Our ear perceives higher frequencies (between 1 and 5 KHz) with much greater sensitivity than low frequencies. This natural resonance of our external ear’s conical shape amplifies acute noise from 10 to 15 dB on average.


HearingProTech is a department of Arta Group. Its mission is to perform and disseminate research, analyses, and tools to aid in the selection of personal hearing protection devices. Composed of technical and scientific experts, HearingProTech aims to advance knowledge in this area and make it more easily accessible.