INFLUENCE OF A TOROIDAL BEND ON WIND INSTRUMENT TUNING
INFLUENCE OF A TOROIDAL BEND ON WIND INSTRUMENT TUNING
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环形弯曲对管乐器调音的影响
DOI：
10.1121/1.424374
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发表时间：
1998
影响因子：
2.4
通讯作者：
C. Nederveen
中科院分区：
文献类型：
--
作者：
C. Nederveen
在圆柱形管乐器的环形弯曲中，具有与圆柱形部分相同的横截面，减小了纵波的惯性。这引起谐振频率的变化。这种变化的幅度取决于弯曲的长度和锐度以及它在声场中的位置。过渡到气缸提供了额外的惯性校正。本研究比较了文献中的已知结果，并采用分析和数值方法增加了新的事实。被认为是在文献中报道的测量和理论之间的差异的可能原因。通过对几种管段间环形弯曲的测量，验证了理论的正确性。对圆环和管道系统其余部分之间的直径差异进行了校正。在实验不确定度范围内，发现与理论的一致性令人满意。本研究中获得的结果确定了弯曲中的直径减小可以补偿...
In a toroidal bend in a cylindrical wind instrument, with the same cross section as the cylindrical part, the inertance for longitudinal waves is reduced. This induces a change in the resonance frequency. The magnitude of this change depends on the length and the sharpness of the bend and on its position in the sound field. A transition to a cylinder gives an additional inertance correction. The present study compares known results from literature and adds new facts, employing analytical and numerical methods. Possible causes of the discrepancies between measurements and theory as reported in the literature are considered. The theory was verified by measurements on some toroidal bends in between cylindrical tube pieces. Corrections were applied for diameter differences between the torus and the rest of the pipe system. Within experimental uncertainty, a satisfactory correspondence with theory was found. The results obtained in the present study determine which diameter reduction in the bend can compensate...