{"title":"A Composite Sound Insulator Composed of a Helix and a Resonator Array","authors":"Wenqing Diao, Ningwo Pei, Li Fan, Shuyi Zhang, Liping Cheng, Xiaodong Xu","doi":"10.1007/s40857-025-00359-x","DOIUrl":null,"url":null,"abstract":"<div><p>A composite structure composed of a helix and an array of resonators is created to achieve large-amplitude and wide-band sound insulation in a pipe. Two helical structures with lengths of 5–7.5 cm are designed to block sound within two frequency bands of 1100–1700 Hz and 700–1100 Hz, respectively. An array of eight resonators is adopted to produce sound attenuation in the frequency range from 900 to 2500 Hz. Then, by assembling both structures, we can achieve large sound attenuation over 40 dB in a frequency band between 1100 and 1700 Hz or obtain an extremely wide frequency sound attenuation band of 700–2500 Hz with transmission losses from 10 to 48 dB. Thus, owing to the composite structure of the sound insulator, the performance can be optimized according to practical requirements by adjusting the parameters of both parts. Moreover, because the helix and resonator array are both hollow structures, the composite sound insulator does not block airflow and is available in applications requiring natural ventilation.</p></div>","PeriodicalId":54355,"journal":{"name":"Acoustics Australia","volume":"53 3","pages":"419 - 427"},"PeriodicalIF":1.8000,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Acoustics Australia","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.1007/s40857-025-00359-x","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
A composite structure composed of a helix and an array of resonators is created to achieve large-amplitude and wide-band sound insulation in a pipe. Two helical structures with lengths of 5–7.5 cm are designed to block sound within two frequency bands of 1100–1700 Hz and 700–1100 Hz, respectively. An array of eight resonators is adopted to produce sound attenuation in the frequency range from 900 to 2500 Hz. Then, by assembling both structures, we can achieve large sound attenuation over 40 dB in a frequency band between 1100 and 1700 Hz or obtain an extremely wide frequency sound attenuation band of 700–2500 Hz with transmission losses from 10 to 48 dB. Thus, owing to the composite structure of the sound insulator, the performance can be optimized according to practical requirements by adjusting the parameters of both parts. Moreover, because the helix and resonator array are both hollow structures, the composite sound insulator does not block airflow and is available in applications requiring natural ventilation.
期刊介绍：
Acoustics Australia, the journal of the Australian Acoustical Society, has been publishing high quality research and technical papers in all areas of acoustics since commencement in 1972. The target audience for the journal includes both researchers and practitioners. It aims to publish papers and technical notes that are relevant to current acoustics and of interest to members of the Society. These include but are not limited to: Architectural and Building Acoustics, Environmental Noise, Underwater Acoustics, Engineering Noise and Vibration Control, Occupational Noise Management, Hearing, Musical Acoustics.
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