Ceilings acoustical treatment

Even a small room will benefit from acoustical ceiling treatment. A veterinarian s examining room was only about 7x7 feet, but with its hard walls and ceiling and no upholstered furniture to break up the sound weaves, conversation w as uncomfortable. Proper ceiling treatment would have made a great deal of difference. 

Sound absorption and vibration isolation Wall coverings for music studios, coatings for car ventilation units, computer and printer housings, acoustical absorption in metal building, industrial ceiling treatments. 

In situations where there is a high degree of reflection of sound waves, i.e. the building is acoustically hard, the reverberant component can dominate the noise field over a large part of the work area. The introduction of an acoustically absorbent material in the form of wall treatment and/or functional absorbers at ceiling height as shown in Figure 20.14 will reduce the reverberant component by up to 10 dBA , but will not reduce the noise radiated directly by the source. 

The following data apply mainly to acoustic ceiling treatments, but other surfaces may be similarly treated. These data do not apply to through-transmission of sound. Low sound transmission accompanies high density or weight of material. 

Absorption treatment in the form of wall applications or ceiling panels these must be designed for acoustic purposes to have significant effect and are rarely encountered in the construction industry except as part of structures to be built or fitted out. 

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