Frequently Asked Questions

Click on a question below to view the answers.

What attenuation levels does a Noise-Ban™ offer?


What is unique about the filters H.A.S.S. Industrial uses?

They are adjustable, which means they can be set for various noise areas. If hearing is over-protected, the user will struggle to hear instructions or follow a conversation. In the case of under-protection, the user could suffer from a noise-induced hearing loss over the long-term. It is therefore important that a balance be achieved between attenuation and communication.

What is a leak-tight test and why is it important?

A leak-tight test is a test of airflow. We use airflow to make sure that no air can flow past the earpiece in the ear canal. We do a leak-tight test to ensure that the earpiece fits 100% in the ear canal, so that the only sound that goes through the ear canal, does so through the filter.

Why annual monitoring, and not calibration?

Calibration only applies to electronic equipment. While our test equipment is calibrated regularly, no hearing protection device needs to be calibrated. Rather, the device is monitored for the effective functioning of the product in the user’s ear, by performing a leak-tight check. The only reason for adjusting the filter would be if the person has subsequently moved to a different noise environment.

At what noise level does hearing loss occur?

Both the amount of noise and the length of time you are exposed to the noise determine its ability to damage your hearing. Noise levels are measured in decibels (dB). The higher the decibel level, the louder the noise. Sounds louder than 80 decibels are considered potentially hazardous. The noise chart below gives an idea of average decibel levels for everyday sounds around you.


150 dB = rock music peak
140 dB = firearms, air raid siren, jet engine
130 dB = jackhammer
120 dB = jet plane take-off, amplified rock music at 1-2 m, car stereo, band practice.

Extremely loud:

110 dB = rock music, model airplane
106 dB = timpani and bass drum rolls
100 dB = snowmobile, chain saw, pneumatic drill
90 dB = lawnmower, shop tools, truck traffic, subway

Very loud:

80 dB = alarm clock, busy street
70 dB = busy traffic, vacuum cleaner
60 dB = conversation, dishwasher


50 dB = moderate rainfall
40 dB = quiet room


30 dB = whisper, quiet library