Studies on Dual Helmholtz Resonators and Asymmetric Waveguides for Ventilated Soundproofing
Achieving the simultaneity of ventilation and soundproofing is a significant challenge in applied acoustics. Ventilated soundproofing relies on the interplay between local resonance and nonlocal coupling of acoustic waves within a sub-wavelength structure. However, previously studied structures poss...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2024-02-01
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| Series: | Sensors |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1424-8220/24/5/1432 |
| _version_ | 1797263863192748032 |
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| author | Inkyuk Han Inho Lee Gwanho Yoon |
| author_facet | Inkyuk Han Inho Lee Gwanho Yoon |
| author_sort | Inkyuk Han |
| collection | DOAJ |
| description | Achieving the simultaneity of ventilation and soundproofing is a significant challenge in applied acoustics. Ventilated soundproofing relies on the interplay between local resonance and nonlocal coupling of acoustic waves within a sub-wavelength structure. However, previously studied structures possess limited types of fundamental resonators and lack modifications from the basic arrangement. These constraints often force the specified position of each attenuation peak and low absorption performance. Here, we suggest the in-duct-type sound barrier with dual Helmholtz resonators, which are positioned around the symmetry-breaking waveguides. The numerical simulations for curated dimensions and scattered fields show the aperiodic migrations and effective amplifications of the two absorptive domains. Collaborating with the subsequent reflective domains, the designed structure holds two effective attenuation bands under the first Fabry–Pérot resonance frequency. This study would serve as a valuable example for understanding the local and non-local behaviors of sub-wavelength resonating structures. Additionally, it could be applied in selective noise absorption and reflection more flexibly. |
| first_indexed | 2024-04-25T00:19:46Z |
| format | Article |
| id | doaj.art-263d888ca2434924af41c5a06787ddc1 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-25T00:19:46Z |
| publishDate | 2024-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-263d888ca2434924af41c5a06787ddc12024-03-12T16:54:44ZengMDPI AGSensors1424-82202024-02-01245143210.3390/s24051432Studies on Dual Helmholtz Resonators and Asymmetric Waveguides for Ventilated SoundproofingInkyuk Han0Inho Lee1Gwanho Yoon2Department of Manufacturing Systems and Design Engineering, Seoul National University of Science and Technology, Seoul 01811, Republic of KoreaDepartment of Manufacturing Systems and Design Engineering, Seoul National University of Science and Technology, Seoul 01811, Republic of KoreaDepartment of Manufacturing Systems and Design Engineering, Seoul National University of Science and Technology, Seoul 01811, Republic of KoreaAchieving the simultaneity of ventilation and soundproofing is a significant challenge in applied acoustics. Ventilated soundproofing relies on the interplay between local resonance and nonlocal coupling of acoustic waves within a sub-wavelength structure. However, previously studied structures possess limited types of fundamental resonators and lack modifications from the basic arrangement. These constraints often force the specified position of each attenuation peak and low absorption performance. Here, we suggest the in-duct-type sound barrier with dual Helmholtz resonators, which are positioned around the symmetry-breaking waveguides. The numerical simulations for curated dimensions and scattered fields show the aperiodic migrations and effective amplifications of the two absorptive domains. Collaborating with the subsequent reflective domains, the designed structure holds two effective attenuation bands under the first Fabry–Pérot resonance frequency. This study would serve as a valuable example for understanding the local and non-local behaviors of sub-wavelength resonating structures. Additionally, it could be applied in selective noise absorption and reflection more flexibly.https://www.mdpi.com/1424-8220/24/5/1432noise controlventilationdual Helmholtz resonatorsasymmetric waveguidesaperiodic resonanceacoustic metamaterial |
| spellingShingle | Inkyuk Han Inho Lee Gwanho Yoon Studies on Dual Helmholtz Resonators and Asymmetric Waveguides for Ventilated Soundproofing Sensors noise control ventilation dual Helmholtz resonators asymmetric waveguides aperiodic resonance acoustic metamaterial |
| title | Studies on Dual Helmholtz Resonators and Asymmetric Waveguides for Ventilated Soundproofing |
| title_full | Studies on Dual Helmholtz Resonators and Asymmetric Waveguides for Ventilated Soundproofing |
| title_fullStr | Studies on Dual Helmholtz Resonators and Asymmetric Waveguides for Ventilated Soundproofing |
| title_full_unstemmed | Studies on Dual Helmholtz Resonators and Asymmetric Waveguides for Ventilated Soundproofing |
| title_short | Studies on Dual Helmholtz Resonators and Asymmetric Waveguides for Ventilated Soundproofing |
| title_sort | studies on dual helmholtz resonators and asymmetric waveguides for ventilated soundproofing |
| topic | noise control ventilation dual Helmholtz resonators asymmetric waveguides aperiodic resonance acoustic metamaterial |
| url | https://www.mdpi.com/1424-8220/24/5/1432 |
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