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WebProtectors that reduce the level at the ear to below 70 dB should be avoided, since this … WebMay 25, 2024 · To use SNR, take your measured noise level and simply subtract the SNR figure for the hearing protector. There is one mildly complicating factor in that the ‘noise level’ is the average dB(C), not the average dB(A), peak dB(A) or peak dB(C).If that sounds like gibberish then what I’m waffling about is that you need to look at your average noise … northern powergrid alix house
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