The RMT diagram for an acoustic coating with three-layer periodic inclusions, in which the start (10 Hz, blue dots) and cut-off (10000 Hz, black asterisks) frequencies of sound absorption coefficients are distinguished.
<p>Notably, beyond 2818 degrees of freedom, the sound absorption remains almost unaltered as the number of degrees of freedom increases, which means that the number of degrees of freedom does not significantly affect the sound absorption performance.</p>
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2024
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| Summary: | <p>Notably, beyond 2818 degrees of freedom, the sound absorption remains almost unaltered as the number of degrees of freedom increases, which means that the number of degrees of freedom does not significantly affect the sound absorption performance.</p> |
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