The next interesting point is that these bells typically
have very quiet tierces
- look at the intensity profiles compared with those at tewkesbury.
It does affect the timbre - bells with a major tierce have a clearly different quality than those with
minor tierces.
Tierces in older bells
occur through accident rather than design.
Even in this peal, taylors were not
tuning the tierce
to the theoretical value.
In bell founding these partials have acquired their own names of hum tone,
prime, tierce, quint, and nominal.
Tierce rank
in the tenor octave but this was a hangover of the 18th century english organ.
One suspects these
major tierces
in older bells occur through accident rather than design.
From the chart, one can see that the
nominal, tierce
and prime were barely touched, the hum lowered a little.
Tierce mixture
of only three ranks.
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