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In addition to the Great Bell of the Yongle period,there are more than thirty ancient bells at the Templeof Great Bell in the west outskrit of Beijing.Most of the them were cast in the Ming Dynasty and Qing Dynasty.Only a few were cast in the Song and Yuan Dynasties.The heights of the bells from 79cm to 210cm andthe corresponding weights from 114kg to 3108kg.The largest and the samllest opening radius are 84cm and31.5cm respectively. In this paper the dynamic spectra of bell sound,beat frequencies and sound decay characteristics havebeen studied,The relationshps between fundamental frequeney and bell shape are discussed.For bells withsimilar shape,fundamental frequency is approximately proportional to T_0/R_0~2,where R_0 is the openingradius of bell and T_0 is the thickness of bell rim.The subjective appraisal of the sound quality of bell sound ispresented.
In addition to the Great Bell of the Yongle period, there are more than thirty ancient bells at the Temple of Great Bell in the west outskrit of Beijing.Most of the them were cast in the Ming Dynasty and Qing Dynasty.Only a few were cast in the Song and Yuan Dynasties. The heights of the bells from 79cm to 210cm and the corresponding weights from 114kg to 3108kg. Large and the samllest opening radius are 84cm and 31.5cm respectively. In this paper the dynamic spectra of bell sound, beat frequencies and sound decay characteristics havebeen studied, The relationshps between fundamental frequeney and bell shape are discussed. For bells with similar shape, fundamental frequency is approximately proportional to T_0 / R_0 ~ 2, where R_0 is the opening radius of bell and T_0 is the thickness of bell rim. The subjective appraisal of the sound quality of bell sound ispresented.