It was designed to be a proof-of-concept for collecting extremely low frequency earthquake precursor signals from space.
From the en.wikipedia.org
The collision may generate extremely low-frequency radio signals that will give us a much more accurate understanding of the size of the sun's domain.
From the sciencedaily.com
Home bases can then use extremely low frequency radio signals, able to penetrate the ocean's surface, to reach submarines wherever they might be.
From the en.wikipedia.org
He also learned that human brains could be controlled remotely through extremely low frequency modulated microwave beams, able to cause psychological and physical harm.
From the economist.com
High quality headphones can have an extremely flat low-frequency response down to 20 Hz within 3dB.
From the en.wikipedia.org
The study attributes ghostly experiences to an extremely low sound frequency called infrasound that humans normally can't hear.
From the edition.cnn.com
The other possibility is that elephant infrasounds are produced like human speech or singing, but because the elephant larynx is so large, they are extremely low in frequency.
From the sciencedaily.com
Raytheon's underwater sensors detect any unwelcome presence and trigger an underwater sound system that emits extremely powerful pulses of low frequency audio.
From the newscientist.com
Its sense of hearing is extremely acute, allowing it to localize the low-frequency noises generated by other feeding animals, and, by extension, sources of food.