This sound is from Emperor Palpatine Sounds: Star Wars

Sheev Palpatine, also known by his Sith name Darth Sidious, is a character in the Star Wars franchise created by George Lucas. In the original trilogy, he is depicted as the Emperor of the Galactic Empire and the master of Darth Vader.
See also: Palpatine family, Galactic Empire (Star Wars), Supreme Leader Snoke, Rey (Star Wars), Darth Vader, Stormtrooper (Star Wars),