Acoustic Insulation

The rate at which sound is absorbed in a room is a prime factor in reducing noise and controlling reverberation. 

All materials used in the construction of buildings absorb some sound, but proper acoustical control often requires the use of materials that have been especially designed to function primarily as sound absorbers.  Such materials are popularly known as 'acoustical' materials. 

Within the past few decades, there has been a tremendous increase in the use of acoustical materials, especially for the reduction of noise in office buildings, hospitals and restaurants. Many people tolerate 'noise, but most people do not like it. This probably is the reason why many business establishments have found that the cost of acoustical treatment usually is more than offset by the profits resulting from the increase in patronage after the installation of the absorptive material in the get-up of the place. 

Transite Acoustical Panels to Wood Furring Strips

Many different acoustical materials are now available for use in buildings. Sound is absorbed by a mechanism which converts sound into other of energy and ultimately into heat. Quality of such manufactured materials depends largely on their power of sound absorption. Many materials, such as mineral wools, pads .and blankets have a multitude of small, deeply penetrating and intercommunicating pores. The sound waves can readily propagate themselves into these interstices, where a portion of the sound energy is converted into heat by fictional and viscous resistances within the pores and by vibration of the small fibers of the material. If the material is sufficiently porous and of appropriate thickness as much as 95% of the energy of an incident sound wave may be absorbed in this manner. 

Absorption of sound by porous materials is normally large at high and small at low frequencies. Absorption by panel vibration is small at high frequencies but may  be large at low frequencies. Both these types of absorption are important in the control of sound in rooms. By using them in proper proportion it is possible to control the absorption of sound throughout the audible range of frequencies. This becomes a necessity in sound recording and radio studios and is often desirable elsewhere.

Methods of Mounting Prefabricated Acoustical Units