| 摘要(英) |
Tourette syndrome is a chronic neurophysiological disease that occurs in the basal nucleus of a child′s brain. It is a chronic, repetitive and involuntary movement and tic "tic," one by one, starting with simple movements and becoming more complex. . Tic is the most common: fast and transient blinking, grimacing, and shrugging. This article mainly emphasizes the three elements of the sound-absorbing mask: microperforated, thickness and sound-absorbing cotton. Using different arrangements and combinations, it can measure whether sound-absorbing masks can achieve the preset sound-absorbing effect and find the expected sound-absorbing effect. The first part of this thesis is that the porous acoustic metamaterials are used in the first edition of sound-absorbing masks, and the second part is the microperforated acoustical super-absorption materials used in the second edition of sound-absorbing masks. Acoustic translucent sound-absorbing materials provide an effective sound suppression capability. The sound-absorbing masks were designed and manufactured in cooperation with Hanlong industrial and chungli new hospital. The final goal is to successfully complete the design and development of a low-cost, lightweight, acoustic hyperspectral material structure for patients with Tourette′s syndrome. |
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