Coventry Cathedral has a fine peal of twelve bells (plus two semitones) cast by Gillett and Johnston in 1927 but not hung for ringing until 1986 because of structural problems with the tower. Coventry Cathedral was completely destroyed in an air raid on the night of 14/15 November 1940, apart from the tower, but the […]
Unlike Simpson’s first article, this article only has two figures – a most florid title ON BELL TONES incorporating a deluge of bells and several cherubs (omitted), and a figure showing the profile of a bell and tuning points, incorporated below. The text of the paper is reproduced in its entirety. The Pall Mall Magazine […]
This paper, as published in The Pall Mall Magazine, was quite a handsome affair, and included a number of pictures which have not been included below. They were: A Bell by Messrs. Taylor, of Loughborough; St Mary’s Church, Stoke-by-Wayland (sic); Stoke-by-Wayland (sic) Church, Suffolk; Church of SS. Peter and Paul, Lavenham; Peal cast at Louvain […]
This article provides a fascinating insight into an early scientific investigations into bell vibrations and sound. In it Rayleigh explains the phenomenon of doublets, though they are not named as such; shows that the strike note of a church bell is an octave below the nominal; and investigates the vibration modes of the five lowest […]
Here are some classic papers on bell tuning, plus a talk given by an American founder and an account of the Coventry court case. Many more papers are available in Rossing’s book Acoustics of Bells. The papers here have been selected because they show the historical development of understanding, and are out of copyright. On Bells, […]
Almost all musical instruments (such as pianos, organs, orchestral instruments and the human voice) have sounds that contain a range of frequencies f, 2f, 3f, 4f and so on where f is the lowest frequency in the sound. The pitch or note we asssign to the sound corresponds to the frequency f. Frequencies with this regular arrangement are called harmonic. […]
The first page in this series (What note do we hear when a bell rings?) explains briefly that the upper partials in bells have a significant influence on the note we hear and the general timbre of a bell. This article goes into more detail on the musical relationship between these partials. The first figure […]
It is now quite easy (using Wavanal or a general purpose spectrum analysis program) to ascertain the partial frequencies for church bells from recordings of them. Interpretation of these tuning figures is a different matter. Research recently completed as part of my PhD has shed new light on how the sound quality of bells is […]