Day-evening regular amount, DNL or LDN: This measurement assesses the cumulative publicity to sound to get a 24-hour time period (Leq about 24 hrs) from the yr, that has a ten dB(A) penalty or weight added to nighttime noise measurements given the amplified sensitivity to noise at nighttime. from about https://homecomfort71355.techionblog.com/31944073/considerations-to-know-about-acoustic-performance