Fully anechoic chamber

Anechoic chamber with sound absorption wedges on all 6 internal surfaces of a room. IAC Acoustics A/S have the most experience with anechoic chambers in Northern Europe. Not only do we have the greatest expertise, we also have the best products and the most complete solutions.

Fully Anechoic Chamber

IAC Acoustics A/S has the most experience in Europe with anechoic chambers. Since we opened in Scandinavia in 2000, we delivered dozens of anechoic chambers to respected companies such as Nokia, Oticon, Sennheiser and universities in the Nordics.

A fully anechoic chamber, also known as an echo-free room, is typically a box-in-box structure. 99% of all sound energy over a defined frequency band is absorbed by the walls, floors and ceilings, thus simulating a measurement set-up floating high up in the air, free of reflection and background noise.

ISO standards for anechoic chambers

An anechoic chamber must generally meet the requirements described in ISO 3744 or ISO 3745. Thus, electronics and hardware can be tested and certified according to various standards. Here, we have great expertise.

Understanding of room acoustics, building acoustics and electro-acoustics

To build an anechoic chamber is a multidisciplinary discipline which requires a deep understanding of room acoustics, building acoustics and electro-acoustics. Furthermore, knowledge of building work and construction is also a prerequisite for good solutions. As professionals, we help with the difficult requirements analysis and with defining the requirements for room size and cut-off frequency. We advise on, and perform, measurement set-ups and insertion attenuation across walls and acoustic weak points such as doors, ventilation systems, cable ducts and more.

We provide the full package: We design, deliver and install. And finish up with a measurement report showing that the room meets the acoustic objective.

As a rule, our fully anechoic chambers are box-in-box constructions delivered with:

• Soundproof doors with "basket-door"
• Silenced adjustable ventilation
• Silent adjustable lighting
• Installation on vibration silencers
• Soundproof cable lead-ins
• Sound absorption wedges made from acoustic foam with an added flame retardant
• Cable flooring/trampoline floors or acoustic, transparent grid floor.
• Net which collects things that are dropped through the floor.
• Power and electrical installations
• Fixtures and holders for measurement setups

Anechoic chamber for testing and research

IAC Acoustics deliver turn-key products - from initial guidance and advice, to building and installing the anechoic room. And not least documenting, that the facilities meet the customer’s requirements and the superior standards of IAC Acoustics. Meet the researchers at the Technical University of Denmark North of Copenhagen who needed an Anechoic chamber with absolute silence to do research in.