What do you as the user need to know about Room Acoustic Comfort™?

User

In many of the commonly occurring types of rooms that we talk about here, a sound-absorbing ceiling is a practical aid for achieving RAC™. The ceiling’s sound-absorbing properties are described in sound absorption classes (A-E) in an international standard. Class A is the highest level of sound absorption.
 
The ceiling’s effect on different acoustic descriptors:

Reverberation time: The sound-absorbing ceiling will interact with the sound-scattering furnishings in the room. The more sound-scattering objects there are, the greater the benefit of the ceiling. In a sparsely furnished room, the reverberation time can be long as the sound energy lingers between sound-reflecting walls.
 
Sound level: The sound level that is constantly generated in the room will, on the other hand, be effectively dealt with by the ceiling and be less dependent on sound-scattering objects. A sound absorption class A product provides the most effective decrease in the sound level.
 
Speech clarity: Suspended ceilings have a positive effect on speech clarity by reducing the reverberance in the room. A good, effective, sound-absorbing ceiling contributes to a good relation between early and late sound reflections in such a way as to benefit speech clarity. a) Early sound reflections in relation to late sound reflections
 
Remember

Remember:
  • The ceiling’s sound absorbing properties are described in sound absorption classes (A-E) in an international standard
  • Class A is the highest level of sound absorption
  • Effective, sound-absorbing ceilings (Sound absorption class A) affect reverberation time, sound level, speech clarity and spatial decay, thus creating good Room Acoustic Comfort