Anechoic Chamber

An anechoic chamber is a shielded room that has radio-wave absorbing material applied to the walls, ceiling, and floor. Chambers may be tabletop-sized enclosures but are normally room-sized enclosures where engineers can walk in and work. The absorbers on the inside surfaces are often pyramidal in shape and give the room a unique “science fiction” look. At Antenna Test Lab Co, we often find that comparing antennas and radio waves to light is helpful in our customer’s understanding of basic concepts. We often illustrate the anechoic chamber’s functionality with the following flashlight comparison. You may have also heard that they are very expensive. (Read More)

You decide to paint over the mirrors with flat black paint, one that absorbs lots of light. Now you have an optical anechoic chamber. No more reflections, or echoes. The word anechoic means without echoes. Now your test flashlight appears to be in free space. There is no ambient light, and the walls are not visible. They are constructed to attenuate noise with their outer structures fabricated with modular panels. The inner surfaces are lined with metallic wedge/ PU wedge/ plain to act as absorbing surfaces.

The effectiveness of an Anechoic Chamber is measured in dB of rejection, which is the ratio of direct sound to reflected sound inside the room. Our designed anechoic chamber provides performance up to 15 dB(A) and an 80 Hz cut-off frequency or performance can be designed as per the client’s requirement to match with desired performance. Envirotech is India’s best Manufacturer of Anechoic Chamber with 20+ years of Experience. A fully functional anechoic chamber has functional floors that have grating to support any heavy test subject. They are designed to suppress all internal sounds and are used to measure acoustical severity.