🎙️ Transcription

Audio → text, in-browser, HIPAA-grade. Whisper WASM for clinical sessions; cloud Whisper for high-fidelity batch jobs. Audio never leaves the device unless the user explicitly opts into cloud upgrade.

🎚️ Three-Path Transcription

🩺 Live SOAP Dictation

The headline transcription use case. A clinician opens the session note, presses dictate, speaks the session out loud, and Synalux:

1. Transcribes locally (WASM) with word timestamps.
2. Identifies sections (Subjective / Objective / Assessment / Plan) by pattern.
3. Extracts ABC data (Antecedent / Behavior / Consequence) from natural-language descriptions.
4. Drafts the structured note for one-click sign-off.

See Applied Behavior Analysis and Clinical Notes Documentation for the downstream flow.

🗣️ AAC Voice Input

For Prism AAC users who can speak some words but use AAC for harder utterances:

• Whisper WASM transcribes speech in-browser, populates the keyboard input.
• Combined with autocorrect (Gemini 2.5 Flash-Lite) for typo recovery.
• Locale-aware: matches the user’s chosen language; supports code-switching (e.g. EN words inside a RO sentence).

🏗️ Architecture

POST /api/v1/transcribe      Server-side cloud Whisper (long-form, audit-logged)
                              body: { audio_url | audio_b64, lang?, model?='whisper-large-v3' }
                              returns: { text, segments[], language, duration_ms }

In-browser path (services/whisperService.ts):

• Whisper WASM model loaded lazily on first dictation use (~30MB cached in IndexedDB).
• WhisperX add-on (~10MB) loaded for word timestamps when user enables “speaker tracking”.
• Audio captured via MediaRecorder API → fed in chunks to the WASM transcoder.

⚖️ HIPAA + Privacy

• In-browser default — audio bytes never traverse Synalux infrastructure.
• Cloud upgrade requires explicit consent — UI shows a one-time consent gate per session before audio uploads.
• Audit logging — every cloud transcription writes to transcription_audit with user, session, audio duration, model used.
• No retention — server-side audio bytes deleted within 24h of transcription; only the text result + audit row persist.

💳 Plans

See full pricing → 

🔄 Inter-Module Integration

• SOAP / Clinical Notes — primary consumer; live dictation flow.
• Prism AAC — voice input → keyboard pre-fill.
• Telehealth — in-call live captions + recording-time transcription.
• Mail — voice replies (record → transcribe → edit → send).
• Translation — transcribed text can pipe directly into the Translation module.