Show HN: Wireless Audio Modem Libraries

2 points

3 years ago

I have created a library for transmit digital data via acoustic signals. Allowing wireless digital communication at low speeds of 50 bps to 1 kbps with general audio devices. Without radio device or cable. The communication range is approximately 60cm.

https://www.youtube.com/watch?v=4cB3hWATDUQ

Live demo

You can try sending and receiving half-duplex texts in browser.(PC or smartphone.) Prepare a computer and a smartphone or two or more smartphones. If a combination of a computer and a smartphone, it is easier the computer side is the transmitter.

https://nyatla.jp/tbskmodem/index.en.html

Use case

- Data transfer from websites not via the Internet. - Offline data transfer between smartphones. - Simple digital data communication via general voice lines (voice telephone lines, AM/FM broadcasts, string phones, etc.). - Digital storage in classical analog signal equipment (cassette tapes, etc.). - Data transfer/retrieval to/from embedded devices and uploading to websites.

Source file

- Python (Anaconda+Windows/Linux) https://github.com/nyatla/TBSKmodem https://pypi.org/project/tbskmodem/

- C# (Windows) https://github.com/nyatla/TBSKmodemCS

- C++ (Windows/Linux/Emscripten) https://github.com/nyatla/NyARToolkitCPP

- JavaScript (Chrome/Safari※/SilkBrowser) https://github.com/nyatla/TBSKmodemJS https://www.npmjs.com/package/tbskmodem-js