Ear plug used in this study is a foam earplug made from polyurethane with noise reduction rating (NRR=29 dB, SNR=37dB). It is inserted into the ear canal to protect the user's ear from loud noise. The earplug used was manufactured by 3 M occupational health and environmental safety division company of India manufactured in Bengalaru560.Ear plug helps to reduce noise intensity which helps to decrease auditory perceptual processing.