What is Day-Night Average Sound Level (DNL or Ldn)?

DNL (Ldn) stands for Day-Night Average Sound Level and is used to describe the cumulative noise exposure during an average annual day. Ldn does not represent the sound level heard at any particular time, but rather represents the total sound exposure. More.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.