Many of us might have seen it or might have experienced it. Be it at parties or halls with dj parties or an award function, light and sounds form an integral part of the event. Same can be said about a tourist bus as well. The tourist buses which test the limits of one's hearing and sight, are a favourite among the youngsters who are out on a study tour. It is these same kids who are well aware of the fact that sound volumes if raised above 80 decibels can cause damage to hearing. Nammalariyanam