Day-night time average degree, DNL or LDN: This measurement assesses the cumulative exposure to sound for any 24-hour time period (Leq around 24 hrs) on the yr, having a ten dB(A) penalty or fat included to nighttime noise measurements given the improved sensitivity to noise during the night time. [thirteen] https://windowinsulation41727.bloguerosa.com/31123091/considerations-to-know-about-acoustic-performance