Yes Commando riders miss a lot of the impressing they are making for others. Took me awhile to hear mine or another one I wasn't on - to get idea why my new cycling friend out hear would say they knew it was my Norton a couple miles away just rolling with traffic. Your daughter caught the sound about best I've heard. I like the easy no strain no hurt deep soft barks normal throttled Commandos sound more than the WOT in the long run, but a little of the loud stuff is kool too.
I finally got to see what make the Norton head ringing bat calling sounds, its the strike of the rock on valve stem making the Whole head ring like a bell! It only takes a very light rocker motion to ting a ring, Nothing I tired to muffle by hard touch, valve stem, spring, rocker arm or areas around head itself made any difference to the clear ring.