Research on Low-Frequency Noise Control Based on Fractal Coiled Acoustic Metamaterials

<table class="table-group" id="tab1"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td class="align_left"> </td><td class="align_center">Channel layer thickness <i>b</i> (mm)</td><td class="align_center">Channel layer thickness <i>c</i> (mm)</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td class="align_left">Combination 1</td><td class="align_center">5</td><td class="align_center">10</td></tr><tr><td class="align_left">Combination 2</td><td class="align_center">4</td><td class="align_center">11</td></tr><tr><td class="align_left">Combination 3</td><td class="align_center">3</td><td class="align_center">12</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Combinations of channel layer thicknesses.</div>

Shock and Vibration

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Table 1

Table 1: Research on Low-Frequency Noise Control Based on Fractal Coiled Acoustic Metamaterials 