Vibrational modes of pyen‐gyoung (Korean chime stone) and pyeon‐jong (Korean chime bell)

Pyeon‐gyoung, chime stone, and Pyeon‐jong, chime bell, have been allocated as a set of instruments in Korean traditional court music and Confucian ceremony. Pyeon‐gyoung is a set of 16 L‐shaped chime stones covering one and one‐third octaves and pyeon‐joung is a set of 16 almond‐shaped bronze chime bells, one octave lower than pyeon‐gyoung. The nominal frequencies increase with the thickness of the stones and bells. The vibrational mode frequencies in a pyeon‐gyoung and pyeon‐jong have been studied. The frequency ratios of the modes in stone chimes are smaller than those of marimbas. The modal shapes of the lowest and highest stones, mapped by TV holography, by scanning with an accelerometer and animated by STAR, are shown.