pipe down!

listen to the pronunciation of pipe down!
Английский Язык - Турецкий язык
sus
{k} Kıs sesini!
sesini kesmek
susmak
Английский Язык - Английский Язык
To be quiet; to refrain from being noisy

Pipe down kids, I'm trying to work.

become quiet or quieter; "The audience fell silent when the speaker entered"
lower the tone, lower the sound level