moving ridge, wave - one of a series of ridges that moves across the surface of a liquid (especially across a large body of water)

electronics - the branch of physics that deals with the emission and effects of electrons and with the use of electronic devices

oscillation, vibration - (physics) a regular periodic variation in value about a mean

flow, flux - move or progress freely as if in a stream; "The crowd flowed out of the stadium"

sound, go - make a certain noise or sound; "She went `Mmmmm'"; "The gun went `bang'"

gurgle - make sounds similar to gurgling water; "The baby gurgled with satisfaction when the mother tickled it"