether IPA intent, physical anatomy, or
DSP output owns a decision.
## Objective
Build a research-grounded vocal-tract instrument for human and alien speech: