Sound that prevents what was actually said being heard (5)

I believe the answer is:

bleep

(Other definitions for bleep that I've seen before include "warning sound" , "Noise of alarm" , "High pitched signal" , "High-pitched electrical signal" , "Short high tone as a signal or warning" .)

I've seen this clue in The Guardian.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.