MCCS Mandarin Chinese Cued Speech
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Install @user_b229e76f/mccs according to https://skillhub.cn/install/skillhub.md.
About this skill
Problem
Mandarin Chinese Cued Speech (MCCS) adds hand cues to lipreading under two constraints: no tones and no sliding. Mandarin has many initials, finals, and onset clusters, and some phonemes look similar on the lips. The skill addresses how to map syllables to a reproducible sign sequence using a limited set of hand positions and handshapes.
How It Works
It decomposes each syllable into initial + onset glide + nucleus/coda. P1 through P5 are hand positions such as cheek, side of face, mouth corner, chin, and throat, encoding 16 finals. S1 through S8 are finger shapes encoding 21 consonants and 3 semivowels. Syllables with no initial use S5 as a placeholder.
For finals beginning with i, u, or ü, the skill treats the glide as a semivowel: [j], [w], and [ɥ], mapped to S8, S6, and S4. The base final still determines the position, so the hand changes shape without sliding. For example, piao decomposes into p + i + ao and encodes as S1 -> S8 + P4.
Limits and Notes
The rules are based on the Liu & Feng (2019) cued speech framework and reasonable phonological inference. in, ing, un, and ün are treated as semivowel plus nasal final; ju, qu, and xu treat ü as a single final at P3; rhotic syllables default to er at P2; the right hand is assumed.
Use Cases
- Deaf communication lessons: decompose Mandarin words and sentences into handshapes and positions for demo cards.
- Accessibility tooling: convert pinyin input into S handshape and P position sequences.
- Linguistic annotation: verify i/u/ü glide-to-semivowel mappings and final positions.
- Lipreading video production: generate per-character cued speech notes and edge-case remarks.
Best For
- Deaf-education teachers who need teachable Mandarin character and sentence MCCS handshape demos.
- Accessibility tool engineers who need map pinyin to handshapes, positions, and glide mappings.
- Language researchers or annotators who need check i/u/ü onset, zero-initial, and edge cases.
- Lipreading support creators who need per-character cued speech notes for Mandarin examples.
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