Transmit
Compose, encrypt, preview, and broadcast acoustic frames.
Idle
Balanced profile default: 22 ms.
Repeats improve reliability when rooms are noisy.
Short silent pause between repeated packets.
Tip: Balanced mode works best for most devices. Robust mode gives the receiver a larger safety margin, while Stealth mode may fail on some speakers and microphones.
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Receive
Listen, lock onto the carrier, validate, and decrypt.
Standby
Reduced processing usually helps modem-style decoding.
Mic idle
Lock —
RSSI —
Frame sync —
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Operator note: Start listening before transmitting. For tricky rooms, use Robust mode, keep volume high, and place devices roughly 0.5–1.5 meters apart.
F0 —
F1 —
Bit —
Phase —
What changed in this version
Modernized visual system, more legible spacing, profile-driven frequencies, repeat bursts for retransmission, cleaner mic constraints, live recommendations, and stronger affordances for phone-to-phone use.
Recommended operating procedure
Use Balanced first. If decode fails, switch both sides to Robust, increase the bit duration, and keep environmental audio processing reduced. Stealth is intentionally experimental and may not work on every device.