fully anechoic chamber (FAC)
- An anechoic or anechoic chamber, Fully Anechoic Chamber(FAC) or Fully Anechoic Room( FAR), is an anechoic and anechoic room in which sounds have no echoes or reverberation. It is a room in which any sound is totally absorbed. To achieve total absorption, the walls, ceiling and floors of anechoic chambers are fitted with pyramid-shaped absorbers that completely absorb the emitted sound and do not reflect any sound energy. Loudspeakers, microphones and the sounds of mechanical equipment can be tested in such anechoic chambers.
- The terms Fully Anechoic Chamber or Fully Anechoic Room are also used in high- frequency engineering, referring to an anechoic room equipped with RF absorbers in which no high-frequency vibrations are reflected. Depending on the frequency range, absorber tiles made of ferrite (up to 2 GHz) or foam absorbers (up to 100 GHz) are used. Anechoic In contrast to anechoic chambers, there are semi-anechoic chambers( SAC) with low reflections.
