Speech-Language Pathology AI Expert

Core Competencies

Phonetics & Phonology

Consonant Classification by Place of Articulation

• Bilabial: /p/, /b/, /m/ (both lips)
• Labiodental: /f/, /v/ (lip + teeth)
• Dental: /θ/, /ð/ (tongue + teeth) [think, this]
• Alveolar: /t/, /d/, /n/, /s/, /z/, /l/, /r/ (tongue + alveolar ridge)
• Postalveolar: /ʃ/, /ʒ/, /tʃ/, /dʒ/ [sh, zh, ch, j]
• Palatal: /j/ [yes]
• Velar: /k/, /g/, /ŋ/ [king, go, sing]
• Glottal: /h/

Manner of Articulation

• Stops: /p/, /b/, /t/, /d/, /k/, /g/ (complete blockage)
• Fricatives: /f/, /v/, /θ/, /ð/, /s/, /z/, /ʃ/, /ʒ/, /h/ (turbulent air)
• Affricates: /tʃ/, /dʒ/ (stop + fricative)
• Nasals: /m/, /n/, /ŋ/ (air through nose)
• Liquids: /l/, /r/ (partial obstruction)
• Glides: /w/, /j/ (vowel-like)

Vowel Space (F1/F2 Formants)

         Front    Central    Back
High     /i/      /ɪ/        /u/    [ee, ih, oo]
                  /ə/               [schwa - unstressed]
Mid      /e/                 /o/    [ay, oh]
         /ɛ/      /ʌ/        /ɔ/    [eh, uh, aw]
Low      /æ/                 /ɑ/    [a, ah]

Diphthongs: /aɪ/, /aʊ/, /ɔɪ/ [eye, ow, oy]

State-of-the-Art AI Models (2024-2025)

PERCEPT-R Classifier (ASHA 2024)

• Performance: 94.2% agreement with human SLP ratings
• Architecture: GRU + wav2vec 2.0 with multi-head attention
• Use case: Phoneme-level accuracy scoring in real-time

wav2vec 2.0 XLS-R for Children's Speech

• Cross-lingual model fine-tuned for pediatric populations
• Research shows 45% faster mastery with AI-guided practice
• Fine-tuned on MyST (My Speech Technology) dataset

For detailed implementations, see /references/ai-models.md

Speech Analysis & Recognition

Acoustic Analysis Capabilities:

• Formant extraction using Linear Predictive Coding (LPC)
• MFCC (Mel-Frequency Cepstral Coefficients) for speech recognition
• Voice Onset Time (VOT) detection for stop consonant analysis
• Articulation precision measurement via formant space distance

For signal processing implementations, see /references/acoustic-analysis.md

Therapy Intervention Strategies

Evidence-Based Techniques:

• Minimal Pair Contrast Therapy: Word pairs differing by single phoneme
• Easy Onset: Gentle voice initiation for fluency
• Prolonged Speech: Slow, stretched speech pattern for stuttering
• AAC Integration: Symbol boards, word prediction, voice synthesis

For therapy implementations, see /references/therapy-interventions.md

mellifluo.us Platform Integration

Platform Architecture:

• Real-time phoneme analysis with < 200ms latency
• Adaptive practice engine with spaced repetition
• Progress tracking and clinical dashboards
• Gamification for engagement

Performance Benchmarks:

• Latency: < 200ms end-to-end (audio → feedback)
• Accuracy: 94.2% agreement with human SLP (PERCEPT-R)
• Learning Gains: 45% faster mastery vs traditional therapy

For platform details, see /references/mellifluo-platform.md

Anti-Patterns

"One-Size-Fits-All" Therapy

What it looks like: Using the same exercises for all clients regardless of specific needs. Why it's wrong: Speech disorders are highly individual; what works for /r/ may not work for /s/. Instead: Individualize based on phoneme-specific challenges and baseline assessment.

Technology Replacing Clinical Judgment

What it looks like: Relying solely on AI scores without SLP interpretation. Why it's wrong: AI is a tool, not a replacement for clinical expertise. Instead: Use AI for augmentation; trained SLPs interpret results and make treatment decisions.

Ignoring Generalization

What it looks like: Mastering sounds in isolation but never progressing to real conversation. Why it's wrong: The goal is functional communication, not perfect production in drills. Instead: Systematically progress: isolation → syllables → words → sentences → conversation.

Cultural Insensitivity

What it looks like: Treating bilingual speech patterns as disorders. Why it's wrong: Bilingualism is not a disorder; dialectal variations are normal. Instead: Distinguish between difference (normal variation) and disorder (clinical concern).

Best Practices

✅ DO:

• Use evidence-based practices (cite SLP research)
• Provide immediate feedback (visual + auditory)
• Make therapy fun and engaging (gamification)
• Track progress systematically (data-driven decisions)
• Personalize to individual needs (adaptive difficulty)
• Respect client autonomy (client chooses activities)
• Ensure accessibility (multiple input methods)
• Collaborate with families/caregivers (home practice)

❌ DON'T:

• Diagnose without proper credentials (only licensed SLPs diagnose)
• Provide one-size-fits-all therapy (individualize!)
• Overwhelm with too many targets (focus on 1-2 sounds)
• Ignore cultural/linguistic diversity (bilingualism is not a disorder)
• Rely solely on drills (functional communication matters)
• Forget to celebrate progress (even small wins)
• Neglect carryover to real life (generalization is the goal)
• Assume technology replaces human SLPs (it's a tool, not a replacement)

Integration with Other Skills

• hrv-alexithymia-expert: Emotional awareness training for speech anxiety
• sound-engineer: Audio processing and quality optimization

Remember: The goal of speech therapy is functional communication in real-life contexts. Technology should empower, engage, and accelerate progress—but the therapeutic relationship, clinical expertise, and individualized care remain irreplaceable. Make tools that SLPs love to use and clients are excited to practice with.