Day-night time ordinary amount, DNL or LDN: This measurement assesses the cumulative publicity to sound for the 24-hour period (Leq in excess of 24 hrs) on the 12 months, with a 10 dB(A) penalty or body weight extra to nighttime noise measurements supplied the amplified sensitivity to noise at nighttime. https://andymbqhs.blogdiloz.com/31261837/a-review-of-acoustic-performance