Journal of the Acoustical Society of America最新文献

{"title":"Pile driving sound induces short-term behavioral changes in black sea bass (Centropristis striata): A field studya).","authors":"Sierra D Jarriel, Youenn Jézéquel, Nathan Formel, Seth Cones, Jenni A Stanley, T Aran Mooney","doi":"10.1121/10.0036347","DOIUrl":"https://doi.org/10.1121/10.0036347","url":null,"abstract":"<p><p>Offshore wind represents a renewable energy alternative as countries seek to limit the climate-altering effects of fossil fuels. The global investment in wind energy has generated substantial concern, as turbine construction emits high-intensity sounds and the associated impacts on marine fauna remain largely unknown. This in situ experimental study quantified behavioral changes of commercially important black sea bass (Centropristis striata) to nearshore pile driving using video observation. Behavior of caged black sea bass was characterized at near and far sites before and during repeated bouts of two contrasting pile driving techniques: impact and vibratory hammering (VH), over two consecutive days. At impact hammer onset, animals at both sites reduced swimming in midwater, switching to bottom-associated freezing behaviors consistent with heightened alertness. Yet they returned to pre-exposure states during VH and later impact hammer sequences, even at close sites with the highest peak-to-peak sound pressure levels (203-213 dB re 1μPa). Behavioral changes were more persistent at the near site, but neither distance elicited significant behavioral changes on the second day of exposure. The results indicate that black sea bass behavior may be initially altered by impact hammer sound, but these effects are short-lived and do not continue through multiple exposures or consecutive days.</p>","PeriodicalId":17168,"journal":{"name":"Journal of the Acoustical Society of America","volume":"157 4","pages":"2350-2364"},"PeriodicalIF":2.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143763968","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}

{"title":"A subspace spatial smoothing-based sparse reconstruction passive direction-of-arrival estimation method under strong interference.","authors":"Chenmu Li, Liang Xie, Zhongdi Liu, Bin Zhou, Qiming Ma","doi":"10.1121/10.0036352","DOIUrl":"https://doi.org/10.1121/10.0036352","url":null,"abstract":"<p><p>Passive direction-of-arrival (DOA) estimation of weak targets under strong interference is usually challenging, due to the lack of prior information about the targets. When strong interferences and weak targets are closely spaced and the interference signals are strongly correlated or even coherent with the target signals, the DOA estimation of weak targets can become even more difficult. To address this problem, a subspace spatial smoothing-based sparse reconstruction passive DOA estimation method is proposed. In this method, the sample covariance matrix is projected into the signal subspace to mitigate the adverse effect of interference on the target signal. Subsequently, the modified enhanced spatial smoothing technique is applied to the signal subspace, which not only enhances robustness to correlated signals but also improves the accuracy of covariance reconstruction. Furthermore, a grid evolution method is developed to improve the utilization efficiency of grid points, significantly reducing the computational complexity while remaining a reasonable DOA estimation accuracy. Simulations and experimental results demonstrate that, when strong interferences and weak targets are closely spaced, the proposed method achieves higher resolution and DOA estimation accuracy compared to existing DOA estimation methods. Additionally, it exhibits high computational efficiency and robustness to coherent signals.</p>","PeriodicalId":17168,"journal":{"name":"Journal of the Acoustical Society of America","volume":"157 4","pages":"2376-2391"},"PeriodicalIF":2.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143764260","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}

{"title":"Humpback whale (Megaptera novaeangliae) breathing sound characteristics from simultaneous above and underwater measurements.","authors":"Max K Radermacher, Matthew E Schinault, Sai Geetha Seri, Hamed Mohebbi-Kalkhoran, Nicholas C Makris, Purnima Ratilal","doi":"10.1121/10.0036353","DOIUrl":"https://doi.org/10.1121/10.0036353","url":null,"abstract":"<p><p>Humpback whale breathing-related sounds were recorded on elements of a coherent hydrophone array subaperture deployed vertically at the Great South Channel on the US Northeastern continental shelf in Fall 2021, where half of the hydrophones were in-air and the rest submerged underwater. In-air hydrophones recorded breathing sounds with approximately 2.5 s duration, but smaller bandwidths compared to underwater hydrophones where signal energies extended beyond 50 kHz, and a mean underwater source level of 161 ± 4 dB re 1 μPa at 1 m, based on measurements at 22.9 m. The underwater recorded humpback whale breathing sound spectra displayed a broadband dip centered at 15.7 kHz, with approximately 400 Hz half-power bandwidth, likely caused by attenuation from propagation through pulsating air bubbles. The air bubble radius for natural frequency of oscillations at 15.7 kHz is estimated to be 0.205-0.21 mm. These bubbles are capable of removing energy from the forward propagated humpback breathing sounds via resonance absorption most pronounced at and near bubble natural oscillation frequency. Humpback whale distances from the vertically deployed hydrophones are estimated and tracked by matching the curved nonlinear travel-time wavefront of its breathing sounds, since the whale was in the near-field of the subarray.</p>","PeriodicalId":17168,"journal":{"name":"Journal of the Acoustical Society of America","volume":"157 4","pages":"2304-2318"},"PeriodicalIF":2.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143753285","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}

{"title":"Bone ultrasound fractal dimension theory and experimental analysis with application to early osteoporosis prediction in cancellous bone.","authors":"Mohammad Hodaei, Andreas Mandelis, Angela M Cheung","doi":"10.1121/10.0036142","DOIUrl":"https://doi.org/10.1121/10.0036142","url":null,"abstract":"<p><p>Fractal analysis and ultrasound techniques are pivotal in assessing osteoporosis by examining the complex structure of cancellous bone. Osteoporosis, marked by reduced bone mass and the degradation of bone microarchitecture, results in greater fragility and a higher risk of fractures. The poroelastodynamic model proposed in this study incorporates the Navier-Stokes equations of linear elasticity and Biot's theory of porous media, allowing the investigation of osteoporosis versus fractal dimension. Some mechanical properties of cancellous bone, such as porosity, density, elasticity, Poisson's ratio, and viscosity of bone marrow within the porous medium, are taken into account in this analysis. Our findings suggest that the fractal dimension of cancellous bone is a critical factor in predicting osteoporosis. Our study incorporates data from 84 women and 49 men to explore how fractal dimension can predict osteoporosis. We found that individuals with osteoporosis consistently exhibit lower fractal dimensions compared to those with normal bone, irrespective of gender or age. Analyzing rib data from three donors, we observed that an increase in fractal dimension correlates with a decrease in Young's modulus. Furthermore, examining lumbar spine data from 22 cadavers, we observed that increased bone mineral density is associated with higher fractal dimensions, while higher bone porosity correlates with reduced bone mineral density. Additionally, considering the attenuation of cancellous bone from 61 women, including 32 with osteoporotic bone and 29 with normal bone, shows that attenuation in normal bone is higher than in osteoporotic bone when accounting for porosity. Therefore, it can be concluded that increased porosity leads to a reduction in fractal dimension. From this study, the fractal dimension emerges as a critical metric in predicting osteoporosis, offering insights into the structural changes within cancellous bone that contribute to its fragility and susceptibility to fractures.</p>","PeriodicalId":17168,"journal":{"name":"Journal of the Acoustical Society of America","volume":"157 4","pages":"2440-2460"},"PeriodicalIF":2.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143763425","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}

{"title":"A future agenda for acoustics education in Algerian architecture curricula: Current state and strategic directions.","authors":"Tallal Abdel Karim Bouzir, Djihed Berkouk, Safieddine Ounis","doi":"10.1121/10.0036363","DOIUrl":"https://doi.org/10.1121/10.0036363","url":null,"abstract":"<p><p>This study analyzes the integration of architectural and environmental acoustics in the architectural curriculum in Algeria. The research evaluates the content, teaching hours, and practical application of acoustics education and compares it with similar programs at Middle East Technical University and Bilkent University in Turkey. In contrast to Turkish programs, which integrate a broader range of topics such as room acoustics, environmental noise control, soundscapes, and the use of simulation tools with a strong emphasis on hands-on projects and real-world applications, the paper highlights significant gaps in the Algerian curriculum, including the absence of practical training and essential advanced topics in acoustics. Based on the comparison, the study proposes a strategic agenda to enhance acoustics education in Algeria, aligning it with international standards and equipping students with the skills needed to address modern acoustical challenges in architectural design.</p>","PeriodicalId":17168,"journal":{"name":"Journal of the Acoustical Society of America","volume":"157 4","pages":"2433-2439"},"PeriodicalIF":2.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143764259","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}

{"title":"Enhancing the coherence between virtual and physical signals in virtual sensing with a double-layer microphone arrangement.","authors":"Hang Li, Shuping Wang, Jiancheng Tao, Xiaojun Qiu","doi":"10.1121/10.0036354","DOIUrl":"https://doi.org/10.1121/10.0036354","url":null,"abstract":"<p><p>The coherence between virtual and physical signals is important in an active noise control system with virtual sensing techniques because it determines the upper limit of the noise reduction performance. In this paper, distributing physical microphones on two concentric hemispherical surfaces surrounding the virtual microphone is proposed to improve the coherence in practical applications. It is demonstrated that such a double-layer physical microphone arrangement outperforms the single-layer arrangement with the same number of physical microphones due to the added sound pressure gradient information obtained with microphones in two different layers. The simulation results in a diffuse field, and the experiment results in a reverberation room are presented to show that the upper limit frequencies below which the coherence is more than 0.9 is larger than the single-layer arrangement with the proposed double-layer arrangement. The upper limit frequency can be further increased by decreasing the distance between the two spherical surfaces and aligning the physical microphones radially for a better estimation of the radial sound pressure gradient. The findings are further supported with the experiment results obtained in a real car running on a typical asphalt road at a constant speed of 50 km/h.</p>","PeriodicalId":17168,"journal":{"name":"Journal of the Acoustical Society of America","volume":"157 4","pages":"2392-2403"},"PeriodicalIF":2.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143763966","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}

{"title":"Acoustic waves in a perforated cylinder.","authors":"Alexei T Skvortsov, Ian R MacGillivray, Oleg A Godin","doi":"10.1121/10.0036131","DOIUrl":"https://doi.org/10.1121/10.0036131","url":null,"abstract":"<p><p>A lumped parameter approach to the problem of acoustic wave scattering by a perforated cylinder has been presented. The proposed framework enables analytical evaluation of the scattering amplitudes of all harmonics and derivation of the dispersion relations for the guided wave propagating inside the cylinder. The lumped parameter boundary condition enables straightforward estimation of the effect of different perforation patterns on the scattering characteristics and internal resonances of the perforated cylinder. The derived equations were treated analytically and validated numerically. It was demonstrated how the proposed theory can be applied for estimation of the fundamental frequency of a two-dimensional Helmholtz resonator with the complex configurations of openings. The predictions are in good agreement with the previously published results.</p>","PeriodicalId":17168,"journal":{"name":"Journal of the Acoustical Society of America","volume":"157 3","pages":"1880-1888"},"PeriodicalIF":2.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143657577","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}

{"title":"Optimised implicit finite-difference schemes for the wave equation with admittance boundary conditionsa).","authors":"Jan W Smits, Stefan Bilbao","doi":"10.1121/10.0036229","DOIUrl":"https://doi.org/10.1121/10.0036229","url":null,"abstract":"<p><p>Wave-based acoustic simulation offers, in theory, a complete solution to the problem of room auralisation. In practice, however, the computational requirements of such simulations, in terms of both computation time and memory usage are very large even for moderately-sized rooms. In this article, a family of implicit finite-difference schemes is described that can enable simulation over the full audio bandwidth up to 20 kHz. When optimised against a wideband error criterion, the schemes' improved numerical accuracy allows a coarse grid resolution to be used, in turn leading to reduced computational times and memory usage compared with commonly used explicit methods. The schemes are complemented by provably stable admittance boundaries over a general staircased geometry. Various numerical examples illustrate the stability, accuracy and performance results achieved with the optimised schemes.</p>","PeriodicalId":17168,"journal":{"name":"Journal of the Acoustical Society of America","volume":"157 3","pages":"2168-2179"},"PeriodicalIF":2.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143709609","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}

{"title":"Performance weighted blended spectrogram.","authors":"Jeff Tucker, Kathleen E Wage, John R Buck, Lora J Van Uffelen","doi":"10.1121/10.0036216","DOIUrl":"https://doi.org/10.1121/10.0036216","url":null,"abstract":"<p><p>Spectrograms are used for time-frequency analysis and as preprocessing for signal classifiers and other algorithms. The conventional spectrogram is a tapered short-time Fourier transform, equivalent to a bank of bandpass filters. The taper defines filter-bank characteristics such as bandwidth and sidelobe levels. Although the conventional spectrogram uses minimal computational resources, its design requires a compromise between resolution and interference suppression. Adaptive spectrogram algorithms adjust the filter-bank based on incoming data, thereby allowing different bandwidth/sidelobe trade-offs at each frequency and time. Adaptation can simultaneously improve tonal resolution and reveal quiet sources but typically costs substantially more to implement. This paper presents an adaptive spectrogram designed for applications with limited computational resources, e.g., autonomous vehicles. The performance weighted blended (PWB) spectrogram combines the output of a set of conventional filter-banks designed with different tapers. By adapting its blend weights at each frequency and time, the new algorithm separates loud closely spaced tones and identifies quiet signals. Because it relies on conventional filter-banks, the PWB spectrogram requires significantly less computation than other adaptive algorithms that require expensive matrix computations. Analysis of underwater glider data demonstrates the algorithm's ability to reveal a quiet chirp signal in the presence of vehicle self-noise.</p>","PeriodicalId":17168,"journal":{"name":"Journal of the Acoustical Society of America","volume":"157 3","pages":"2106-2116"},"PeriodicalIF":2.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143709841","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}

{"title":"A method for approximating high frequency sound radiation-The plane projection Rayleigh integral.","authors":"Marius Walther, André Gerlach, Marko Liebler, Christoph Haugwitz, Mario Kupnik","doi":"10.1121/10.0036130","DOIUrl":"https://doi.org/10.1121/10.0036130","url":null,"abstract":"<p><p>The sound radiation of vibrating surfaces can be calculated using integral-based numerical methods. Due to the increasing discretization requirements, the computational effort increases significantly with increasing frequencies. Therefore, approximation methods with less computational effort are desirable. This paper introduces a method called the plane projection Rayleigh integral (PPRI), which combines low computational effort with high precision. The method approximates the sound radiation by applying the Rayleigh integral to a vibrating virtual plane representing the object in two dimensions. The method's performance is evaluated by comparing it to the visible element Rayleigh integral and the high frequency boundary element method (HFBEM), focusing on the accuracy and its dependence on radius of surface curvature, sound frequency, and distance from the surface. Analytical solutions for the breathing and oscillating sphere are used as benchmarks. The PPRI demonstrates the highest accuracy among the methods tested. Error values decrease significantly with larger radii and higher frequencies, falling below a 1% threshold at 4 times smaller Helmholtz numbers (radius-wavelength ratio) than the HFBEM. Additionally, the PPRI requires the least computational time in this consideration. Thus, the PPRI achieves both high precision and efficiency.</p>","PeriodicalId":17168,"journal":{"name":"Journal of the Acoustical Society of America","volume":"157 3","pages":"1714-1725"},"PeriodicalIF":2.1,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143615782","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}