I think so. A good tone starts with the attack, blooms, then decays
slowly and gracefully. A wolf tone booms instantly then then dies a weak
death without much sustain.
My wolf tone is on the A; maybe centered a few cents below an A.
Classical guitars typically have their wolf tone between G and A.
I think the reason it's noticed when fretting the low G is because the
fundamental frequency of the standing wave is the fundamental of the low
G. So, the high G alone only rings at a fraction (1/4) of the standing
wave frequency, which corresponds to a harmonic of the fundamental
frequency, so fretting the low G allows sympathetic ringing of that
note, sounding the fundamental of the standing wave G.
Or maybe the fundamental of the standing wave is the mid G (open 3rd
string). In this case the high G is 1/2 of the fundamental, but the low
G hits the standing wave with it's first overtone.
Anyway, this is all just an educated guess. I might have gotten my
fractions backwards. <shrug> I need another cup of coffee.
--
Matt