Hearing is undoubtedly the most important organ of perception in humans. Our sense of hearing consciously or unconsciously conveys a multitude of impressions around us. It makes us aware of dangers, helps us to orientate ourselves and enables us to convey feelings such as safety.

Our products are measured in the laboratory for acoustics and vibrations at the Swiss Federal Institute of Metrology and subsequently certified by the Federal Office for Civil Protection. The measurements are carried out in an anechoic chamber, the boundary surfaces of which are such that almost no sound (echo) is reflected. Other terms are anechoic or anechoic chamber.

Anechoic chambers are used to determine the sound power of devices, machines and vehicles. Furthermore, such chambers are used for the calibration of measuring microphones and other electroacoustic transducers. For objective measurement and assessment of sound and vibrations, sufficiently accurate reference values and reliable measuring instruments are needed. Both are ensured by the activities of the METAS Acoustics and Vibration Laboratory. Our products are certified and meet all the requirements of the Federal Office for Civil Protection (FOCP). Certification mark Federal Office for Civil Protection: BZS AL 17-801

Below a picture of the anechoic chamber of Kockum Sonics in Malmö, Sweden from 1982.

Sources Pictures:

Freepik

Own Source