Bell 15 / 31Carillon2023
Cassia
DWG 23-493Drawn from the working profile. Not to print scale.
01Bell details
Carillon bells are tuned more tightly than ring bells: the tierce of Cassia sits within two cents of a pure minor third.
- Commission
- Bass bell of a carillon
- Place
- Carillon of the Library, Norwell
- Inscription
- CASSIA
- Metal
- Bell metal, 78% copper, 22% tin
- Mould
- Loam, swept by strickle
- Tuning
- True-harmonic, five partials
02Tuning record644.6 Hz nominal
| Partial | Ratio | Measured | Off | Deviation |
|---|---|---|---|---|
| Hum | ·25 | 160.6 Hz | -6¢ | |
| Prime | ·5 | 323.2 Hz | +5¢ | |
| Tierce | ·6 | 386.8 Hz | 0¢ | |
| Quint | ·75 | 482.9 Hz | -2¢ | |
| Nominal | 1 | 644.6 Hz | 0¢ |
Ratios to the nominal. Cents are hundredths of a semitone; within ±6¢ most ears hear the bell as in tune.
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