Applied Acoustics最新文献_第5页

Tuning the taste: How acoustic environments and cultural differences moderate the taste and mouthfeel of orange juice 调节味道：声音环境和文化差异如何调节橙汁的味道和口感

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-07-06 DOI: 10.1016/j.apacoust.2025.110921

Noor Fajrina Farah Istiani , Massimiliano Masullo , Yuliana , Miktha Farid Alkadri , Gennaro Ruggiero , Luigi Maffei

{"title":"Tuning the taste: How acoustic environments and cultural differences moderate the taste and mouthfeel of orange juice","authors":"Noor Fajrina Farah Istiani , Massimiliano Masullo , Yuliana , Miktha Farid Alkadri , Gennaro Ruggiero , Luigi Maffei","doi":"10.1016/j.apacoust.2025.110921","DOIUrl":"10.1016/j.apacoust.2025.110921","url":null,"abstract":"<div><div>The setting characteristics of the everyday environment where we consume foods and beverages substantially impact our taste perception. Previous research demonstrated that altering external sensory stimuli of the environment is a potential strategy for modulating taste perception. On the other side, people consume foods and beverages during everyday life in different sound environments. Interestingly, taste and smell preferences differ across cultures. This gap is particularly evident in sound and aroma–taste association studies, where non-Western participants are underrepresented despite their unique sensory experiences. This study explores the intricate relationship between sound environments, orange juice flavour perception, and cross-cultural influences. Western (Italian) and non-Western (Indonesian) participants listened to seven distinct everyday sound environments: a hotel breakfast room, a café, a bar, a food court, a vending machine area, a park and an urban square. They evaluated the aroma, sweetness, sourness, bitterness, freshness, thickness and overall taste of orange juice, along with the valence elicited by the auditory surroundings. The main results revealed that different sound environments moderate the sweetness, sourness and bitterness of the juice and the mouthfeel responses according to their acoustics character. The novelty of this research lies in its examination of how psychoacoustic metrics influence taste and mouthfeel perception. Specifically, increased Roughness in sound environments was found to diminish perceived sweetness, whereas higher Sharpness levels reduced the sensation of thickness. Moreover, the cultural factor also moderated the ratings of food aroma and taste of different sound environments.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"240 ","pages":"Article 110921"},"PeriodicalIF":3.4,"publicationDate":"2025-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144563096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sparsity-driven minimum kernel risk-sensitive loss criterion-based adaptive line enhancer under non-gaussian noise 非高斯噪声下基于稀疏性驱动最小核风险敏感损失准则的自适应线路增强器

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-07-05 DOI: 10.1016/j.apacoust.2025.110925

Xuyan Liu , Yan Wang , Yu Hao , Jinjin Wang

{"title":"Sparsity-driven minimum kernel risk-sensitive loss criterion-based adaptive line enhancer under non-gaussian noise","authors":"Xuyan Liu , Yan Wang , Yu Hao , Jinjin Wang","doi":"10.1016/j.apacoust.2025.110925","DOIUrl":"10.1016/j.apacoust.2025.110925","url":null,"abstract":"<div><div>The tonal components within the noise radiated from surface or underwater vehicles are significant characteristics for passive sonar detection. Adaptive line enhancer (ALE) is widely utilized as a preprocessor in passive sonar systems to enhance the tonals, facilitating subsequent tonal detection. The conventional ALE (CALE), which relies on the second-order statistics, performs well under Gaussian noise conditions. However, the occurrence of impulses and outliers in the background noise, which arise from diverse natural events and human-made interferences, introduces non-Gaussian characteristics. This deviation from Gaussian noise results in diminished performance of CALE. To address this issue, this paper proposes an ALE based on the minimum kernel risk-sensitive loss (MKRSL) criterion and the frequency-domain sparsity of tonals. The KRSL serves as a metric for assessing the similarity between tonals and noise. By adopting the MKRSL criterion, the ALE effectively suppresses impulses and outliers. Additionally, incorporating a sparsity-based penalty into the adaptation process further improves the signal-to-noise ratio (SNR) gain by reducing weight noise. Both simulations and sea trial data processing results demonstrate the effectiveness of the proposed ALE under non-Gaussian noise conditions.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"240 ","pages":"Article 110925"},"PeriodicalIF":3.4,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144563456","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

PSO-SCG-FxRLS: an active control algorithm for improved broadband noise reduction in sparse sound fields PSO-SCG-FxRLS：一种改进稀疏声场宽带降噪的主动控制算法

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-07-02 DOI: 10.1016/j.apacoust.2025.110912

Jianfeng Luo , Kean Chen , Jiyang Zhang , Hao Li , Yidong Liu , Fenghua Tian , Lei Wang

{"title":"PSO-SCG-FxRLS: an active control algorithm for improved broadband noise reduction in sparse sound fields","authors":"Jianfeng Luo , Kean Chen , Jiyang Zhang , Hao Li , Yidong Liu , Fenghua Tian , Lei Wang","doi":"10.1016/j.apacoust.2025.110912","DOIUrl":"10.1016/j.apacoust.2025.110912","url":null,"abstract":"<div><div>The performance of active noise control (ANC) systems is significantly influenced by the characteristics of the path transfer function. Consequently, the effective utilization of the sparsity inherent in the sound field transfer path response to improve the noise reduction performance of the system has become an important research topic in the current ANC field. This study proposes a sparse-aware conjugate gradient-based filtered-x recursive least squares (SCG-FxRLS) algorithm, for which the convergence is theoretically demonstrated. Additionally, the influence of sparse constraint hyperparameters on the algorithm’s performance is thoroughly analyzed. Subsequently, an online particle swarm optimization (PSO) method suitable for ANC systems is introduced, which is combined with the proposed algorithm to form the PSO-SCG-FxRLS algorithm. This integration enhances the algorithm’s capability to adapt effectively to the sound field characteristics within complex environments. Computational complexity analysis indicates that this algorithm exhibits lower complexity than the traditional FxRLS algorithm, thereby satisfying the computational efficiency requirements of the ANC system. Finally, simulations and experiments were used to verify the effectiveness of the proposed algorithm in various sound field environments.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"240 ","pages":"Article 110912"},"PeriodicalIF":3.4,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144523504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Frequency band sensitivity analysis and sound source localization based on bionic hearing system 基于仿生听觉系统的频带灵敏度分析及声源定位

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-07-02 DOI: 10.1016/j.apacoust.2025.110917

Chao Wang , Yungong Li , YongMing Zhao , Hailing Li , Bin Yang

{"title":"Frequency band sensitivity analysis and sound source localization based on bionic hearing system","authors":"Chao Wang , Yungong Li , YongMing Zhao , Hailing Li , Bin Yang","doi":"10.1016/j.apacoust.2025.110917","DOIUrl":"10.1016/j.apacoust.2025.110917","url":null,"abstract":"<div><div>The study of simulating the human auditory system is an important approach to understanding the working mechanisms of auditory neurons and analyzing sound signal characteristics. This research focuses on simulating the functions of the auditory system by establishing models for auditory afferent pathways and the neural responses of the superior olivary complex. Additionally, the study aims to extract and analyze the spectral components of binaural signals to identify the frequency bands sensitive to acoustic cues of sound sources, such as interaural time difference (ITD) and interaural level difference (ILD). The model combines weighted Bayesian classification with the head-related transfer function (HRTF) to address the issue of missing auditory spatial perception cues in microphone array technology. This integration significantly improves the accuracy of single-point sound source localization and the trajectory tracking of moving sound sources in three-dimensional space. Experimental validation shows that the localization accuracy for a single-source sweeping signal can reach 96.89%, and the trajectory recognition accuracy for intermittent moving sound sources remains stable at over 80%. The research reveals the working mechanisms of the human auditory system and provides new solutions for sound source localization algorithms, spectral analysis, and feature extraction.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"240 ","pages":"Article 110917"},"PeriodicalIF":3.4,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144523503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An accurate measurement of parametric array using a spurious sound filter topologically equivalent to a half-wavelength resonator 参数阵列的精确测量使用假声滤波器拓扑等效于半波长谐振器

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-07-02 DOI: 10.1016/j.apacoust.2025.110910

Woongji Kim , Beomseok Oh , Junsuk Rho , Wonkyu Moon

{"title":"An accurate measurement of parametric array using a spurious sound filter topologically equivalent to a half-wavelength resonator","authors":"Woongji Kim , Beomseok Oh , Junsuk Rho , Wonkyu Moon","doi":"10.1016/j.apacoust.2025.110910","DOIUrl":"10.1016/j.apacoust.2025.110910","url":null,"abstract":"<div><div>Parametric arrays (PA) offer exceptional directivity and compactness compared to conventional loudspeakers, facilitating various acoustic applications. However, accurate measurement of audio signals generated by PA remains challenging due to spurious ultrasonic sounds arising from microphone nonlinearities. Existing filtering methods, including Helmholtz resonators, phononic crystals, polymer films, and grazing incidence techniques, exhibit practical constraints such as size limitations, fabrication complexity, or insufficient attenuation. To address these issues, we propose and demonstrate a novel acoustic filter based on the design of a half-wavelength resonator. The developed filter exploits the nodal plane in acoustic pressure distribution, effectively minimizing microphone exposure to targeted ultrasonic frequencies. Fabrication via stereolithography 3D printing ensures high dimensional accuracy, which is crucial for high-frequency acoustic filters. Finite element method simulations guided filter optimization for suppression frequencies at 40 kHz and 60 kHz, achieving high transmission loss around 60 dB. Experimental validations confirm the filter's superior performance in significantly reducing spurious acoustic signals, as reflected in frequency response, beam pattern, and propagation curve measurements. The proposed filter ensures stable and precise acoustic characterization, independent of measurement distances and incidence angles. This new approach not only improves measurement accuracy but also enhances reliability and reproducibility in parametric array research and development.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"240 ","pages":"Article 110910"},"PeriodicalIF":3.4,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144523505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Rail defect detection based on mode wave packet separation algorithm of sparse point array 基于稀疏点阵模式波包分离算法的钢轨缺陷检测

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-07-01 DOI: 10.1016/j.apacoust.2025.110901

Xicheng Feng , Kang Li , Jingmang Xu , Tao Liao , Jian Yang , Ping Wang , Jun Lai

{"title":"Rail defect detection based on mode wave packet separation algorithm of sparse point array","authors":"Xicheng Feng , Kang Li , Jingmang Xu , Tao Liao , Jian Yang , Ping Wang , Jun Lai","doi":"10.1016/j.apacoust.2025.110901","DOIUrl":"10.1016/j.apacoust.2025.110901","url":null,"abstract":"<div><div>The number of guided wave modes in irregular and complex cross-sectional structures is so abundant that it is easy to fail to separate the wave packets of each mode and to detect the reflected echoes during damage detection. In order to meet the needs of non-destructive testing and structural health monitoring for single mode analysis, this paper innovatively proposes a wave packet separation algorithm based on a sparse point array, establishes a practical structural defect detection workflow, and realizes for the first time the accurate identification and localization of rail defects under a few received points. In this paper, the frequency response matrix of the wave packet is constructed by the propagation characteristics of the waveguide, and the mode separation formula based on the sparse point matrix is derived by combining the pseudo-inverse algorithm. At the same time, the selection rule of the single-point excitation point position is determined, and the accurate propagation characteristics of the waveguide structure are obtained by the two-dimensional Fourier transform, and an optimal receiving distance calculation method is proposed according to the principle of waveform information discrimination. The structural defect detection workflow based on mode wave packet separation is further formed, and the separation of each mode wave packet and the reflection wave packet is realized. Finally, in the case where all the receiving points are arranged in the rail web, the simulation realizes the localization of the defects in the rail head, rail web, and rail base, as well as the identification of the defect size and longitudinal position, and is verified by experiment.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"240 ","pages":"Article 110901"},"PeriodicalIF":3.4,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144517863","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Time series forecasting of train axle fatigue crack acoustic emission signals by integrating multi-head attention mechanism into DLinear model 将多头注意机制纳入DLinear模型的列车轴疲劳裂纹声发射信号时间序列预测

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-07-01 DOI: 10.1016/j.apacoust.2025.110922

Li Lin, Xiaonan Shang

{"title":"Time series forecasting of train axle fatigue crack acoustic emission signals by integrating multi-head attention mechanism into DLinear model","authors":"Li Lin, Xiaonan Shang","doi":"10.1016/j.apacoust.2025.110922","DOIUrl":"10.1016/j.apacoust.2025.110922","url":null,"abstract":"<div><div>Among the many factors affecting train safety, the health of train axles is particularly critical. As an important part of the train, cracks in the axle can lead to serious safety accidents if not detected and treated in a timely manner. Acoustic emission technology can detect cracks at an early stage and, as an online real-time detection method, is essential to ensure the reliability of axles. This technology not only improves the timeliness of fault detection but also provides strong support for train maintenance and management. However, obtaining complete and continuous crack extension data is challenging due to environmental and equipment limitations. Therefore, real-time prediction of crack development during train operation has become particularly important. The real-time prediction of the sequence of acoustic emission signals enables the early detection of potential faults, thus effectively preventing the occurrence of major accidents. Therefore, we propose an improved model based on DLinear, designed for real-time prediction of acoustic emission signal time series. This model innovatively incorporates a multi-head attention mechanism into both the trend and seasonal branches. This unique architectural design enables the trend branch to more accurately capture nonlinear variation features while significantly enhancing the seasonal branch’s ability to analyze high-frequency fluctuating signals. Experimental results demonstrate that our proposed algorithm can effectively predict the time series of acoustic emission signals from fatigue cracks in axles.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"240 ","pages":"Article 110922"},"PeriodicalIF":3.4,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144523502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Predictive models for urgency perception in railway crossing alarm signals: Development and applications for Argentina 铁路道口报警信号中紧急感知的预测模型：阿根廷的发展和应用

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-07-01 DOI: 10.1016/j.apacoust.2025.110926

Iván Kaspierowicz, Shin-ichi Sato

{"title":"Predictive models for urgency perception in railway crossing alarm signals: Development and applications for Argentina","authors":"Iván Kaspierowicz, Shin-ichi Sato","doi":"10.1016/j.apacoust.2025.110926","DOIUrl":"10.1016/j.apacoust.2025.110926","url":null,"abstract":"<div><div>This study develops predictive models for the perceived urgency of railway crossing alarm signals, focusing on both frequency and temporal variables. Two subjective tests using incomplete pairwise comparison matrices are conducted to evaluate the effects of these variables. In the first test, pitch and harmonic attenuation are examined as frequency-related factors, while in the second test, speed and attack time are assessed as temporal factors. For each test, nine synthetic alarm signals are generated based on the alarm sounds used in Buenos Aires. The results demonstrate that all four variables significantly influence perceived urgency, with temporal variables exerting a stronger effect than frequency variables. Multiple regression analyses reveal that higher harmonic amplitudes and increased pitch enhance perceived urgency, with harmonic attenuation playing a more dominant role. Similarly, faster speeds and shorter attack times heighten perceived urgency, with nearly equal contributions from both variables. Based on these findings, the study proposes optimized alarm configurations to maximize perceived urgency while adhering to Argentinean regulations. These insights highlight opportunities for improved alarm design to enhance safety at railway crossings.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"240 ","pages":"Article 110926"},"PeriodicalIF":3.4,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144517729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Acoustic switch based on rotatable sonic crystal with multiresonant scatterers 基于多共振散射体可旋转声晶体的声开关

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-07-01 DOI: 10.1016/j.apacoust.2025.110913

David Ramírez-Solana , Valentino Sangiorgio , Rubén Picó , Javier Redondo

{"title":"Acoustic switch based on rotatable sonic crystal with multiresonant scatterers","authors":"David Ramírez-Solana , Valentino Sangiorgio , Rubén Picó , Javier Redondo","doi":"10.1016/j.apacoust.2025.110913","DOIUrl":"10.1016/j.apacoust.2025.110913","url":null,"abstract":"<div><div>This research introduces an acoustic switch based on a Sonic Crystal (SC) containing multiresonant scatterers. The SC operates in a square 2D lattice configuration with scatterers containing Helmholtz resonators (HRs) tuned to different frequencies. By rotating all scatterers by 90°, the interaction between the Bragg bandgaps (Bragg BGs) and the HRs' BGs can be modified, allowing selective frequency filtering and control of wave propagation. Although SCs operating at low frequencies have been widely investigated, the implementation of reconfigurable acoustic switches in the low-to-mid frequency range (500–2500 Hz) remains scarce. This is one of the novelties highlighted in the present study. The simplicity and cost-effectiveness of the 3D-printed structure, coupled with its hollow design that minimizes absorption, enhances its practicality. Experimental validation conducted in an anechoic chamber shows a significant change in acoustic insulation performance, with a maximum contrast ratio of 20 dB. This design opens up new possibilities for noise reduction in urban and industrial environments, adaptive acoustic environments, acoustic sensors, and even acoustic energy harvesting.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"240 ","pages":"Article 110913"},"PeriodicalIF":3.4,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144517864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Low-frequency sound absorption enhancement in multi-layer honeycomb metamaterials with embedded long-curved-neck Helmholtz resonators 嵌入长曲颈亥姆霍兹谐振腔的多层蜂窝超材料低频吸声增强研究

IF 3.4 2区物理与天体物理

Applied Acoustics Pub Date : 2025-07-01 DOI: 10.1016/j.apacoust.2025.110909

Ziming Song , Wei Chen , Shengzhe Jin , Hongwei Zhang , Feihu Shan , Sichao Qu

{"title":"Low-frequency sound absorption enhancement in multi-layer honeycomb metamaterials with embedded long-curved-neck Helmholtz resonators","authors":"Ziming Song , Wei Chen , Shengzhe Jin , Hongwei Zhang , Feihu Shan , Sichao Qu","doi":"10.1016/j.apacoust.2025.110909","DOIUrl":"10.1016/j.apacoust.2025.110909","url":null,"abstract":"<div><div>To overcome the narrow absorption bandwidth of conventional Helmholtz resonator-based acoustic metamaterials in the low-frequency range, this study proposes a multi-layer honeycomb acoustic metamaterial with embedded long-curved-neck Helmholtz resonators (ELCN-HR). A comprehensive methodology integrating theoretical analysis, numerical simulations, and experimental testing is employed to systematically investigate the modulation of resonance frequency by neck geometric parameters and the multi-resonance mode superposition mechanism induced by hierarchical coupling. The results show that the micro-perforation diameter contributes the most in all parameters. Furthermore, the elongated ELCN-HR design substantially reduces resonance frequencies while improving acoustic wave dissipation efficiency. Additionally, the multi-layered coupling architecture excites localized resonance peaks across adjacent frequency bands, facilitating continuous spectral coupling. Optimized simulations demonstrate that the proposed metamaterial achieves a half-absorption bandwidth of 448 Hz (285–733 Hz), representing a 32% enhancement compared to conventional single-layer Helmholtz coupled structures (340 Hz). Moreover, the onset frequency for <em>α</em> > 0.5 is reduced from 720 Hz to 285 Hz, significantly extending low-frequency absorption performance. Mechanistic analysis confirms that multi-scale acoustic impedance gradient matching plays a critical role in enhancing broadband energy dissipation. These findings provide a novel design paradigm for developing low-frequency broadband sound-absorbing metamaterials.</div></div>","PeriodicalId":55506,"journal":{"name":"Applied Acoustics","volume":"240 ","pages":"Article 110909"},"PeriodicalIF":3.4,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144517862","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0