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Description
SNR : 24 dB H : 25 M : 20 L : 19 Hz Fréquence 125 250 500 1000 2000 4000 8000 dB Affaiblissement 22.5 21.8 20.2 23.2 29.7 35.9 40.2 dB Ecart type 3.2 4.1 3.3 3.8 5.1 4.3 5.6 Protection effective 19.3 17.8 16.9 19.4 24.6 31.6 34.6
