Dissonances in carillon chords

The sound quality of the carillons may pose problems, the more so, as carillon music has often a large, sometimes involuntary, audience. Particular carillon chords, although composed from well tuned bells, produce more or less dissonant sounds. A performed computer analysis of such chords, recorded in the St. Catherine Carillon belfry in Gda\'nsk, shows origins of dissonances and characterizes their properties. Some possible solutions leading to an enhancement of quality of carillon chords are discussed.