Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada.
J Acoust Soc Am. 2012 Jan;131(1):837-43. doi: 10.1121/1.3651223.
The "gothic" style of harp was popular across most of Europe from the late medieval period to the Renaissance. These harps have a one-piece, longitudinally oriented hardwood soundboard, as opposed to the transverse-oriented bonded softwood structure on a modern instrument. In addition, the one-piece back is flexible, whereas the back of a modern instrument is a rigid molded shell. To study the gothic harp, one was constructed from plans created by the Boston Museum of Fine Arts from a late German model in their collection. The vibrational behaviors of the soundboard and soundbox were measured at various stages of construction. The completed instrument was subjected to modal analysis and radiativity measurements. The sound radiation is dominated by two breathing modes at 188 and 273 Hz, each with strong motion of the back, and modes around 350 Hz. Taken together, these modes function like the A0/T1 resonance pairs seen in the soundboxes of other instruments, and a comparison is made with the guitar. Also observed is that as the frequency increases, radiation is emitted from higher up the soundboard, and from higher soundholes. This feature has been observed in other harps, and is a consequence of the harp family's unique geometry.
“哥特式”竖琴在从中世纪晚期到文艺复兴时期的欧洲大部分地区都很流行。这些竖琴的琴身采用一块整体的、纵向定向的硬木音板，而现代乐器则采用横向定向的胶合软木结构。此外，整体的背板是柔性的，而现代乐器的背板是刚性的模制外壳。为了研究哥特式竖琴，我们根据波士顿美术博物馆从其收藏的一件晚期德国模型创建的图纸，制作了一件竖琴。在不同的制作阶段测量了音板和共鸣箱的振动行为。完成的乐器进行了模态分析和辐射测量。声音辐射由 188 和 273 Hz 的两个呼吸模式主导，每个模式都有背板的强烈运动，还有大约 350 Hz 的模式。这些模式共同作用，就像其他乐器的音箱中看到的 A0/T1 共振对一样，并且与吉他进行了比较。还观察到的是，随着频率的增加，辐射从音板的较高位置和较高的音孔发出。在其他竖琴中也观察到了这一特征，这是竖琴家族独特的几何形状的结果。
