fibre ceiling panels
-
...
The primary function of acoustic ceilings is to enhance sound quality within a space. Acoustic performance is measured using a coefficient known as the Noise Reduction Coefficient (NRC), which ranges from 0 to 1. A product with a higher NRC rating indicates better sound-absorbing capabilities. Mineral fiber acoustic ceilings typically have NRC ratings between 0.5 and 0.9, making them effective at minimizing echo and reverberation.
mineral fiber acoustic ceiling

...