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Simple chat program using inaudible sounds and a computer's microphone and speaker.


Simple chat program using near ultrasonic frequencies. Works without Wifi or Bluetooth and won't show up in a pcap.

Note: If you can clearly hear the send script working then your speakers may not be high quality enough to produce sounds in the near ultrasonic range.


run python in one terminal window and python in another. Text you input into the window should appear (after a delay) in the window.

Warning: May annoy some animals and humans.



Quietnet is dependant on pyaudio and Numpy.

Better Projects

Quietnet is just a toy! Take a look at minimodem or gnuradio if you need something robust.

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