English to Czech Tech/Engineering Electronics / Elect Eng měření hluku dozimetry

Context: "Quest Technologies Q-300 noise dosimeters were used for all noise sampling. Each dosimeter was set to use an 80 dBA threshold, 90 dBA criterion, 5 dbA exchange rate, and slow response as per the OSHA Hearing Conservation standard".

I have found a definition of exchange rate: "Exchange rate refers to how the sound energy is averaged over time"
(http://www.quest-technologies.com/FAQS/noise/noise_faq.htm)