A way to analyse the amplitude of a sound source?

[Arizard]

I'm looking to make my title screen a bit more reactive, so I was wondering if there was a way to analyse the amplitude of a sound source so that i can modify size/position/rotation of things on my title screen. I've read about using a fourier series to visualise an equaliser, but I'm not good enough at maths to understand them, and since I only want the overall amplitude and not the individual frequencies, wouldn't it be simpler? I can't seem to find anything on the wiki (love.audio and love.sound).

Any help is very appreciated