chirp_codec

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Near-ultrasonic FSK data-over-sound codec in pure Dart: encode a 16-bit payload as 4-FSK symbols in the 18–19.2 kHz band and decode it from raw mic PCM with Goertzel filters. No plugins, no FFI — work [...]#audio#ultrasonic#data-over-sound#fsk#proximity

v 0.1.0 (43 days ago)MIT

SDKDartFlutter

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