A newer version of this that works in a similar way but a different way is called RNA interference, and it turns out that this is a natural mechanism that cells have.
Philips SoundSphere speakers have a uniquely positioned tweeter and woofer with rigorous audio crossover engineering that minimizes interference and produces a more natural sound.
By comparing the GPS and eLoran time signals with its internal clock, each probe can detect interference and determine whether it is natural or man-made.