ACOUSTICS+2

The desirable acoustic properties of an auditorium can be contributed by its architecture.[[image:Auditorium_17.jpg width="560" height="427"]]
The desirable properties of an Auditorium for 100 people are: > > >
 * 1) Projection of sound: An effective auditorium will accomplish good projection of the sound to the rear of the auditorium so that those distant listeners will not experience the extreme loss of sound level.That projection is normally achieved by having a sufficiently long reverberation time. Another significant contributer will be a high, reflective ceiling to reflect sound to the back of the auditorium.[[image:aud1.jpg]]
 * 2) Clarity: It can also be diminished by undesirable echoes. At specific locations in auditoriums, clarity can be diminished by anything which blocks part of the direct sound and therefore increases the fraction of reverberant sound reaching a person.[[image:3045338817_d7486074e9_z.jpg]]
 * 3)  Even dispersion: Sound is more pleasing if it is evenly dispersed, with no prominent echoes, no significant "dead spots" or "live spots" in the auditorium. This even dispersion is usually achieved by avoiding any focusing surfaces and avoiding large flat areas which reflect sound into the listing area. Sometimes it is desirable to add some anti-focusing surfaces.