The reverberation time is oldest and best knowncriterion in the field of Acoustic. iIt is measured in seconds and is defined as the time taken for gnerated sound to decay by 60 dB after the sound source has been stopped. in 1920 W. C. Sabine publised an article concerning the relationship between reverberation time, volume and sound absorption. Althoug complex computer programmes and simulations are now available, the principles of room acoustics still revole around his simple equation.
As a division of Acoustics, room acoustics are concerned with the internal characteristic of specific areas. Whereever possible the proposed use of the room should be taken into account at design stage. ifthe primary use requires good speech intelligibilty, the interior design of the room wiil be different from that of a room whose primary use is music practice or recital. where a room is to be used for both purposes a gegree of compromise is required.
The most importan factors which influence the acoustic quality of an area :
- Locatinon of room within the building
- Sound insulation of the adjacent construction
- Sound generation from services
- Area shape and size ( primary structure )
- Sound absorption characteristic of all surfaces ( secondary structure )
- Furniture and equipment within the room ( secondary structure )
- Dimension and spatial distribution of sound absorbing and reflective surfaces
Key Selection Attributes Board
- Excellent sound absorption on high NRC / CAC items
- Nondirectional visual reduces installation time and scraps
- Humidity – resistant Acoustic Board performance to inhibit panel sag
- Formulated to withstnad conditions with temperatures up to 49’C and relative humidity up to 99%
- Non asbestos