展示HN：无网络通信——仅靠光和声音（Spectra）
我们构建了SPECTRA——一个传输真实数字数据的系统，伪装成自然声音和光学现象。<p>没有Wi-Fi，没有GSM，没有互联网。只有隐藏在看似环境噪声中的二进制或三进制编码信号：鸟鸣声、光闪烁、风的调制。<p>与明显的无线电信号不同，SPECTRA使用：<p>声学掩蔽：嵌入自然声音模式中的频移编码。<p>光学掩蔽：通过LED和激光传输的二进制或RGB三进制编码，伪装成正常的光变化。<p>目标：创建一个具有韧性和隐秘性的通信系统，能够在传统网络失效或受到监控时生存下来。<p>灵感来自于原住民部落模仿鸟类发送信息的方式——现在通过嵌入式微控制器和动态适应进行了重新构想。<p>我们结合了光学和声学传输，以增强在不同环境条件下的生存能力。<p>早期原型及更多细节：<a href="https://alexs749266.github.io/SPECTRA-Communication/" rel="nofollow">https://alexs749266.github.io/SPECTRA-Communication/</a><p>欢迎分享任何想法或黑客创意！
查看原文
We built SPECTRA — a system for transmitting real digital data, camouflaged as natural sounds and optical phenomena.<p>No Wi-Fi, no GSM, no internet. Just binary or ternary encoded signals hidden in what looks like environmental noise: bird chirps, light flickering, wind-like modulations.<p>Instead of obvious radio signals, SPECTRA uses:<p>Acoustic masking: frequency-shifted codes embedded in naturally sounding audio patterns.<p>Optical masking: binary or RGB ternary codes transmitted through LEDs and lasers, camouflaged as normal light variations.<p>The goal: create a resilient, stealthy communication system that can survive when conventional networks fail or are under surveillance.<p>Inspiration came from how native tribes imitated birds to send messages — now reimagined with embedded microcontrollers and dynamic adaptation.<p>We combined optical + acoustic transmission to boost survivability under different environmental conditions.<p>Early prototype and more details:
<a href="https://alexs749266.github.io/SPECTRA-Communication/" rel="nofollow">https://alexs749266.github.io/SPECTRA-Communication/</a><p>Happy to hear any thoughts or hack ideas!