Chair of Acoustic and Haptic Engineering, TU Dresden, 01062, Dresden, Germany.
Pacific Rim Tonewoods, Concrete, Washington 98237, USA.
J Acoust Soc Am. 2019 Oct;146(4):2608. doi: 10.1121/1.5129395.
The wood of the spruce tree (Picea spp.) has been valued for centuries as an ideal soundboard for stringed instruments due to its material acoustic properties. There is large variability in these properties between individual trees of the same species and even within an individual log. It stands to reason that this variability would produce audible differences in the sound quality of otherwise identical musical instruments. Furthermore, there may be a suite of physical characteristics of the soundboard that would result in optimal sound quality for a given design. Nine steel-string guitars of the same model were produced. The guitars varied only in two parameters: the density and Young's modulus of the soundboard and bracewood. This variability was representative of the range of wood currently produced by Pacific Rim Tonewoods. A short music sequence was used for a pairwise preference evaluation in a listening test. The results suggested that, for this particular model (the Taylor 814ce Grand Auditorium), the low density and Young's modulus of the soundboard and bracewood had a positive impact on the sound quality. More generally, these results underscore the importance of integrating a given design with the physical characteristics of the component wood.
云杉木材（Picea spp.）几个世纪以来一直被视为弦乐器理想的音板材料，因为其具有材料声学特性。同一种类的树木之间，甚至同一原木内，这些特性都存在很大的差异。因此，可以理解的是，这种可变性会导致在其他方面完全相同的乐器中产生可听的音质差异。此外，可能还有一系列的音板物理特性，会为特定设计带来最佳的音质。制作了 9 把相同型号的钢弦吉他。这些吉他仅在两个参数上有所不同：音板和琴马的密度和杨氏模量。这种可变性代表了目前环太平洋地区木材生产的范围。在听力测试中，使用一段简短的音乐序列进行成对偏好评估。结果表明，对于这种特殊的模型（泰勒 814ce 大音乐会），音板和琴马的低密度和杨氏模量对音质有积极的影响。更一般地说，这些结果强调了将特定设计与组件木材的物理特性相结合的重要性。
