CH 03
— Project
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Transmission 05 · 2023
SIGNAL_PATHSIGNAL_PATH
Low-latency audio routing daemon for live studio transmission.Low-latency audio routing daemon for live studio transmission.

- Role
- Solo — audio path & control UI
- Stack
- Rust · Tokio · WS
- Timeline
- Jan — Jun 2023
- Status
- Shipped · In service
// Briefing
A live studio routes dozens of audio feeds between rooms, and the routing box doing it added forty milliseconds nobody could account for. Forty milliseconds is the difference between a presenter hearing themselves and a presenter stumbling.
SIGNAL_PATH replaces the box with a Rust daemon: lock-free buffers on the audio path, Tokio on the control plane, and a WebSocket surface any desk in the building can drive. The path now measures under four milliseconds, and it publishes that number continuously.
// Highlights
- — Sub-4ms end-to-end routing
- — Lock-free on the audio path
- — Latency published, not promised