Examples: Dining rooms (many people talking at once, noise from china and cutlery), institutional kitchens (kitchen equipment, reflecting work surfaces etc.), corridors (sound of walking, speech, general noise)
To consider in room acoustic design:
In these environments, it is desirable to create low sound levels in order to reduce stress and invoke calm. Where possible, a class A ceiling should be supplemented with wall absorbers.
In dining rooms, sound-absorbing and sound-proofing screens can be used between groups of tables. For screens to give a good effect, it is important that the ceiling has as good absorption as possible.
Class A ceilings in corridors result in a more uniform sound environment by reducing the acoustic difference between adjacent, acoustically treated areas. This contributes to a calmer environment and less disturbance of adjacent areas.