Acoustic Chambers

Acoustic Chambers – Anechoic, Hemi-anechoic & Reverberation

The Alfa Acoustics fully anechoic chambers are designed for research and precise sound measurements in a free-field acoustic environment. These chambers provide high sound transmission loss (STL) characteristics and have a completely anechoic wedge-lined interior to meet ISO 3745 / ISO 26101 standard requirements.

The sound absorption wedges used by Alfa Acoustics are optimized PU Foam wedges, Melamine foam, or Polyester Wedges. These materials provide very high sound absorption across the frequency range of interest.

For maximum sound insulation, our rooms are designed as a room within a room lined with high-quality acoustic materials. The inner room is set on a vibration isolation system created for the specific weight and frequency cut-off of the room.

These chambers are designed for applications and locations where the noise reduction characteristics for a single wall and ceiling construction provide adequate noise isolation.

Alfa Acoustics provides Anechoic chambers, Hemi-anechoic chambers, Reverberation chambers, Mini anechoic chambers, and Silent Rooms (Jury Testing) for Sound Quality Analysis.

Alfa Acoustics also provides testing / qualification of these chambers using HBK Test instruments.

Standard Features
  • Anechoic foam wedges (PU, Melamine or Polyester) with the required low-frequency cut-offs
  • Double or single wall and ceiling acoustic panel construction
  • Lighting (interior) minimally acoustically reflective
  • Circular sound reducing cable ports
  • Non-reflective floor system
Anechoic Foam Wedges
Mini Anechoic Chamber
Reverberation Chamber
Inside Anechoic Chamber

Features of the Wedges

  • Fire-rated or Class A fire retardant acoustical foam
  • High performance absorption
  • Lightweight, completely open cell porous
  • Fiber-free and eco-friendly
  • Anechoic wedge design
  • Withstands constant temperatures up to 200°C
  • Easy to install with professional results
PU Foam Wedges 350 mm

PU Foam Wedges 350 mm

Melamine Wedges 50 mm

Melamine Wedges 50 mm

Reverberation Chamber

Random Incidence Sound Absorption of 350 mm PU Foam Wedges measured inside a Reverberation chamber