An ultra-low-frequency sound absorber and its application in noise reduction in ducts
We demonstrate, both numerically and experimentally, an ultra-low-frequency sound absorber and its application in silenced ducts. The absorber comprises an array of resonant dual-spiral channel units (with a thickness of λ/47) backed by a wall, achieving near-perfect sound absorption with a fraction...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2024-01-01
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| Series: | APL Materials |
| Online Access: | http://dx.doi.org/10.1063/5.0188383 |