Professional players claim that stringed musical instruments exhibit better acoustic behaviour if they are frequently played. Although in literature there is no clear relationship between these phenomena, this work aims to develop a device capable of “making a violin sound” autonomously, so that it can always be kept in optimal conditions. The paper shows the design aspects of the magnetostrictive actuator, its operating principle, the prototype development and the experimental characterization. The prototype is then mounted on a new violin, simulating its continuous use for a week. During the test the acoustic measurements showed a large change in the acoustic response of the instrument, thus demonstrating the effectiveness of the magnetostrictive actuator in the training of a stringed instrument.

专业演奏者声称，如果经常使用弦乐器，它们会表现出更好的声学性能。尽管在文献中这些现象之间没有明确的联系，但这项工作旨在开发一种能够自动“发出小提琴声音”的设备，以便始终将其保持在最佳状态。本文展示了磁致伸缩执行器的设计方面，其工作原理，原型开发和实验特性。然后将原型安装在新的小提琴上，模拟其连续使用一周。在测试过程中，声学测量结果表明仪器的声学响应发生了很大的变化，从而证明了磁致伸缩执行器在弦乐器训练中的有效性。