| 古编钟的声学特性 |
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| 引用本文： | 陈通, 郑大瑞. 古编钟的声学特性[J]. 声学学报, 1980, 5(3): 161-171. DOI: 10.15949/j.cnki.0371-0025.1980.03.001 |
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| 作者姓名： | 陈通 郑大瑞 |
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| 作者单位： | 中国科学院声学研究所(陈通)，中国科学院声学研究所(郑大瑞) |
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| 摘 要： | 编钟是中国古代的重要乐器。通过对模型编钟振动方式、共振频率和声频谱的测量来分析编钟的声学特性,证实了编钟是发两个基音乐音的乐器。阐明了决定敲钟位置和古人调音方法的声学原理。用FFT做实际和模型编钟声的短时频谱分析。应用了信号处理中线性预测等方法来分析编钟声。实验表明用线性预测法计算基音频率是有足够高的准确度的。
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| 收稿时间： | 1980-03-16 |
ACOUSTIC CHARACTERISTICS OF ANCIENT CHIME BELLS |
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| CHEN Tong, ZHENG Da-rui. ACOUSTIC CHARACTERISTICS OF ANCIENT CHIME BELLS[J]. ACTA ACUSTICA, 1980, 5(3): 161-171. DOI: 10.15949/j.cnki.0371-0025.1980.03.001 |
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| Authors: | CHEN Tong ZHENG Da-rui |
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| Abstract: | Chime bells are the important musical instruments in ancient China. The acoustic characteristics of chime bells have been studied by the measurements of vibration modes and the power spectra of the bell sound. It is found that each of the chime bells has two pitches of sound depending on the striking positions on the bell. The measurement of vibration modes shows that at these two pitch frequencies the modes of vibration are similiar, but the positions of nodal lines are different. Exciting the bell at steady-state condition, the natural frequencies from which the pitch frequencies can be determined are measured. The method of tuning as used by the ancients is paring off the inner surface near bell edge along the nodal lines. This is a reasonable method for separate tuning of each tone. The short-time sound spectra of chime bells are measured by the use of FPT. From the spectrum analysis tone quality of bell is obtained. The sound of chime bell can also be analyzed by the method of linear prediction used in signal processing. The accuracy of pitch frequency obained by this method is high. |
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