Case study

OpenChirp: reconstructing the Chirp audio protocol

OpenChirp reconstructs the Chirp data-over-audio protocol in an Android transmitter and receiver example. Its notes describe the frequency alphabet, payload and header frames, and Reed–Solomon error symbols, with an Octave walkthrough of the encoding.

Targets: Protocol
Category: Independent reconstruction cases
Relationship: Independent reconstruction project
Sources reviewed: 2026-11-08

Stars: 108
Last commit: 2019-12-16
Language: Java
License (GitHub): Apache-2.0

GitHub data as of 2026-11-09

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Requirements & limits

Prerequisites: The Android example depends on zxing-core and tarsosdsp.
Scope: The implementation is an Android example.
License: Apache-2.0 licence.

Cite

BibTeX

@misc{openchirp-audio-protocol-case,
  title = {{OpenChirp: reconstructing the Chirp audio protocol}},
  howpublished = {\url{https://github.com/cawfree/OpenChirp}},
  url = {https://github.com/cawfree/OpenChirp},
  urldate = {2026-11-08},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/openchirp-audio-protocol-case/}}
}

Plain text

OpenChirp: reconstructing the Chirp audio protocol. https://github.com/cawfree/OpenChirp (accessed 2026-11-08). Awesome REA entry: https://awesomerea.org/resources/openchirp-audio-protocol-case/

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About this entry

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Primary sources

README.md GitHub · cawfree/OpenChirp · Revision 8d21eb5