Embedded Rough-Neck Helmholtz Resonator Low-Frequency Acoustic Attenuator by Xianming Sun, Tao Yu, Lipeng Wang, Yunshu Lu, Changzheng Chen

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Conference Room Reverberation Time Correction Using Helmholtz Resonators Lined with Absorbers by Hossein Namvar Arefi, Seyyed Mohammad Amin Ghiasi, Seyyede Mahshid Ghaffari, Farhad Ramezanghorbani, Shiva Sharifpour, Peyman Irajizad, Seyede Delaram Ghoreishi Langroudi, Ahmad Amjadi

“…Helmholtz resonators are widely used to absorb sound noise especially at low frequencies. …”
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Aeroacoustic Attenuation Performance of a Helmholtz Resonator with a Rigid Baffle Implemented in the Presence of a Grazing Flow by Di Guan, Dan Zhao, Zhaoxin Ren

“…To broaden its’ effective frequency range and to improve its transmission loss performance, a modified design of a Helmholtz resonator is proposed and evaluated by implementing a rigid baffle in its cavity. …”
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Nonlinear diffraction of water waves by offshore stuctures by Matiur Rahman, Lokenath Debnath

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A Novel Circular Plate Acoustic Energy Harvester for Urban Railway Noise by Tian-Chen Yuan, Fei Chen, Jian Yang, Rui-Gang Song, Yong Kong

“…The Helmholtz resonator is designed to amplify the sound pressure. …”
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Optimal design of acoustic metamaterials for noise suppression by the frequency division in military equipment by Shaohua Bi, Fei Yang, Xinmin Shen, Wenqiang Peng, Xiaocui Yang, Qin Yin, Xiaonan Zhang, Heng Zhang, Dong Wang, Jingguo Chen, Zhiming Li

“…Based on the transfer matrix method, a theoretical model that can predict the acoustic characteristics of a hybrid structure with multiple Helmholtz resonator (HR) units is established, and its feasibility is verified through finite element simulations and experiments. …”
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Mycelium-Bound composites from agro-industrial waste for broadband acoustic absorption by Wenjing Sun, Sophie H. Strässle Zúñiga, Valentin Philippe, Louisa Rinaldi, Tiffany Abitbol

“…The composites were grown in 3D printed molds to impart precise perforated patterns according to the principles of Helmholtz resonance. This approach led to improvements in sound absorption across a broad frequency range, particularly at low to mid-frequencies. …”
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