MiMo TTS Lowering

Version: 0.1-draft

MiMo VoiceDesign is an expressive spoken-output target for Weksa interlingua lowering. It is not the source of meaning, language choice, character state, or delivery truth.

interlingua packet
  -> projected speaker-local context
  -> target-language utterance realization
  -> Weksa delivery intent from the same projection
  -> MiMo TTS VoiceDesign request projection
  -> rendered audio artifact

MiMo sits beside written output and AquaSynth handoffs. Written realizations prove that meaning, register, and cultural ontology survived lowering. AquaSynth handoffs train or drive GameCult-owned synthesis. MiMo VoiceDesign requests let an external provider speak a Weksa-authored utterance with a generated voice derived from the same projected Persona state, delivery controls, and trace that produced the utterance.

The MiMo pass is choreography and provider flavor. It is not a second Persona projection pass and it does not re-interpret raw Persona state after the line has already been lowered.

Authority

Weksa owns:

target-language spoken text selected from interlingua
target-language register, script, cultural ontology, and trace
projected speaker-local context used for the utterance
speaker-local delivery pressure derived during utterance lowering
provider-neutral prosody and emphasis intent
the MiMo request projection as an export artifact

MiMo owns:

generation of a provider voice from the requested voice design description
interpretation of MiMo natural-language voice/style guidance
interpretation of MiMo inline audio/style tags
rendered audio bytes or streaming audio chunks

MiMo does not own:

source meaning
target-language cultural ontology
canonical speaker or Persona state
fresh Persona-state interpretation
Weksa pronunciation plans
AquaSynth learned embeddings, synth controls, or audio truth

Projection Rule

The MiMo request must be derived from an accepted target-language realization and the same projected speaker-local context that created it. It must not lower directly from English unless English is the selected target language for that realization. It must not read raw Persona state to discover a different voice after Weksa has already chosen the utterance.

Natural-language voice design and style guidance belongs in the MiMo user message. The spoken target-language text belongs in the MiMo assistant message. Inline MiMo tags may appear in the assistant content only when they are derived from Weksa delivery intent or explicit target-language realization notes.

Request Shape

schema_version: weksa.mimo_tts_request.v0
source_realization_ref:
speaker_agent_id:
provider:
  id: xiaomi-mimo
  model: mimo-v2.5-tts-voicedesign
target_language:
  code:
  locale:
  script:
  register:
performance_register:
  label:
  medium:
  delivery_archetype:
voice_design:
  description:
  source_controls:
  projected_context_refs:
  forbidden_traits:
messages:
  user_voice_design_instruction:
  assistant_spoken_content:
audio:
  format:
  optimize_text_preview:
  streaming:
trace:
  source_fields:
  delivery_controls_used:
  provider_tags_used:
  uncertainties:

Delivery Mapping

target_language.register is the linguistic/social register of the accepted realization. It is not a provider style knob. For MiMo, Weksa should derive an explicit performance_register from the same projection so speech choreography can say "anime visual-novel heroine warning" without pretending English itself has that register.

Weksa should map the utterance's existing projected Persona pressure into provider-neutral delivery labels before emitting MiMo-specific instructions:

pace, pause pressure, and urgency
pitch contour and pitch range
loudness and attack
articulation precision
warmth, threat, tenderness, contempt, play, fatigue, secrecy, formality
span-level emphasis and pauses

The MiMo projection may turn those labels into a concise VoiceDesign prompt or inline tags, but the trace must preserve the Weksa-owned source controls.

Persona presentation details such as youth-coded, loli-coded, product-voice, or other culturally loaded styling may enter the MiMo request only when they are already present in the projected context or accepted delivery intent. They should be described as presentation/cultural coding and kept subordinate to agency, personality, affect, and scene purpose. They must not become sexualized content or a generic anime voice pasted over the line.

For Weksa-authored dialogue, optimize_text_preview should normally be false or omitted. MiMo should speak the accepted target-language realization, not rewrite it. Text polishing is only allowed for explicit preview/prototyping passes that are marked non-authoritative.

Language Rule

Weksa should be able to write and speak in any target language whose utterance realization it can justify. MiMo output for Brazilian Portuguese should consume the accepted pt-BR spoken text. Japanese output should consume accepted Japanese text. Alien-language output should consume accepted alien rendered speech or phonetic text only after the language project owns that surface.

Backtranslations are reviewer aids. They must not become MiMo spoken content.

First Proof

The first proof should use the Nibu warning packet already used by multilingual lowering:

emit the accepted English, pt-BR, or Japanese realization
derive a provider-neutral delivery intent from Nibu's projected context
project that into a MiMo mimo-v2.5-tts-voicedesign request
verify that the request speaks the target text, not the backtranslation
verify that style guidance is traceable to Weksa delivery controls

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