Message in a Space Bottle
Two spacecrafts, Voyager 1 and Voyager 2, were launched by NASA in 1977. Now located in interstellar space and considered the farthest man-made objects from Earth, these spacecrafts left our solar system in 2004 carrying unique images and sounds from planet Earth to communicate a story of our world to extraterrestrial life, should they ever meet. These sounds were engraved on a gold-plated copper phonograph record called the "Golden Record."
This sound generator relies on a subset of the Golden Record tracks. Playing all sliders at the same time creates a hubbub that could be considered the white noise of planet Earth itself, if we were heard from a distance in space. This generator is a powerful noise blocker, efficiently covering speech in noisy open offices.
Credits for this generator go to the National Aeronautics and Space Association (NASA), and as well to Carl Sagan, who chaired the committee responsible for assembling the images and sounds that traveled with the Voyager ships.