According to Hindu scriptures, the sound of the temple bells awakens the Gods and the Goddess. Ringing these bells in a rhythmic patter fills the surrounding area with positive energy.
Skand Purana says, a man washes off the sins of 100 births by ringing the temple bells.
Many people believe that ringing the temple bell awakens the person and prepares him/her for the taste of awareness.
Scientifically, the sound of temple bell creates vibration in the surrounding areas that keeps the animals, insects, birds away from the temple.