Breaking the limits of acoustic science: A review of acoustic metamaterials

Aydın, Gülcan; San, Sait Eren

doi:10.1016/j.mseb.2024.117384

Cited by 4 publications

(1 citation statement)

References 139 publications

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“…Problems related to excessive noise are becoming more and more relevant in urban and industrial areas [2,4,7]. In this regard, accurate data on the behavior of sound waves in different environments are needed to develop effective noise control methods and improve acoustic comfort in living and working spaces [8].…”

Section: Introductionmentioning

confidence: 99%

Experimental study of sound wave propagation patterns

Imanov,

Kozhas,

Mukhamejanova

et al. 2024

tbus

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The present study compares the behavior of different sound types and their sources concerning distance. Experimental findings demonstrate a consistent reduction in noise levels with increasing distance from the sound origin, aligning with anticipated sound propagation patterns. Median noise level reductions are quantified, showing decreases from 72.7 dB at the source to 54.8 dB at a distance. Pulsed sounds exhibit pronounced fluctuations and peaks at close distances, while steady and blended sounds maintain more uniform levels. An exponential model accurately characterizes the noise reduction phenomenon (R² = 0.8664), underscoring its relevance for noise management, urban planning, and acoustic engineering applications. These results offer valuable insights into sound propagation dynamics and provide a basis for developing effective noise control strategies and optimizing environmental acoustics.

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Section: Introductionmentioning

confidence: 99%

Experimental study of sound wave propagation patterns

Imanov,

Kozhas,

Mukhamejanova

et al. 2024

tbus

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Multi-band DNG metamaterials: A design approach using combined split ring and triple T-resonators

Joseph,

Kumar,

Afullo

2025

Materials Science and Engineering: B

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Analysis of Low-Frequency Sound Absorption Performance and Optimization of Structural Parameters for Acoustic Metamaterials for Spatial Double Helix Resonators

Luo,

Yu,

Kang

et al. 2024

Crystals

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Low-frequency noise absorbers often require large structural dimensions, constraining their development in practical applications. In order to improve space utilization, an acoustic metamaterial with a spatial double helix, called a spatial double helix resonator (SDHR), is proposed in this paper. An analytical model of the spatial double-helix resonator is established and verified by numerical simulations and impedance tube experiments. By comparing the acoustic absorption coefficients of the spatial double-helix resonator, it is shown that the results of the analytical model, the numerical model, and the experiments are in good agreement, proving the accuracy of the theoretical model. The effects of different structural parameters on the peak sound absorption coefficient and resonance frequency are quantitatively revealed. The impedance variation law of the model is obtained, and the resistance and reactance distributions at the resonance frequency are analyzed. In the optimization model, the Back Propagation (BP) network is used to construct the mapping between the structural parameters and the resonance frequency and sound absorption coefficient, and this is used as the constraints of the equation, which is combined with Wild Horse Optimization (WHO) to establish the BP-WHO optimization model to minimize the volume of the spatial double helix resonator. The results show that, for a given noise frequency, the optimized structural parameters enhance the space utilization without affecting the performance of the space double helix resonator.

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Breaking the limits of acoustic science: A review of acoustic metamaterials

Cited by 4 publications

References 139 publications

Experimental study of sound wave propagation patterns

Experimental study of sound wave propagation patterns

Multi-band DNG metamaterials: A design approach using combined split ring and triple T-resonators

Analysis of Low-Frequency Sound Absorption Performance and Optimization of Structural Parameters for Acoustic Metamaterials for Spatial Double Helix Resonators

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