Category
page 1Noise reduction
suppressor
device which reduces sound intensity or muzzle flash on a firearm
soundproofing
upright=1.35|thumb|A pair of headphones being tested inside an [[anechoic chamber for soundproofing]]

earmuffs
thumb|A person wearing earmuffs that provide hearing protection
active noise control
method for reducing unwanted sound by the addition of a second sound specifically designed to cancel the first
noise reduction
process of removing noise from a signal
acoustical engineering
branch of engineering dealing with sound and vibration
noise gate
audio processing device
noise-cancelling headphones
type of headphones
acoustic foam
open celled foam used for acoustic treatment
ear protection
devices used to protect the ears; they are known as Personal Protective Equipment, which aims to reduce risks in the environment and protect hearing against the emergence of possible occupational diseases