An auditorium is a hall which is meant to gather public for presentation of performances. Auditoriums or seminar hall are normally present in educational institutes, corporate offices, public venues and allied corporations. Performances in auditorium or seminar hall may be in the form of school annual days, speech competition, prize distribution, presentation of company products and services. Auditorium has special stages for guest and presenters who lead the proceedings and the other part is of audience. Audience seating may be in the form of stairs chairs and small auditoriums are generally straight seated.

Auditorium or seminar hall sound system comprise of speakers, Amplifiers, mixers and microphones. The quantity and capacity of sound is designed according to the capacity of audience and the size of the auditorium or seminar hall. In designing of auditorium or theatre sound system the hall acoustic is very important, since the gathering has a purpose to convey important message by a important guest and senior persons so the proceeding cannot be afford any nuisance and disruption in noise.