Google: Noise Reduction Rating (NRR)
YES!! Too much hearing protection in the shop is not necessarily a good thing when you forget to turn a machine off. DAMHIKT.
Considering what I hear blasted from this vehicle and that at the stop lights, you ain't missin' much!
Noise Reduction Rating (usually in decibels)
www.protectear.com
This thread is doing very well! Thanks for these links.This might be more what Westpacx3 is asking: Understanding Noise Reduction Ratings (NRR) - Listen Technologies
Here's a very important caveat about hearing protection noise-ratings.
"If subject fit data are not available, NIOSH recommends derating hearing protectors by a factor that corresponds to the available real-world data. Specifically, NIOSH recommends that the labeled NRRs be derated as follows:
- Earmuffs – Subtract 25% from the manufacturer’s labeled NRR
- Formable earplugs – Subtract 50% from the manufacturer’s labeled NRR
- All other earplugs – Subtract 70% from the manufacturers labeled NRR"
NRR Rating - Custom Protect Ear
What is Noise Reduction Rating A noise reduction rating indicates the level of sound that earplugs block out when used without simultaneous noise-blocking objects. This rating applies only to earplugs and read more
Grossly speaking, it mirrors my experience with earplug-style protectors: they are very sensitive to fitment. Earmuff style much less so.
-Mark
don't work well with glasses and safety glasses.
Thanks Mark, exactly what I was looking for but the other links helped as well. I used to work on aircraft and now my daily work deals with noise as well where headsets are fine and now with woodworking where I put it on and take it off frequently I feel I need good protection but convenient and manageable so I will use it for the 1 or 2 cuts.This might be more what Westpacx3 is asking: Understanding Noise Reduction Ratings (NRR) - Listen Technologies
Here's a very important caveat about hearing protection noise-ratings.
"If subject fit data are not available, NIOSH recommends derating hearing protectors by a factor that corresponds to the available real-world data. Specifically, NIOSH recommends that the labeled NRRs be derated as follows:
- Earmuffs – Subtract 25% from the manufacturer’s labeled NRR
- Formable earplugs – Subtract 50% from the manufacturer’s labeled NRR
- All other earplugs – Subtract 70% from the manufacturers labeled NRR"
NRR Rating - Custom Protect Ear
What is Noise Reduction Rating A noise reduction rating indicates the level of sound that earplugs block out when used without simultaneous noise-blocking objects. This rating applies only to earplugs and read more
Grossly speaking, it mirrors my experience with earplug-style protectors: they are very sensitive to fitment. Earmuff style much less so.
-Mark
I would but I use my hand too much at work and I always tend to over grip stuff and it stresses my forearm and neck. I do fully appreciate those who can create with the hand tool.. hope it's not a lost art
The NRR number is a measure of how well noise is blocked across the hearing spectrum. The number is logarithmic. The higher the number, the more noise is reduced before it gets to the hearing part of your ear. When I talked to the safety folks at work about a combo safety glasses with noise-reducing ear plugs (25 NRR), they told me that they did not consider anything lower than 27 for use in high noise environments at work.
www.leevalley.com
I also have an iso tune brand headset. I don't recall the model, It came from klingspor. They are Bluetooth, fit great and work well until I put on safety glasses and open up the leading edge of the ear foam. I only use the Bluetooth part while on the mower. However I figured to find something maybe not as good but good enough that not as bulky, and can hang on the neck when not used that blocks enough. There maybe no great option and right now it's a wishlist item. I always use them but at times pull the eye protection off so I get better noise protection which is not real smart.The NRR number is a measure of how well noise is blocked across the hearing spectrum. The number is logarithmic. The higher the number, the more noise is reduced before it gets to the hearing part of your ear. When I talked to the safety folks at work about a combo safety glasses with noise-reducing ear plugs (25 NRR), they told me that they did not consider anything lower than 27 for use in high noise environments at work.
That NRR of 30 linked above is probably the best that I have seen. It looks to be a passive noise attenuation system. So, the concerns raised above about possibly blocking too much of the noises that we need to hear in the shop (like your wife calling you to dinner) could be a consideration.
Active noise protection systems use a microphone to sense the noise environment and augment the passive noise reduction with active (out of phase) noise cancellation. Active systems can be tuned by the manufacturer to not interfere with some frequencies (like human voices) or couple to your phone or a music source. One should not assume that any given manufacturer does that without doing some research first, though.
I ordered a set of the ISOtunes IT-03 PRO Earbud Hearing Protectors from Lee Valley when they had a Special Buy on them a few weeks ago. I haven't had a chance to test them out yet.
ISOtunes IT-03 PRO Earbud Hearing Protectors - Lee Valley Tools
I replace mine when then the foam inside the cups starts disintegrating or gets heavily soiled. I have replaced the outer seals upon occasion as they tend to wear out or not seal more rapidly than the inner foam. Pelitor does have replacement outer seals.
