Abstract
With the development of science and technology in the 21st century, 3-D printing has made great progress. In the field of musical field, a complex sound source can be printed with the assistance of 3-D printing techniques. For example, the world's first Ukulele was printed out before long. Base on the innovation, we intend to compare and measure of the 3-D printing Ukulele and wooden Ukulele. Consequently, A-weight sound level of PLA 3-D printing Ukulele is less than that of traditional wooden with the same size, indicating that wooden resonant box is better at sound radiation than PLA 3-D printing Ukulele does. What's more, in the frequency domain, the fundamental frequency is higher than that of PLA 3-D printing Ukulele. In addition, in order to explain the difference between PLA 3-D printing Ukulele and wooden Ukulele, we simulate the vibrating state of two kinds of Ukulele with COMSOL. As a result, radiation acoustic impedance calculated by COMSOL could illustrate the difference. Hence, it is significant for musical instruments concerning the influence of material science.
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