DESIGN OF CHIMES TO PRODUCE CONSONANT, NON-HARMONIC SCALES
Thin, cylindrical metal chimes can be used to play in a variety of scales requiring non-harmonic spectra The speclrum Il'quired for the chimes to have collSOIllllltintervals in a given non-harmonic ocale can be detertnined acoord ingtoamethoddevelopedby Sethares,based on the theory of dissonance proposed by Plomp andLevelt First order perturbation theory was appHedto eontrol the frequencies of the first six modes ofa thin, cylindrical metal chime by perturbations to the chime radius. The resultant chime profile was then refined using finite eiemellt methods. Twa alwninium chimes manufactured with this optimised profile demonstrated superior musical peIformance compared with unperturbed thin cylinders.