Coherent Image Source Modeling of Sound Fields in Long Spaces with a Sound-Absorbing Ceiling
Sound-absorbing boundaries can attenuate noise propagation in practical long spaces, but fast and accurate sound field modeling in this situation is still difficult. This paper presents a coherent image source model for simple yet accurate prediction of the sound field in long enclosures with a soun...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-07-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/11/15/6743 |
| _version_ | 1827686759357480960 |
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| author | Hequn Min Ke Xu |
| author_facet | Hequn Min Ke Xu |
| author_sort | Hequn Min |
| collection | DOAJ |
| description | Sound-absorbing boundaries can attenuate noise propagation in practical long spaces, but fast and accurate sound field modeling in this situation is still difficult. This paper presents a coherent image source model for simple yet accurate prediction of the sound field in long enclosures with a sound absorbing ceiling. In the proposed model, the reflections on the absorbent boundary are separated from those on reflective ones during evaluating reflection coefficients. The model is compared with the classic wave theory, an existing coherent image source model and a scale-model experiment. The results show that the proposed model provides remarkable accuracy advantage over the existing models yet is fast for sound prediction in long spaces. |
| first_indexed | 2024-03-10T09:20:19Z |
| format | Article |
| id | doaj.art-f0f5306247b24459bef70a3a0cad5c0f |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T09:20:19Z |
| publishDate | 2021-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-f0f5306247b24459bef70a3a0cad5c0f2023-11-22T05:18:52ZengMDPI AGApplied Sciences2076-34172021-07-011115674310.3390/app11156743Coherent Image Source Modeling of Sound Fields in Long Spaces with a Sound-Absorbing CeilingHequn Min0Ke Xu1Key Laboratory of Urban and Architectural Heritage Conservation, Ministry of Education, School of Architecture, Southeast University, 2 Sipailou, Nanjing 210096, ChinaKey Laboratory of Urban and Architectural Heritage Conservation, Ministry of Education, School of Architecture, Southeast University, 2 Sipailou, Nanjing 210096, ChinaSound-absorbing boundaries can attenuate noise propagation in practical long spaces, but fast and accurate sound field modeling in this situation is still difficult. This paper presents a coherent image source model for simple yet accurate prediction of the sound field in long enclosures with a sound absorbing ceiling. In the proposed model, the reflections on the absorbent boundary are separated from those on reflective ones during evaluating reflection coefficients. The model is compared with the classic wave theory, an existing coherent image source model and a scale-model experiment. The results show that the proposed model provides remarkable accuracy advantage over the existing models yet is fast for sound prediction in long spaces.https://www.mdpi.com/2076-3417/11/15/6743long spacecoherent image source methodsound-absorbing boundarysound field modelingscale-model experiment |
| spellingShingle | Hequn Min Ke Xu Coherent Image Source Modeling of Sound Fields in Long Spaces with a Sound-Absorbing Ceiling Applied Sciences long space coherent image source method sound-absorbing boundary sound field modeling scale-model experiment |
| title | Coherent Image Source Modeling of Sound Fields in Long Spaces with a Sound-Absorbing Ceiling |
| title_full | Coherent Image Source Modeling of Sound Fields in Long Spaces with a Sound-Absorbing Ceiling |
| title_fullStr | Coherent Image Source Modeling of Sound Fields in Long Spaces with a Sound-Absorbing Ceiling |
| title_full_unstemmed | Coherent Image Source Modeling of Sound Fields in Long Spaces with a Sound-Absorbing Ceiling |
| title_short | Coherent Image Source Modeling of Sound Fields in Long Spaces with a Sound-Absorbing Ceiling |
| title_sort | coherent image source modeling of sound fields in long spaces with a sound absorbing ceiling |
| topic | long space coherent image source method sound-absorbing boundary sound field modeling scale-model experiment |
| url | https://www.mdpi.com/2076-3417/11/15/6743 |
| work_keys_str_mv | AT hequnmin coherentimagesourcemodelingofsoundfieldsinlongspaceswithasoundabsorbingceiling AT kexu coherentimagesourcemodelingofsoundfieldsinlongspaceswithasoundabsorbingceiling |