| { | |
| "substitutions": { | |
| "/s/→/θ/": "Lisp - Use tongue tip placement behind upper teeth. Practice /s/ in isolation, then in words. Use mirror feedback to ensure tongue is not protruding.", | |
| "/s/→/ʃ/": "Sibilant confusion - Practice /s/ vs /sh/ distinction. Focus on tongue position: /s/ has tongue tip up, /sh/ has tongue body back.", | |
| "/s/→/z/": "Voicing error - Practice voiceless /s/ vs voiced /z/. Place hand on throat to feel vibration difference.", | |
| "/r/→/w/": "Rhotacism - Practice tongue position: curl tongue back, avoid lip rounding. Start with /r/ in isolation, then CV syllables (ra, re, ri, ro, ru).", | |
| "/r/→/l/": "Rhotacism - Focus on tongue tip position vs. tongue body placement. /r/ uses tongue body, /l/ uses tongue tip.", | |
| "/r/→/ɹ/": "Rhotacism variant - Practice standard /r/ production with proper tongue curl.", | |
| "/l/→/w/": "Liquid substitution - Practice lateral tongue placement with tongue tip up to alveolar ridge.", | |
| "/l/→/j/": "Liquid substitution - Focus on tongue tip contact for /l/ vs. tongue body for /j/.", | |
| "/k/→/t/": "Velar to alveolar substitution - Practice back tongue placement for /k/. Use mirror to see tongue position.", | |
| "/k/→/p/": "Velar to bilabial substitution - Practice velar placement: tongue back, soft palate contact.", | |
| "/g/→/d/": "Velar to alveolar substitution - Practice voiced velar /g/ with tongue back position.", | |
| "/g/→/b/": "Velar to bilabial substitution - Practice velar placement for /g/.", | |
| "/θ/→/f/": "Th-fronting - Practice tongue tip placement between teeth for /θ/. Use mirror to ensure correct position.", | |
| "/θ/→/s/": "Th-fronting - Practice interdental placement for /θ/ vs. alveolar /s/.", | |
| "/ð/→/v/": "Voiced th-fronting - Practice interdental placement for /ð/ vs. labiodental /v/.", | |
| "/ð/→/z/": "Voiced th-fronting - Practice interdental /ð/ vs. alveolar /z/.", | |
| "/ʃ/→/s/": "Sh-sound confusion - Practice /sh/ with tongue body back vs. /s/ with tongue tip up.", | |
| "/ʃ/→/tʃ/": "Fricative to affricate - Practice sustained /sh/ vs. stop-release /ch/.", | |
| "/tʃ/→/ʃ/": "Affricate to fricative - Practice stop component of /ch/ before fricative release.", | |
| "/tʃ/→/ts/": "Affricate substitution - Practice /ch/ with proper tongue placement and air release.", | |
| "generic": "Substitution error for {phoneme}. Practice correct articulator placement with mirror feedback. Start in isolation, then syllables, then words." | |
| }, | |
| "omissions": { | |
| "/r/": "Practice /r/ in isolation, then in CV syllables (ra, re, ri, ro, ru). Focus on tongue curl and lip position. Use visual cues and mirror feedback.", | |
| "/l/": "Lateral tongue placement - practice with tongue tip up to alveolar ridge. Start with /l/ in isolation, then blend into words.", | |
| "/s/": "Practice /s/ with tongue tip placement, use mirror to check position. Start in isolation, then fricative-only words (sss, see, say).", | |
| "/k/": "Practice velar /k/ with tongue back position. Use mirror to see tongue placement. Start with /k/ in isolation.", | |
| "/g/": "Practice voiced velar /g/ with tongue back. Start in isolation, then CV syllables.", | |
| "/t/": "Practice alveolar /t/ with tongue tip contact. Use mirror feedback for placement.", | |
| "/d/": "Practice voiced alveolar /d/ with tongue tip contact.", | |
| "/p/": "Practice bilabial /p/ with lip closure. Use mirror to ensure proper closure.", | |
| "/b/": "Practice voiced bilabial /b/ with lip closure.", | |
| "/f/": "Practice labiodental /f/ with lower lip to upper teeth contact.", | |
| "/v/": "Practice voiced labiodental /v/ with lip-teeth contact.", | |
| "/θ/": "Practice interdental /θ/ with tongue tip between teeth.", | |
| "/ð/": "Practice voiced interdental /ð/ with tongue tip between teeth.", | |
| "/ʃ/": "Practice /sh/ with tongue body back and lip rounding.", | |
| "/tʃ/": "Practice /ch/ with stop then fricative release.", | |
| "/dʒ/": "Practice /j/ (as in judge) with stop then fricative release.", | |
| "generic": "Omission error for {phoneme}. Say the sound separately first, then blend into syllables, then words. Use visual cues and mirror feedback." | |
| }, | |
| "distortions": { | |
| "/s/": "Sibilant clarity - use mirror feedback, ensure tongue tip is up and air stream is central. Practice sustained /s/ sound.", | |
| "/z/": "Voiced sibilant clarity - practice with voicing, ensure proper tongue placement.", | |
| "/ʃ/": "Fricative voicing exercise - practice /sh/ vs /s/ distinction. Focus on tongue body position.", | |
| "/tʃ/": "Affricate clarity - practice stop component then fricative release. Ensure proper timing.", | |
| "/r/": "Rhotacism - practice tongue position and lip rounding control. Use mirror to see tongue curl.", | |
| "/l/": "Lateral clarity - ensure tongue tip is up and air flows over sides of tongue.", | |
| "/θ/": "Interdental clarity - practice with tongue tip between teeth, ensure air stream is correct.", | |
| "/ð/": "Voiced interdental clarity - practice with voicing and proper tongue placement.", | |
| "/k/": "Velar stop clarity - practice with proper tongue back placement and release.", | |
| "/g/": "Voiced velar stop clarity - practice with voicing and tongue placement.", | |
| "/t/": "Alveolar stop clarity - practice with tongue tip contact and clean release.", | |
| "/d/": "Voiced alveolar stop clarity - practice with voicing and proper contact.", | |
| "generic": "Distortion error for {phoneme}. Use mirror feedback and watch articulator position carefully. Practice in isolation first, then in words." | |
| } | |
| } | |