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Design and analysis of multi-resonant hybrid sonic crystal noise barrier for broadband noise attenuation.

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Title: Design and analysis of multi-resonant hybrid sonic crystal noise barrier for broadband noise attenuation.
Authors: Mohapatra, Karisma1,2 (AUTHOR) k.mohapatra.nitrkl@gmail.com, Jena, Dibya Prakash2 (AUTHOR), Dwivedy, Santosha Kumar1,3 (AUTHOR)
Source: Building Acoustics. Jun2026, Vol. 33 Issue 2, p405-427. 23p.
Subjects: Noise barriers, Sound-wave attenuation, Insertion loss (Telecommunication), Phononic crystals
Abstract: In recent years, there has been growing interest in employing sonic crystals as noise barriers, as periodic arrangement of the scatterers enables sound attenuation within specific frequency range is known as "Bragg band." Resonant and multi-resonant scatterers are used to enhance acoustic attenuation by generating an additional peak in lower frequency band apart from the Bragg band. However, it remains essential to increase the insertion loss (IL) around both sides of resonant peaks, which is known as passband. To address this issue, both C-shaped and perforated resonant scatterers and combination of concentric C-shaped and perforated scatterers named as CP multi-resonant scatterers are hybridized by installing flat parallel porous panels within the rows of periodic scatterers. The performance of the suggested hybrid configuration has been tested by two-fold approach. Firstly, the IL in broadband frequency range is enhanced ahead of Bragg band and secondly, an attempt has been made to convert the passband to stopband around the resonance peaks in lower frequency band. The numerical model corroborated by experimental results confirmed maximum and broader frequency band of noise attenuation specifically around both sides of resonant peaks and ahead of Bragg band in IL is achieved using the hybrid configuration. [ABSTRACT FROM AUTHOR]
Copyright of Building Acoustics is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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An: 193893711
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  Label: Title
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  Data: Design and analysis of multi-resonant hybrid sonic crystal noise barrier for broadband noise attenuation.
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  Data: <searchLink fieldCode="AR" term="%22Mohapatra%2C+Karisma%22">Mohapatra, Karisma</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> k.mohapatra.nitrkl@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Jena%2C+Dibya+Prakash%22">Jena, Dibya Prakash</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Dwivedy%2C+Santosha+Kumar%22">Dwivedy, Santosha Kumar</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Building+Acoustics%22">Building Acoustics</searchLink>. Jun2026, Vol. 33 Issue 2, p405-427. 23p.
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  Data: <searchLink fieldCode="DE" term="%22Noise+barriers%22">Noise barriers</searchLink><br /><searchLink fieldCode="DE" term="%22Sound-wave+attenuation%22">Sound-wave attenuation</searchLink><br /><searchLink fieldCode="DE" term="%22Insertion+loss+%28Telecommunication%29%22">Insertion loss (Telecommunication)</searchLink><br /><searchLink fieldCode="DE" term="%22Phononic+crystals%22">Phononic crystals</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: In recent years, there has been growing interest in employing sonic crystals as noise barriers, as periodic arrangement of the scatterers enables sound attenuation within specific frequency range is known as "Bragg band." Resonant and multi-resonant scatterers are used to enhance acoustic attenuation by generating an additional peak in lower frequency band apart from the Bragg band. However, it remains essential to increase the insertion loss (IL) around both sides of resonant peaks, which is known as passband. To address this issue, both C-shaped and perforated resonant scatterers and combination of concentric C-shaped and perforated scatterers named as CP multi-resonant scatterers are hybridized by installing flat parallel porous panels within the rows of periodic scatterers. The performance of the suggested hybrid configuration has been tested by two-fold approach. Firstly, the IL in broadband frequency range is enhanced ahead of Bragg band and secondly, an attempt has been made to convert the passband to stopband around the resonance peaks in lower frequency band. The numerical model corroborated by experimental results confirmed maximum and broader frequency band of noise attenuation specifically around both sides of resonant peaks and ahead of Bragg band in IL is achieved using the hybrid configuration. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Building Acoustics is the property of Sage Publications Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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    Identifiers:
      – Type: doi
        Value: 10.1177/1351010X251414514
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 23
        StartPage: 405
    Subjects:
      – SubjectFull: Noise barriers
        Type: general
      – SubjectFull: Sound-wave attenuation
        Type: general
      – SubjectFull: Insertion loss (Telecommunication)
        Type: general
      – SubjectFull: Phononic crystals
        Type: general
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      – TitleFull: Design and analysis of multi-resonant hybrid sonic crystal noise barrier for broadband noise attenuation.
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            NameFull: Dwivedy, Santosha Kumar
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            – D: 01
              M: 06
              Text: Jun2026
              Type: published
              Y: 2026
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