An auditorium is a special room built to enable an audience to hear and watch performances at venues such as theaters and music halls. For movie theaters, the number of auditoriums is expressed as the number of screens. Auditorium can be found in entertainment venues, community halls, and theaters, and may be used for rehearsal, presentation, performing arts productions. Apart from entertainment, an auditorium also used for a space for speech delivery such as  lecture theaters. A successful design of auditoriums muchly depend on its acoustic design which include the auditorium layout plus absorption materials used. It is essential to preserve and enhance the desired sound and to eliminate noise and undesired sound.