In order to reduce stray scatter due to unwanted target-room interactions, STL has developed a unique anechoic material called FIRAM®, which is superior by more than two orders of magnitude to other ...

Anechoic chambers are generally used for testing microphones and loudspeakers or other sound-producing devices when the absence of reflection is desirable.

A room is said to be acoustically 'dead' when it contains a great deal of sound absorbing material, such that there is little or no REVERBERATION, and strong ATTENUATION of high frequencies. The ...

On ultrasound, it is generally anechoic and shows significant posterior ... These may represent thick proteinaceous material, debris, or blood within the cyst. Without posterior acoustic ...