This application transmits and decodes text data using high-frequency sound waves. It runs 100% locally and offline.
Configure parameters or run diagnostics in the settings panel (top right).
SYSTEM
SETTINGS & DIAGNOSTICS
Audible protocols are robust in noisy rooms. Ultrasound (18kHz+) and Inaudible (20kHz+) ranges are silent to human ears, but may be less robust in some environments.
Plays a confirmation chime before transmitting data waves.
Shows quick template words above the input field.
SECURE COMMUNICATION
Add your friends' callsigns and keys to decrypt their incoming messages.
SYSTEM DIAGNOSTICS
Generates a local diagnostic signal to test the WebAssembly compiler and audio loopback.