Hearing protections Questions and answers Functioning of the acoustic filter in the hearing protections
Discover the new generation of COTRAL moulded hearing protectionsAs you are aware, noise and deafness are major risks on an occupational level. In France, 1 of every 3 employees is exposed to harmful noises on a daily basis. 7% of the employees are subject to noises exceeding 85 dB(A) for more than 20h/week. |
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What is an acoustic filter?What is an acoustic filter? Why is it an important element of the COTRAL customised hearing protections? What is an acoustic filter?
COTRAL Laboratory have a range of 8 filters for the COTRAL Micra 3D model, 6 filters for the COTRAL Premium model and 3 filters for the Original White model. All the filters are tested and EC-certified and offer a selective attenuation according to the frequency bands in order to adapt to the acoustic environments encountered in all industrial and agricultural fields... Because attentive listening is worth more than any lengthy discourse...
Noise recorded in a printing works Without protections
The same noise attenuated by a hearing protection and an acoustic filter: XS5
XS21
XS35
XSP
FT19
Why use an acoustic filter?In an industrial environment, the aim is to protect users by reducing noise to within 80 dB(A) while ensuring better hearing of the voice.Each filter from COTRAL Laboratory has specific lengths and internal and external diameters; hence, it is possible to fit the filter that allows the best attenuation / communication ratio. |
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