Electronic sound (4)
'electronic sound' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for bleep that I've seen before include "Noise of alarm" , "High-pitched signal from device - you're needed" , "High-pitched sound" , "Censor" , "High-pitched electrical signal" .)
'electronic sound' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for beep that I've seen before include "Honk" , "Electronic warning sound" , "Toot" , "High-pitched noise" , "Alarming noise" .)