did you look into the msp help?: spectroscope~.maxhelp
you can work with that maybe, but I guess there are a lot of other examples in the forum.
A nice one, maybe not what you are looking for though, is jitter-recepies • book 1, #5
@Giorgio, I did look at the help, yes, but to no avail.
I seen ‘timbre’ analysis is quite technical – http://williambrent.conflations.com/pages/research.html.. I will have a go down this route; it seems very interesting – once I get my head around it ! :)
I will also have a look at the help you recommend, thank you