I'm working on rolling noise emissions from cars. I have a model for rolling noise emissions which gives me sound pressure levels in third octave bands (29 in total, between 20Hz and 8kHz), depending on vehicle speed, and road/tyre combinaison.
In blue, the spectrum of the recording using Welch's method, and in red, the levels i'd like to reach.
What kind of methods can i use in this particular case?
Thank you for your help!