Acoustical Materials

Common building materials are absorbents of different levels. Such materials are called as absorbent materials.

Table 28.3 Acoustics level and reverberation time

Table 28.4 Optimum reverberation time for closed area

Qualities of a good acoustical materials are as follows:

1. An absorbent material should be economical for construction and should be waterproof, fireproof, adequate strength and heat resistant.
2. It should be durable and easy for maintenance.
3. It should have high absorption capacity.
4. It should be easy to fix and should be self-supporting.

Some of the acoustical materials are discussed below.