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中文 Quietnet 是用近超声波频段传输文本的简易聊天程序，不依赖 WiFi 或蓝牙，也不会出现在 pcap 抓包中。亮点是借声音做隐蔽信道，依赖 pyaudio 与 Numpy，运行 send.py 和 listen.py 即可收发。适合想了解声波通信原理、做隐蔽信道实验的开发者，作者也说明它只是玩具。
日本語 Quietnet は近超音波帯でテキストを送る簡易チャットプログラムです。WiFi も Bluetooth も使わず、pcap にも残りません。pyaudio と Numpy に依存し、send.py と listen.py を別々の端末で動かして通信します。音響通信や隠蔽チャネルの仕組みを試したい開発者向けですが、作者自身が toy と述べています。
한국어 Quietnet은 근초음파 대역으로 텍스트를 주고받는 간단한 채팅 프로그램입니다. WiFi나 블루투스 없이 동작하며 pcap 캡처에도 남지 않습니다. pyaudio와 Numpy에 의존하고, send.py와 listen.py를 각각 실행해 사용합니다. 음향 통신이나 은닉 채널을 실험하려는 개발자에게 맞지만 제작자도 toy라고 밝히고 있습니다.
English Quietnet is a small chat program that sends text over near-ultrasonic frequencies, needing neither WiFi nor Bluetooth and leaving nothing in a pcap capture. It depends on pyaudio and Numpy, and you run send.py and listen.py in separate terminals. It suits developers exploring acoustic communication or covert channels; the author calls it a toy.
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Quietnet
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.
Usage
run python send.py in one terminal window and python listen.py in another. Text you input into the send.py window should appear (after a delay) in the listen.py window.
Warning: May annoy some animals and humans.
Installation
Quietnet is dependant on pyaudio and Numpy.
Better Projects
Quietnet is just a toy! Here are some more robust and polished projects to look at: