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Figure 4: Individual, binaural REAT results of ER-15 earplugs (in dB). Sound field measurements with and without hearing protectors were performed in 5 dB steps. Consequently, the REAT values were calculated in 5 dB steps

Figure 4: Individual, binaural REAT results of ER-15 earplugs (in dB). Sound field measurements with and without hearing protectors were performed in 5 dB steps. Consequently, the REAT values were calculated in 5 dB steps