Why do SNR ratings tend to be about 3 dB higher than NRR ratings? I.e., what difference(s) in the testing procedures account for this gap?

1. Is SNR the same as NRR?
2. What is the highest SNR rating?
3. What is the difference between NRR and dB?
4. What does SNR rating mean?

Is SNR the same as NRR?

Summary. Put simply, SNR and NRR are two standards for measuring the attenuation of a hearing protection product. SNR is the EU standard, while NRR is the US standard. ... It's important to consider the noise environment that the protection will be used in, and how well the hearing protection product is fitted.

What is the highest SNR rating?

About SNR Ratings

So, this means if the environment you're in has a noise level of 80 decibels, the noise reduction of the ear plugs puts the noise level at roughly 55 dB. The highest SNR ratings available at the moment are in the high 30s.

What is the difference between NRR and dB?

When hearing protection is worn, your level of exposure to noise is based on the NRR rating of the protection device being used. ... This means that if you are at a rock concert with a level of noise exposure at 100 dB and you are wearing a hearing protector with an NRR 33 dB, your new level of noise exposure is 87 dB.

What does SNR rating mean?

A Single Number Rating (SNR) is a specification used to determine protection levels given by all hearing protection and provides an easy reference to compare the different types of hearing protection. The higher the SNR level the more protection the product gives in a noisy environment.