The Voice-First AI Overlay: Designing Conversational Co-Pilots
summary
An AI overlay listens passively to live calls, scrapes messy captions and runs a lightweight LM pipeline with caption scraping, smart debouncing, and separate suggestion and translation endpoints to produce phrase suggestions and definitions for a language lesson demo that actually surfaces helpful hints. Engineering notes include jitterbug input, context repair, premature interrupt or no-show, and 500–700 ms roundtrip as an achievable latency target; the demo stitches these pieces together and demonstrates workable realtime assistance without becoming a third speaker.
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chapters (9)
- 0:00Introduction
- 3:56Real-time conversational demo
- 5:30Overlay paradigm in calls
- 6:56Overlays in AI stack
- 8:02Overlay engineering challenges
- 10:51Four overlay challenges
- 12:39Why this space excites me
- 14:03Open questions & future
- 16:28Closing & Q&A
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