IAC Acoustics has installed hundreds of hemi-anechoic facilities to universities, research laboratories and test houses. Our range of single and double wall construction rooms allow for high precision measurements to be carried out in a hemi-anechoic environment.


Typical uses include testing microphones, hearing protection devices and hi-fi equipment. The hard reflective floor is typically used when larger or heavier items are tested where a full anechoic facility would be impractical, or when the normal mode of operation is over a reflective plane such as a floor or hard road surface.


High precision hemi-anechoic chambers from IAC Acoustics offer the same build specification as our range of fully anechoic chambers, except with a hard, isolated floating floor, rather than one lined with anechoic wedges.


Hemi-anechoic rooms come with the following standard features:

  • Anechoic wedges (foam, fibreglass or IAC Metadyne®) with the required low-frequency cut-offs
  • Double or single acoustic panel wall construction
  • IAC Acoustics standard ventilation system coupled to the building supply
  • Lighting (interior) minimally acoustically reflective
  • Circular cable ports
  • Interior non-reflective cable floor system above the floor wedges with a nylon catch net below
  • IAC Acousti-flote™ floor system with vibration isolators
  • One IAC Noise-lock® wedge acoustic door


  • Additional or larger Noise-lock® acoustic doors
  • Access panels for equipment and test openings
  • Double Acousti-flote™ floor for anechoic rooms
  • Air mounts, springs or other types of vibration isolators
  • Independent ventilation system