Eckel Industries, Inc., Acoustic Div.

Eckel Industries Inc. designs, fabricates and installs full and hemi-anechoic chambers to precise specifications for many industries and applications. We design chambers for government, institutional and industrial laboratories and testing facilities; and for industries including automotive, high-tech, energy, telecommunications, consumer products, audio & aircraftaerospace. Echo-Free Enclosures- Anechoic Chambers are echo-free enclosures with a sound energy absorption level of 99% to 100%, or a reflected sound pressure level of 10% or less. The frequency at which the energy absorption drops below 99%, or the pressure reflection exceeds 10%, is known as the low-frequency cut-off.

Anechoic Chambers are echo-free enclosures with a sound energy absorption level of 99% to 100%, or a reflected sound pressure level of 10% or less. The frequency at which the energy absorption drops below 99%, or the pressure reflection exceeds 10%, is known as the low-frequency cut-off.

SuperSoft panel linings for acoustic test facilities were developed to fill a niche in situations where a full anechoic chamber is not required. An existing or new structure can be lined with an extremely high performance acoustic panel to yield a test environment satisfactory for general product testing and noise emission.

• Gymnasiums, swimming pools, weight rooms and similar recreational facilitiesWater Treament Plants
• Auditoriums and TheatersSchools
• Libraries Police & Fire faFactories, assembly, and production areas
• RestaurantsBand & Music rooms
• Music & Television StudiosChurches, Synagogues and congregational buildings

FULL ANECHOIC CHAMBERS are engineered acoustical structures that simulate "free field" conditions, where the walls, floor or ceiling absorb 99% to 100% of the incident sound energy. These chambers are constructed with noise attenuating outer structures of masonry or modular panels and have all interior surfaces lined with anechoic wedges. (Right: Anechoic Wedges) Full anechoic chambers have working floors constructed of spring tension cable mesh or grating floor sections to support heavy test specimens above the floor wedges. These chambers are used for sound measurements in a wide variety of research and development applications such as analysis of patterns of noise for loudspeakers, microphones and electrical components, telecommunication & computer equipment, as well as clinic audiological research.

The EW Standard Wedge is the classic design based on the original geometry established by Beranek and Sleeper at Harvard during World War II. Current E.W. Wedges incorporate the latest materials and design modifications for a wedge treatment with maximum broadband performance.