Yes, but I suppose the general shape of a violin, curvy, pinched waist, bowed top and bottom surfaces, already avoids those kind of overly simple/concentrated r

Yes, but I suppose the general shape of a violin, curvy, pinched waist, bowed top and bottom surfaces, already avoids those kind of overly simple/concentrated resonances. On a side note, I wonder how much changing any of these shape factors affect the sound? Which are most critical? What happens without the pinched waist, or if it is made even narrower?