Originally Posted by Jim Galbally

whilst i cant remember exactly how it works (and i never actually finished A level physics... lol) i im pretty sure the conculsion you're coming to of 1+1=2 is not correct


loudness is directly proportional to amplitude
i.e L α a

Wheras intensity is prototional to the square of the amplitude
i.e I α a²

1) L= ka ------> therefore a=L/k
2) I = ka²
Substituting a in 1) into 2) we get
I = k (L/k)²
I = k * (L² / k²)
I = L² / k
So this means that intensity is inversly proportional the the square of the loudness i. e. I α 1/L²

α - proportionality sign
k- constant ( inserted to get rid of the proportionality sign)

Hope this helps!






copy+paste FTW!