for a given test signal, the mean difference in decibels between the threshold of hearing with and without the hearing protector in place Note 1 to entry: Measured in accordance with EN ISO 4869-1:2018 for a panel of test subjects.
за дати испитни сигнал, средња вредност разлике у децибелима прага чујности са и без штитника за слух на месту