Research
What the field does, what the evidence says, and what we decided because of it. Each piece is the working document, published as written. Clinical reviews and internal audits stay in the project repository.
TTS Voices in Pediatric AAC on iOS — Vendor Suppliers, Apple System Voices, Licensing, and Clinical Evidence (plus custom words with photos)
Why Oso Voice's voice picker shows Apple novelty voices ("Whisper") and how to filter them; which voice vendors the major pediatric AAC apps use (Acapela child voices dominate); what Apple exposes on iOS 17/18 (no genuine child voice; Personal Voice is a self-clone, not a stock voice); what licensing a child voice would require (Acapela iOS SDK, annual fee plus royalties, offline-capable); clinical evidence that age/gender-matched voices drive acceptance. Also records the /slp ruling on caregiver-added custom words with photos.
AAC Folder Navigation — Vendor Alignment Check for ADR 009
Verifies the five ADR 009 navigation/taxonomy decisions against how Proloquo2Go, TD Snap Core First, TouchChat/WordPower, LAMP Words for Life, Grid 3/Super Core, CoughDrop and Avaz handle folder overflow, alphabetical ordering, body-state words, pronouns/wh-words and Places. Four decisions match field practice; nesting body states inside Feelings diverges from the dominant separate Body/Health pattern. Addendum verifies the v2.4.1 page-1 priority order against published core-vocabulary lists and vendor first-page rules.
AAC Within-Category Organization — Vendor Scan, Clinical Grounding, Proposed Taxonomy
Vendor survey (Proloquo/Proloquo2Go, WordPower, LAMP/Unity, TD Snap, Grid 3/Grid for iPad, CoughDrop, Avaz, Speak for Yourself) and evidence synthesis on how large fringe categories are subdivided once they overflow one grid page, plus a proposed functional-subfolder taxonomy for Oso Voice's 5 remaining uncurated categories (descriptors, people, food, feelings, places).
The Mixed Home Page — Words and Folders on One Grid
Vendor survey (WordPower, Proloquo2Go, TD Snap, LAMP, Grid 3) and evidence synthesis on mixing core words and folders on the home grid — no surveyed system ships a categories-only home.
Is Oso Voice's Word Navigation Going the Wrong Way?
Deep-dive on TouchChat WordPower, Minspeak/Unity, and the AAC evidence base, testing whether Oso Voice's grid needs word-to-word correlation mechanics.
AAC Grid Navigation & Position-Stability — Competitive Research Findings
Competitive/field survey of how major AAC apps handle grid navigation and position stability, validating the fixed-paged-grid design's first four decisions.
Symbol Cell Color & Background Formatting — Research Findings and Decision
Evidence synthesis and ADR — full-cell background color does not aid symbol search at Oso Voice's grid sizes, so cells default to white with MFK border accents and pastel fills ship as an opt-in toggle.
Understanding the AAC Landscape — Full Project Research Report
The original market and evidence survey of the AAC app landscape (Proloquo2Go, TouchChat, pricing, feature norms) that motivated Oso Voice.