Frequency responses of wood for musical instruments in relation to the vibrational properties
Frequency responses of wood for musical instruments in relation to the vibrational properties
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乐器木材的频率响应与振动特性的关系
DOI：
10.1250/ast.17.183
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发表时间：
1996
期刊：
影响因子：
--
通讯作者：
T. Ono
中科院分区：
文献类型：
--
作者：
T. Ono
测量了几种木材中具有规则纹理平面的方板的频率响应、杨氏模量、剪切模量和内摩擦力，其中包括用于弦乐器顶板的西特卡云杉和用于背板的枫木，以及用于塑料丙烯酸树脂和金属铝的方板。西特卡杉的响应频率最高，声功率级较高，声级变化最大，随着频率增加，声级下降最大，在1kHz以上，在中频范围内具有高级响应模式。相比之下，枫树的响应模式整体较低且几乎平坦。为了具有这样的频率响应，顶板木材不仅需要在纹理方向上具有优异的振动特性，而且在规则纹理平面上具有强的各向异性，并且背板木材具有与顶板木材相反的特性。
The frequency response and the Young's modulus, shear modulus and internal friction were measured for square boards with regularly-grained planes in several kinds of wood, which included Sitka spruce for stringed instrument top plates and maple for back plates, and for square boards in an acrylic resin of plastics and an aluminum of metals. The Sitkaspruce was the highest in response frequency, higher in sound power level, the greatest, in level variation and the greatest in level drop with increasing frequencies above 1 kHz, and it had the response pattern of high level in the range of middle frequencies. In contrast, the maple had the response pattern of low and almost flat level as a whole. In order to havesuch frequency responses, it was necessary that wood for top plates had not only the excellent vibrational properties in the direction along grain but also the strong anisotropyin regularly-grained plane, and that wood for back plates had the characteristics opposite to those of wood for top plates.