Journal ArticleDOI
Modes of vibration and sound radiation from tuned handbells
Reads0
Chats0
TLDR
The tonal quality of a handbell depends upon the clapper strike point, the hardness of the clappers, and the force of the blow in addition to the design and construction of the bell itself as discussed by the authors.Abstract:
Although handbells can vibrate in many different modes, only the two modes of lowest frequency are normally tuned by the bellcrafters. The frequency of the second mode is generally tuned to be three times that of the first. Each of these modes also radiates sound at twice the modal frequency, however, so that the radiated sound spectrum includes the second and sixth harmonics as well as the first and third. The amplitude of the second harmonic partial is proportional to the amplitude of the fundamental, and a similar relationship relates the sixth harmonic to the third. The first and third harmonics are radiated most strongly at right angles to the bell axis; the second and sixth harmonics are maximum along the axis. Small asymmetries in the bell often create warble due to beats between the two components of a split modal doublet. The tonal quality of a handbell depends upon the clapper strike point, the hardness of the clapper, and the force of the blow in addition to the design and construction of the bell itself.read more
Citations
More filters
Journal ArticleDOI
Vibrations of bells
Thomas D. Rossing,R. Perrin +1 more
TL;DR: In this article, the forms and vibrational modes of carillon bells and handbells are discussed and compared, and different timbres are traced to the differences in the vibrational behaviour and the resulting spectra of partial tones.
Journal ArticleDOI
Acoustics of Eastern and Western bells, old and new
TL;DR: In this paper, a new type of carillon carillon bell has been developed in which the traditional minor third partial is replaced by a major third partial, thus changing the timbre of the bell.
Journal ArticleDOI
The design of bells with harmonic overtones.
TL;DR: A series of bells has been designed that contains up to seven partial frequencies in the harmonic series beginning at the fundamental frequency by choosing geometries for finite-element analysis models in which as many purely circumferential bending modes as possible occurred at frequencies below any mode with an axial ring node.
Journal ArticleDOI
The resonant excitation of a wineglass using positive feedback with optical sensing
TL;DR: In this article, the authors describe an apparatus that can sense the vibration of a wineglass through the jitter induced on a laser beam reflected from the glass wall, which can be used to highlight some of the nonlinear aspects of the resonance.