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A bell is regarded as having a good tone when it is "in tune with itself". [24] In western bell founding, this is known as "harmonic tuning" of a bell, which results in the bell's strongest harmonics being in harmony with each other and the strike note. This produces the brightest and purest sound, which is the attractive sound of a good bell.
The sound made by a bell rung full-circle has two unique subtle features: rapid strike decay and the Doppler effect.. Because the clapper strikes the bell as it rises to the mouth upwards position, it rests against the bell's soundbow after the strike.
Bell ringing at St Botolph's Aldgate in the City of London. A "ring of bells" is the name bell ringers give to a set of bells hung for English full circle ringing.The term "peal of bells" is often used, though peal also refers to a change ringing performance of more than about 5,000 changes.
Bellfounding is the casting and tuning of large bronze bells in a foundry for use such as in churches, clock towers and public buildings, either to signify the time or an event, or as a musical carillon or chime. Large bells are made by casting bell metal in moulds designed for their intended musical pitches.
A bell that is up is dangerous to be near, and only expert ringers should ever contemplate entering a bell chamber or touching a rope when the bells are up. To raise a bell, the ringer pulls on the rope and starts the bell swinging. Each time the bell swings the ringer adds a little more energy to the system, similar to pushing a child's swing.
The low tone and deep resonance of the bell allow the sound to carry over great distances; a large bonshō can be heard up to 32 kilometres (20 miles) away on a clear day. [1] The pitch of the bell is carefully judged by its creators, and a difference of a single hertz in the fundamental frequency can require that the bell be recast from ...
Finally, as the sound of the bell ebbs, the slowly decaying hum tone (an octave below the prime, see subharmonic) lingers on." [ 3 ] "When a bell is properly struck, the first note that prominently attracts the attention of the ear is what is known as the strike note, tap note, or fundamental, this is what we call the note of the bell.
However it does not have the same sound as full circle ringing due to the absence of the doppler effect derived from bell rotation and the lack of a damping effect of the clapper after each strike. It requires only one person to operate. Each hammer is connected by a rope to a fixed frame in the bell-ringing room.
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