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Accessibility2024

Speech-to-Sign Engine

Real-time sign language interpretation for classrooms and desks.

01 · Problem

What wasn't working

Existing sign language tooling lags speech by multiple seconds, breaking the rhythm of real conversation.

02 · Solution

How we approached it

A streaming pipeline that runs speech recognition, gloss translation, and avatar rendering concurrently with <400ms end-to-end latency.

03 · System Design

Architecture &
key features.

Architecture

  • Streaming ASR with partial hypotheses
  • Gloss translation transformer
  • WebGL avatar renderer
  • Edge-deployed inference

Features

  • <400ms latency budget
  • Classroom + helpdesk modes
  • Multi-language input
  • Offline fallback
  • Web + native SDK

04 · Results

Numbers measured in production, not on a pitch deck.

<400ms

End-to-end latency

Faster than prior tools

95%

Comprehension score

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