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Tested according to ANSI Specs S3.19-1974
The level of noise entering a person's ear, when hearing protector is worn as directed, is closely approximated by the difference between the A-weighted environmental noise level and the NRR.
Attenuation Chart (ANSI S3.19-1974) Frequency 125 250 500 1000 2000 3150 4000 6300 8000 Mean Attenuation (dB) 35.3 33.4 38.7 37.7 39.7 44.2 45.0 48.2 48.2 Standard Deviation (dB) 3.9 2.9 3.5 2.4 3.1 4.5 4.0 3.6 3.1Example:
Noise Reduction Rating: 32 Decibels (When used as directed)
The range of noise reduction ratings for existing hearing protectors is approximately 0 to 30 (Higher numbers denote greater effectiveness).
手軽な使用法
最良の結果を得るには、耳栓を適切に挿入してください。
挿入の練習を行うことをお勧めします。hearos.comにアクセスし、取り付け説明ビデオをご覧ください。数回使用した後、または耳栓に汚れや耳あかが蓄積したら、すぐに製品をお捨てください。