Final answer:
An acoustical ceiling, made of sound-absorbing material, helps reduce noise and improve the acoustic environment within a room. An acoustical ceiling refers to a ceiling made of sound-absorbing materials such as acoustical tile. It is designed to reduce echo and noise levels in a space.
Step-by-step explanation:
A ceiling made of acoustical tile or other sound-absorbing material is commonly referred to as an acoustical ceiling. These ceilings are designed to reduce noise levels within a room by absorbing sound rather than reflecting it. Acoustical ceilings are commonly used in offices, schools, and other spaces where controlling sound is important to reduce echoes and improve the overall acoustic quality.
They do not completely soundproof a room but significantly reduce the reverberation and make the environment more acoustically pleasant.