Acoustical Physics最新文献_第4页

Clicks of a Newborn Bottlenose Dolphin (Tursiops truncates) 新生宽吻海豚的咔哒声

IF 1.2 4区物理与天体物理

Acoustical Physics Pub Date : 2026-04-06 DOI: 10.1134/S1063771025600512

V. A. Ryabov

{"title":"Clicks of a Newborn Bottlenose Dolphin (Tursiops truncates)","authors":"V. A. Ryabov","doi":"10.1134/S1063771025600512","DOIUrl":"10.1134/S1063771025600512","url":null,"abstract":"Toothed whales and dolphins produce complex acoustic signals. However, how they develop and function is unclear. In this study, the sounds of a newborn (NB) bottlenose dolphin (Tursiops truncatus) were recorded by a dual-channel recording system in the 0.4–220 kHz frequency band with a dynamic range of 81 dB and sampling frequency of 1 MHz, simultaneously with video recording of its position with respect to hydrophones, 22, 46, 46.5 and 47 h after birth. The results of the analysis of the recordings indicate that the NB produced 20 series containing 1640 echolocation clicks. In doing so, it varied the duration of series in the range of 0.8–7 s, the number of clicks in a series from 20 to 280 and the interpulse intervals from 6 to 220 ms. When moving along the pool, it shifted the position of the maximum of the click radiation direction in space, and each subsequent click was produced after receiving an echo from the previous one and a time delay (tens of ms) for echo processing. The spectral and temporal characteristics of its clicks differ slightly from those of adult dolphins. The apparent source level of clicks (ASL) at a distance of 1 m from the NB was 188–164 dB re 1 μPa. Consequently, the abilities of the NB bottlenose dolphin (Tursiops truncatus) to echolocate, considered for the first time for toothed whales in this paper, are innate, while physiological, social, and cognitive aspects of echolocation, which are not considered in this paper, apparently still require development.","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"71 6","pages":"942 - 951"},"PeriodicalIF":1.2,"publicationDate":"2026-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147618005","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}

引用次数: 0

Interference Immunity of Direction Finding of Broadband Sources with Scalar and Vector–Scalar Antennas 标量和矢量标量天线宽带测向源的抗干扰性

IF 1.2 4区物理与天体物理

Acoustical Physics Pub Date : 2026-04-06 DOI: 10.1134/S1063771025601359

G. M. Glebova, G. N. Kuznetsov

{"title":"Interference Immunity of Direction Finding of Broadband Sources with Scalar and Vector–Scalar Antennas","authors":"G. M. Glebova, G. N. Kuznetsov","doi":"10.1134/S1063771025601359","DOIUrl":"10.1134/S1063771025601359","url":null,"abstract":"A comparison has been made of the noise immunity of local source direction finding algorithms with linear scalar and vector–scalar antennas using different methods of processing signals from pressure receivers and oscillatory velocity receivers. Calculations were carried out for equidistant antennas with equal apertures and equal interelement distances. It has been calculated and experimentally shown that vector–scalar antennas have a significantly smaller side field than scalar antennas, and the additional maximum, which is formed only at “oblique” reception angles, is three to five times smaller than the “mirror” lobe of scalar antennas. Good agreement between the experimental and calculated spatial spectra was established for all directions towards the source. A computational and experimental justification for the use of vector–scalar antennas for unambiguous direction finding of a noise source, including at oblique angles of incidence of the wave front, both “on the foot” and in the antenna towing mode, is presented. It is shown that receiving signals using vector–scalar antennas ensures separation of signals “on the left and right sides” and separation of sources located “in the front and rear hemisphere.”","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"71 6","pages":"866 - 878"},"PeriodicalIF":1.2,"publicationDate":"2026-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147617986","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}

引用次数: 0

Results of a Survey of the Acoustic Conditions in the Northern Gulf of Ob 鄂毕湾北部声学条件调查结果

IF 1.2 4区物理与天体物理

Acoustical Physics Pub Date : 2026-04-06 DOI: 10.1134/S1063771025601396

D. S. Manulchev, D. G. Kovzel, S. V. Dudov, V. A. Gritsenko

引用次数: 0

Compensation for Aberrations Using High-Intensity Focused Ultrasound for Destruction of Uterine Fibroids 高强度聚焦超声对子宫肌瘤破坏畸变的补偿

IF 1.2 4区物理与天体物理

Acoustical Physics Pub Date : 2026-04-06 DOI: 10.1134/S1063771024602772

D. D. Chupova, P. B. Rosnitskiy, V. E. Sinitsyn, E. A. Mershina, O. A. Sapozhnikov, V. A. Khokhlova

{"title":"Compensation for Aberrations Using High-Intensity Focused Ultrasound for Destruction of Uterine Fibroids","authors":"D. D. Chupova, P. B. Rosnitskiy, V. E. Sinitsyn, E. A. Mershina, O. A. Sapozhnikov, V. A. Khokhlova","doi":"10.1134/S1063771024602772","DOIUrl":"10.1134/S1063771024602772","url":null,"abstract":"<div>In a numerical experiment, we analyzed the distortion of an ultrasound beam when focusing through the abdominal wall into the area of uterine fibroids and assessed the possibility of compensation for aberrations caused by inhomogeneities of human body tissues. A three-dimensional acoustic model of the female pelvic organs was constructed based on anonymized CT data. The field was calculated by combining the analytical method for calculating the Rayleigh integral and the pseudospectral method for solving the wave equation in an inhomogeneous medium (k-Wave software package). The diffraction algorithm for aberration compensation was based on modeling the propagation of a spherical wave from the focal point to the surface of an ultrasound phased array and optimizing the selection of phases on its elements using the least squares method. A model of a 256-element compact array with an operating frequency of f = 1.2 MHz and an aperture number of F# = 0.75 was used. Significant field distortions and the occurrence of side maxima comparable in amplitude to the main one are demonstrated in the absence of aberration compensation. Compensation for aberrations made it possible to ensure precise focusing in the target area and increase the pressure amplitude at the focus by 3.2 times.</div>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"71 5","pages":"719 - 728"},"PeriodicalIF":1.2,"publicationDate":"2026-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147617995","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}

引用次数: 0

Estimating the Elastic Anisotropy of a 3D-Printed Photopolymer Sample Using the Nonlinear Data 利用非线性数据估计3d打印光聚合物样品的弹性各向异性

IF 1.2 4区物理与天体物理

Acoustical Physics Pub Date : 2026-04-06 DOI: 10.1134/S1063771025601323

E. S. Mikhalev, A. I. Kokshaiskii, N. I. Odina, A. I. Korobov, P. K. Bezusov

引用次数: 0

Study of the Features of Deep-Water Reception of Pulse Broadband Signal Emission from the Extended Shelf in the Sea of Japan 日本海扩展陆架脉冲宽带信号发射的深水接收特征研究

IF 1.2 4区物理与天体物理

Acoustical Physics Pub Date : 2026-04-06 DOI: 10.1134/S1063771024602322

Yu. N. Morgunov, A. V. Burenin, A. A. Golov

{"title":"Study of the Features of Deep-Water Reception of Pulse Broadband Signal Emission from the Extended Shelf in the Sea of Japan","authors":"Yu. N. Morgunov, A. V. Burenin, A. A. Golov","doi":"10.1134/S1063771024602322","DOIUrl":"10.1134/S1063771024602322","url":null,"abstract":"<div>The article discusses the theoretical and experimental results of studies of propagation of pulse pseudorandom signals in the Sea of Japan on an acoustic path with a length of 144.4 km with the hydrological conditions influenced by the consequences of a typhoon. The authors study the case of propagation of signals with a center frequency of 400 Hz from an extended shelf to the deep sea with reception at depths of 69, 126, 680, and 914 m. To receive signals, a drifting system was used with hydrophones distributed over a depth of up to 1000 m with possible long-term recording at fixed depths. Analysis of experimentally obtained impulse response showed that at all horizons with the same time range, a group of ray arrivals with a duration of about 0.5 s with a maximum in the center is recorded. Based on the results of the experiment, the effective propagation velocities of signals received at various depths were calculated, and conclusions were formulated on the possibility of solving problems of high-precision positioning of underwater objects for various purposes at depths of up to 1000 m and at a distance of hundreds of kilometers from control centers.</div>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"71 5","pages":"738 - 743"},"PeriodicalIF":1.2,"publicationDate":"2026-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147617993","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}

引用次数: 0

Description of Plates with the Matrix Klein–Gordon Equation 用矩阵Klein-Gordon方程描述板材

IF 1.2 4区物理与天体物理

Acoustical Physics Pub Date : 2026-04-06 DOI: 10.1134/S1063771025600433

K. S. Kniazeva, E. L. Shelest, A. V. Shanin

引用次数: 0

Synergistic Noise Control Achieved by Parallel Integration of Micro-Perforated Panel and Helmholtz Resonator at High Ventilation Diameter Ratio 高通径比下微孔板与亥姆霍兹谐振腔并行集成的协同噪声控制

IF 1.2 4区物理与天体物理

Acoustical Physics Pub Date : 2026-04-06 DOI: 10.1134/S1063771024602826

Tao Yu, Zhengbin Zhu, Yunle Cao, Peixin Gao, Xixiong Wang, Jie Jin

{"title":"Synergistic Noise Control Achieved by Parallel Integration of Micro-Perforated Panel and Helmholtz Resonator at High Ventilation Diameter Ratio","authors":"Tao Yu, Zhengbin Zhu, Yunle Cao, Peixin Gao, Xixiong Wang, Jie Jin","doi":"10.1134/S1063771024602826","DOIUrl":"10.1134/S1063771024602826","url":null,"abstract":"Facilities within industrial production environments, such as air conditioning units, cooling systems, pumps, and compressors generate substantial broadband noise and harmonic noise. Broadband noise originates from air flow, whilst harmonic noise arises from rotational motion at specific frequencies. The primary objective of this research is to mitigate noise issues whilst maintaining favorable airflow characteristics. This study designed an acoustic attenuation structure based on the parallel principle of Helmholtz resonator and micro-perforated panel. This achieved synergistic noise reduction for both harmonic and broadband noise at a high inner-to-outer diameter ratio. A theoretical model was established using the transfer matrix method to predict the acoustic performance of the structure. A prototype model was fabricated using 3D printing technology, and its performance and model’ validity were experimentally verified. By adjusting the structural parameters, synergistic reduction of both broadband and harmonic noise can be achieved, rendering the design suitable for diverse industrial applications.","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"71 5","pages":"808 - 816"},"PeriodicalIF":1.2,"publicationDate":"2026-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147617932","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}

引用次数: 0

Comparison of the Efficiency of Methods of Reducing the Integral Radiation Level of a Monopole Source 降低单极子源积分辐射能级方法效率的比较

IF 1.2 4区物理与天体物理

Acoustical Physics Pub Date : 2026-04-06 DOI: 10.1134/S1063771025601104

I. Sh. Fiks, G. E. Fiks

引用次数: 0

Experimental Localization of a Source of Thermal Acoustic Radiation by the Correlation Method 用相关法对热声辐射源进行实验定位

IF 1.2 4区物理与天体物理

Acoustical Physics Pub Date : 2026-04-06 DOI: 10.1134/S1063771025600561

A. A. Anosov, N. V. Granovsky, A. V. Erofeev, A. D. Mansfel’d, R. V. Belyaev, A. S. Kazanskii

引用次数: 0