Acoustics Australia最新文献

{"title":"News Item","authors":"","doi":"10.1007/s40857-026-00399-x","DOIUrl":"10.1007/s40857-026-00399-x","url":null,"abstract":"","PeriodicalId":54355,"journal":{"name":"Acoustics Australia","volume":"54 2","pages":"289 - 306"},"PeriodicalIF":1.8,"publicationDate":"2026-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148553043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

{"title":"Real-Time Cavity Volumetry via Helmholtz Resonance Using Pressure Amplitude: Proof of Concept","authors":"Mohammad Amin Barzegar,&nbsp;Clive E. Davies,&nbsp;Miles C. E. Grafton","doi":"10.1007/s40857-026-00385-3","DOIUrl":"10.1007/s40857-026-00385-3","url":null,"abstract":"<div><p>Helmholtz resonance provides a well-established acoustic basis for determining volume via the resonance-frequency–volume relationship. However, frequency-tracking methods are typically too slow for dynamic measurements. We present an alternative physical model, the sound-pressure quality-factor (SPQF) model, which estimates volume in real time from cavity sound-pressure amplitude, avoiding frequency hunting. The model follows from the equations governing the driven, underdamped vibration of the port-air mass. The resonator is excited at its empty-cavity natural frequency with a single-tone drive; inserting a sample reduces the steady-state pressure amplitude, from which displaced volume is inferred. We validate the method with liquid and solid samples in 1-, 2-, and 3-L cavities and in a mechanically adjustable chamber under dynamic conditions. The approach achieved millilitre-level accuracy for solids and relative expanded uncertainty <i>U</i>, <i>k</i> = <i>2</i> &lt; 0.1% of cavity capacity in static tests, and it tracked liquid discharge at ~ 15–20 Hz. On the mechanically variable resonator, SPQF tracked piston-driven volume changes for speeds up to 75 mm·s⁻¹, delivering ~ 20 measurements in 1.5 s.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":54355,"journal":{"name":"Acoustics Australia","volume":"54 2","pages":"439 - 457"},"PeriodicalIF":1.8,"publicationDate":"2026-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40857-026-00385-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148553296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bi-Material Layout Optimization of Structural–Acoustic Coupled System in Mid-Frequency Based on SmEdA","authors":"Yechen Sun,&nbsp;Yang Yu,&nbsp;Zhengyan Chen,&nbsp;Weizhen Chen,&nbsp;Hao Zheng,&nbsp;Guozhong Zhao","doi":"10.1007/s40857-026-00387-1","DOIUrl":"10.1007/s40857-026-00387-1","url":null,"abstract":"<div><p>This paper presents an innovative scheme for layout optimization of bi-material structures, which can be effectively applied to the design of the structural–acoustic coupled systems subjected to mid-frequency excitation. The basic theory of the scheme is the statistical modal energy distribution analysis (SmEdA). As an improved and extended version from statistical energy analysis (SEA), the core concept of computing energy transfer at the per-mode level enables the SmEdA to address mid-frequency vibration problems. The proposed optimization model aims at minimizing the acoustic energy in the cavity through rational bi-material distribution (stiffer material and softer material), subject to a weight constraint on the stiffer material. The virtual density of the structural plate, obtained by the solid isotropic material with penalization (SIMP) method within the bi-material interpolation model, serves as the design variable. A volume-preserving Heaviside penalization is incorporated into the optimization framework for eliminating the intermediate density region. Moreover, sensitivity analysis is conducted using the complex variable method (CVM) to enhance the computational accuracy and practical applicability of the established optimization framework. Finally, numerical cases are presented to elaborate the practicality of the developed optimization scheme. It can be concluded that: (a) A considerable reduction of the overall acoustic energy within the cavity is observed; (b) the peak value of modal coupling strength is effectively reduced and the corresponding distribution tends toward more homogenization.</p></div>","PeriodicalId":54355,"journal":{"name":"Acoustics Australia","volume":"54 2","pages":"421 - 437"},"PeriodicalIF":1.8,"publicationDate":"2026-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148553109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

{"title":"Study on Three-Dimensional Multi-source Localization Based on Optimized Deep Learning with Interpretable Analysis","authors":"Liqiang Yang,&nbsp;Pan Wang,&nbsp;Jianwang Shao","doi":"10.1007/s40857-026-00386-2","DOIUrl":"10.1007/s40857-026-00386-2","url":null,"abstract":"<div><p>In recent years, there has been a surge focusing on advanced sound source localization methods based on deep learning. However, the black-box feature extraction mechanism impedes their optimization. This study proposes a two-step grid-free method for locating multiple sources based on deep ensemble learning and interpretable artificial intelligence (AI). In the first step, sound pressure signals received by a spherical microphone array are preprocessed into auto-power spectra, which are then fed into a classifier to count the sources. In the second step, the aforementioned signals are converted into generalized cross-correlations with phase transform (GCC-PHAT), which are then input to an ensemble regressor comprising four types of regressors for source localization. Additionally, two interpretable AI techniques, t-distributed stochastic neighbor embedding and activation maps, are employed to analyze the underlying principles of the deep learning-based method. The classifier achieves a testing accuracy of 94.59%. Compared to single-type regressors, the ensemble regressor reduces the mean localization error by up to 33.72%. The activation maps reveal that the extracted features are the middle section of the GCC-PHAT, while the influence of the two sides on localization is negligible. After trimming these sides, input data volume decreases by 72.05%, and the time per localization drops remarkably without significant loss in accuracy. These results demonstrate that the proposed method achieves three-dimensional multi-source localization with higher accuracy and lower computation cost.</p></div>","PeriodicalId":54355,"journal":{"name":"Acoustics Australia","volume":"54 2","pages":"399 - 419"},"PeriodicalIF":1.8,"publicationDate":"2026-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148553018","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

{"title":"Correction to: Pilot Study on Active Noise Control for Vehicle Interior Wind Noise","authors":"Tao Wang,&nbsp;Zhien Liu,&nbsp;Wan Chen,&nbsp;Chihua Lu,&nbsp;Yi Sun,&nbsp;Ying Wang","doi":"10.1007/s40857-026-00377-3","DOIUrl":"10.1007/s40857-026-00377-3","url":null,"abstract":"","PeriodicalId":54355,"journal":{"name":"Acoustics Australia","volume":"54 :","pages":"101 - 102"},"PeriodicalIF":1.8,"publicationDate":"2026-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148011969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

{"title":"Broadband Sound Absorption with Low-Perforation Micro-Perforated Panels Coupled with Space-Coiling and Helmholtz Resonators: Numerical and Experimental Study","authors":"Emad Panahi,&nbsp;Francesco Braghin,&nbsp;Alberto Corigliano,&nbsp;Luca Sangiuliano,&nbsp;Luca D’Alessandro","doi":"10.1007/s40857-026-00384-4","DOIUrl":"10.1007/s40857-026-00384-4","url":null,"abstract":"<div><p>This study proposes a new sound absorbing panel designed for broadband low-frequency performance. The panel integrates a fixed low perforation rate micro-perforated panels (MPPs) with space-coiling and Helmholtz resonator slit-type structures, forming single- and double-layer units capable of wideband absorption. A hybrid series–parallel configuration, investigated using finite element analysis (FEA), creates multiple resonance peaks and enhances absorption bandwidth across low, mid, and high frequencies. To get optimum efficiency, a genetic algorithm (GA) is employed to optimize key geometric parameters. Experimental tests are conducted on both unoptimized and optimized prototypes, each with a 41 mm air cavity. The unoptimized design provides an absorption bandwidth of 1250 Hz (350–1600 Hz), while the optimized panel extends this slightly to 1255 Hz (345–1600 Hz). The Impedance tube measurements were validated against numerical predictions and, with the optimum design having a bandwidth-to-thickness ratio of 30.60 and being excellent performance than current absorbers documented in the literature. The proposed sound absorbing panel is thin and lightweight, making it particularly suitable for applications where weight and space constraints are critical, such as aerospace, civil engineering, and transportation, while providing a compact and practically feasible solution for broadband passive noise control.</p></div>","PeriodicalId":54355,"journal":{"name":"Acoustics Australia","volume":"54 2","pages":"375 - 398"},"PeriodicalIF":1.8,"publicationDate":"2026-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148553187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

{"title":"News Item","authors":"","doi":"10.1007/s40857-026-00383-5","DOIUrl":"10.1007/s40857-026-00383-5","url":null,"abstract":"","PeriodicalId":54355,"journal":{"name":"Acoustics Australia","volume":"54 :","pages":"1 - 28"},"PeriodicalIF":1.8,"publicationDate":"2026-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148011903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

{"title":"Design Optimization and Performance Analysis of Multi-Layer Micro-Perforated Panel-Acoustic Black Hole Hybrid Structure for Low-Frequency Noise Control in Electrical Grids","authors":"Jingzhu Hu,&nbsp;Bing Zhou,&nbsp;Ni Li,&nbsp;Yuan Ni","doi":"10.1007/s40857-026-00381-7","DOIUrl":"10.1007/s40857-026-00381-7","url":null,"abstract":"<div><p>To address the challenge of low-frequency broadband noise control in high-voltage equipment, this study proposes a composite sound-absorbing structure integrating an acoustic black hole (ABH) and multi-layer micro-perforated plates (MPPs). Its core innovations lie in the design of a power-law decreasing perforation rate and the development of a corresponding theoretical model. Methodologically, a theoretical model and design method for this composite structure were established based on the ABH mechanism. Subsequently, finite element simulations were conducted to analyze the influence of MPPs parameters on sound absorption performance and identify optimal structural parameters. Finally, specimens were fabricated via three-dimensional (3D) printing, and impedance tube tests were carried out for performance validation. The results indicate that, with a total thickness not exceeding 100 mm, the composite structure exhibits effective low-frequency broadband sound absorption within the measured frequency band of 195 ~ 1000 Hz, achieving an average sound absorption coefficient of 0.7. This performance stems from the synergistic effect between the slow-wave effect of sound waves within the structure and optimized acoustic impedance matching. The proposed structure shows significant potential for engineering applications in space-constrained scenarios and provides a new approach for noise control in high-voltage equipment.</p></div>","PeriodicalId":54355,"journal":{"name":"Acoustics Australia","volume":"54 2","pages":"361 - 373"},"PeriodicalIF":1.8,"publicationDate":"2026-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148553179","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

{"title":"A Novel Hybrid Active Noise Control System for Attenuating Multi-Channel Interior Broadband and Narrowband Hybrid Noise","authors":"Can Cheng,&nbsp;Ting Hu,&nbsp;Wan Chen,&nbsp;Zhien Liu,&nbsp;Xianming Sun,&nbsp;Lipeng Wang","doi":"10.1007/s40857-026-00382-6","DOIUrl":"10.1007/s40857-026-00382-6","url":null,"abstract":"<div><p>Hybrid vehicle interior noise is mainly a hybrid noise consisting of a broadband road noise component and a narrowband order frequency noise component. Multi-channel hybrid active noise control (MCHANC) systems are considered an effective solution. However, the conventional MCHANC system still has two difficulties in solving the interior hybrid noise. The first is that increasing the number of channels not only leads to a sharp rise in algorithmic computational complexity but also demands higher system control robustness. The second is that the traditional HANC algorithm cannot sufficiently resolve the coupled interference between broadband and narrowband noise signals, resulting in limited suppression capability for unsteady-state noise. To solve the above problems, this study proposes a novel multi-channel HANC-DWT-NREC algorithm. To reduce the computational complexity of the MCHANC system, the proposed HANC-DWT-NREC algorithm contains a broadband active noise control (BANC) subsystem based on a delayless subband algorithm structure for attenuating the broadband noise components, while enhancing system robustness through subband signal decomposition. A discrete wavelet transform optimised narrowband residual error signal cancellation (DWT-NREC) subsystem is introduced to eliminate the potential narrowband residual error signals in the BANC subsystem and to avoid the coupled interference of broadband and narrowband noise signals. In addition, to dynamically balance the steady-state error and convergence speed of the system, a step-size self-adjustment strategy is proposed to adjust the step size of the BANC subsystem by constructing a convergence evaluation function. Numerous simulations and real-vehicle test experiments are carried out under different operating conditions using a headrest system. Results demonstrate that the proposed multi-channel HANC-DWT-NREC algorithm outperforms other HANC algorithms, exhibiting superior noise reduction performance and robustness under both steady-state and unsteady-state noise conditions, while achieving equalised noise reduction at both ear positions.</p></div>","PeriodicalId":54355,"journal":{"name":"Acoustics Australia","volume":"54 2","pages":"341 - 360"},"PeriodicalIF":1.8,"publicationDate":"2026-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148552911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

{"title":"Psychoacoustic Perception of Small-Scale, Single-Stage Waterfall Sounds","authors":"Bo Wu,&nbsp;Zhengguang Li,&nbsp;Minmin Yuan,&nbsp;Zheng Shi,&nbsp;Yaoyao Jiang","doi":"10.1007/s40857-026-00380-8","DOIUrl":"10.1007/s40857-026-00380-8","url":null,"abstract":"<div><p>The sound of waterfalls is vital in shaping the soundscape of public leisure spaces, such as urban parks. This study explores the perception patterns of small-scale, single-stage waterfall sounds. Using a laboratory waterfall apparatus, sound samples were collected and analyzed under various conditions. Integrating subjective evaluations allowed us to examine the relationships between waterfall parameters, psychoacoustic metrics, and perceptual responses. Recommendations for achieving favorable waterfall sounds are provided. The results show that drop height, flow rate, and impact material significantly influence the acoustic characteristics of waterfall sounds. Generally, greater drop height and flow rate lead to increased loudness and sharpness of the sound produced by waterfall, while resulting in only minor and irregular variations in roughness. When the flow rate is low, waterfalls impacting water produce greater loudness and roughness than those impacting other materials. At high flow rates, impact with gravel produces a higher sharpness. Subjective evaluations are most strongly influenced by loudness, followed by sharpness, and then roughness. Higher loudness or sharpness leads to more negative ratings, while greater roughness results in more positive ratings. To achieve an aesthetically pleasing waterfall sound, it is recommended to prioritize water as the impact material, followed by monolithic stone, and that gravel is avoided. When using water or gravel as the impact material, a low flow rate is advisable. When monolithic stone is used, a low flow rate is recommended for high drop heights and a high flow rate for low drop heights. This study provides theoretical support for designing of waterfall soundscapes in urban spaces, offering practical solutions for improving urban acoustic quality and enhancing residents’ living experience.</p></div>","PeriodicalId":54355,"journal":{"name":"Acoustics Australia","volume":"54 2","pages":"329 - 340"},"PeriodicalIF":1.8,"publicationDate":"2026-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148553211","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}