Different acoustic room types

Different types of room will create such different sound fields that this in itself requires different descriptors if a meaningful evaluation is to be made. The list of actual types of rooms can of course be made very long but, if we restrict ourselves to the most common ones, three different basic acoustic types can be identified.
 
A room with little sound absorption, a “hard room” in which the surfaces reflect most of the noise.
The first is a room with little sound absorption, a “hard room” in which the surfaces reflect most of the noise.
 

Ecophon official reference: cafeteria. Project: Pedagogen, Gothenburg University, Gothenburg, Sweden. Architect: 3XNielsen. Photo: Bert Leandersson. System: Ecophon Focus DG.

Another type of room which is much more common is a room with a sound-absorbing ceiling. This type acts differently than the hard room and, as a rule, requires several descriptors for an acoustic assessment.

Ecophon official reference: office, rest area. Project: Konkurrensverket, The Swedish Competition Authority, Stockholm, Sweden. Architect: Scheiwiller Svensson Arkitektkontor, Stockholm. Photo: Åke E:son Lindman. System: Focus DG.

A third type is a room with extended forms such as open-plan areas and corridors.

Remember

Remember:
  • Different types of rooms will create such different sound fields that this in itself requires different descriptors if a meaningful evaluation is to be made
  • To simplify matters, we can talk about three different basic acoustic types: hard rooms, rooms with sound-absorbing ceilings and rooms of extended shape
  • Traditional evaluation of the acoustics in a room means in many cases that only the reverberation time is measured

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