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Modeling the Solution of the Acoustic Inverse Problem of Scattering for a Three-Dimensional Nonstationary Medium 三维非稳态介质散射声学逆问题求解建模
IF 0.9 4区 物理与天体物理
Acoustical Physics Pub Date : 2024-05-07 DOI: 10.1134/S1063771023601401
A. B. Bakushinsky, A. S. Leonov
{"title":"Modeling the Solution of the Acoustic Inverse Problem of Scattering for a Three-Dimensional Nonstationary Medium","authors":"A. B. Bakushinsky,&nbsp;A. S. Leonov","doi":"10.1134/S1063771023601401","DOIUrl":"10.1134/S1063771023601401","url":null,"abstract":"<p>The inverse problem of acoustic sounding of a three-dimensional nonstationary medium is considered, based on the Cauchy problem for the wave equation with a sound speed coefficient depending on the spatial coordinates and time. The data in the inverse problem are measurements of time-dependent acoustic pressure in some spatial domain. Using these data, it is necessary to determine the positions of local acoustic inhomogeneities (spatial sound speed distributions), which change over time. A special idealized sounding model is used, in which, in particular, it is assumed that the spatial sound speed distribution changes little in the interval between source time pulses. With such a model, the inverse problem is reduced to solving three-dimensional Fredholm linear integral equations for each sounding time interval. Using these solutions, the spatial sound speed distributions are calculated in each sounding time interval. When a special (plane-layer) geometric scheme for the location of the observation and sounding domains is included in the sounding scheme, the inverse problem can be reduced to solving systems of one-dimensional linear Fredholm integral equations, which are solved by well-known methods for regularizing ill-posed problems. This makes it possible to solve the three-dimensional inverse problem of determining the nonstationary sound speed distribution in the sounded medium on a personal computer of average performance for fairly detailed spatial grids in a few minutes. The efficiency of the corresponding algorithm for solving a three-dimensional nonstationary inverse sounding problem in the case of moving local acoustic inhomogeneities is illustrated by solving a number of model problems.</p>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"70 1","pages":"153 - 164"},"PeriodicalIF":0.9,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140883866","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
Features of Rayleigh Scattering by a Particle Near an Interface 界面附近粒子的瑞利散射特征
IF 0.9 4区 物理与天体物理
Acoustical Physics Pub Date : 2024-05-07 DOI: 10.1134/S1063771023601395
A. O. Maksimov
{"title":"Features of Rayleigh Scattering by a Particle Near an Interface","authors":"A. O. Maksimov","doi":"10.1134/S1063771023601395","DOIUrl":"10.1134/S1063771023601395","url":null,"abstract":"<div><p>Features of Rayleigh scattering by a solid particle at a small distance compared to the wavelength from an impenetrable plane boundary are revealed. The choice of the Green’s function in the integral representation of the Helmholtz equation makes it possible to reduce integration only over the particle surface and eliminate the contribution of the interface surface. When expanding over a small wave parameter, a well-known approach is used, making it possible to represent the solution of a given order as the sum of a potential function and a component expressed in terms of lower-order approximations. The potential component is found, expressed in terms of solid irregular harmonics centered on the particle and its mirror image. The vibrational velocity of the center of a particle and the scattering amplitude are determined. In the lowest order of the wavenumber, the scattering amplitude is expressed in terms of the monopole and dipole components.</p></div>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"70 1","pages":"1 - 8"},"PeriodicalIF":0.9,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140886491","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
Low-Frequency Shear Elasticity of the Homological Series of Normal Hydrocarbons 普通碳氢化合物同构系列的低频剪切弹性
IF 0.9 4区 物理与天体物理
Acoustical Physics Pub Date : 2024-05-07 DOI: 10.1134/S1063771023601413
T. S. Dembelova, D. N. Makarova, B. B. Badmaev
{"title":"Low-Frequency Shear Elasticity of the Homological Series of Normal Hydrocarbons","authors":"T. S. Dembelova,&nbsp;D. N. Makarova,&nbsp;B. B. Badmaev","doi":"10.1134/S1063771023601413","DOIUrl":"10.1134/S1063771023601413","url":null,"abstract":"<div><p>The low-frequency (74 kHz) shear elasticity of the homologous series of normal hydrocarbons (alkanes) is studied using acoustic resonance. The shear modulus and mechanical loss tangent are measured, and the relaxation frequency and effective viscosity are calculated. The dependences of these parameters on homologue viscosity are established. It is shown that the mechanical loss tangent of all studied liquids is less than 1, demonstrating that the relaxation frequency is below the experimental frequency.</p></div>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"70 1","pages":"35 - 38"},"PeriodicalIF":0.9,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140886873","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
Temporal Convolutional Network for Acoustic Echo Cancellation in Double-Talk Scenarios 用于双声道场景中声学回声消除的时序卷积网络
IF 0.9 4区 物理与天体物理
Acoustical Physics Pub Date : 2024-02-28 DOI: 10.1134/S1063771023600195
Jinfang Zeng, Chao Li, Jiamei Huang, Wei Li
{"title":"Temporal Convolutional Network for Acoustic Echo Cancellation in Double-Talk Scenarios","authors":"Jinfang Zeng,&nbsp;Chao Li,&nbsp;Jiamei Huang,&nbsp;Wei Li","doi":"10.1134/S1063771023600195","DOIUrl":"10.1134/S1063771023600195","url":null,"abstract":"<p>In communication systems, when the loudspeaker and the microphone are coupled together, it creates acoustic echoes. With the increasing demand for mobile communication and online conference, it is urgent to solve the problem of acoustic echo cancellation (AEC) in communication systems. Due to the existence of nonlinear distortion, background noise and other reasons, traditional AEC methods can no longer solve the problem of echo cancellation well. Although some traditional methods consider the problem of nonlinear distortion, the effect of echo suppression is still not ideal. In this paper, we propose an echo cancellation method based on frequency domain mask, which is defined as a supervised speech separation problem. The use of the temporal convolutional network and optimal ratio mask to obtain the predicted mask, as well as the use of SISNR as the loss function, have been shown to effectively reduce echo in double-talk, nonlinear distortion, and background noise. This method is a significant advancement in the field of AEC and can be used in for mobile communication and online conference<i>.</i></p>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"69 6","pages":"897 - 906"},"PeriodicalIF":0.9,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140009951","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
Sound Level Reduction by T-Shaped Barriers 通过 T 形屏障降低声级
IF 0.9 4区 物理与天体物理
Acoustical Physics Pub Date : 2024-02-28 DOI: 10.1134/S106377102360047X
A. I. Komkin, R. N. Musaeva
{"title":"Sound Level Reduction by T-Shaped Barriers","authors":"A. I. Komkin,&nbsp;R. N. Musaeva","doi":"10.1134/S106377102360047X","DOIUrl":"10.1134/S106377102360047X","url":null,"abstract":"<div><p>The acoustic characteristics of barriers with a T-shaped profile are studied by finite element simulation. It has been found that the sound reduction efficiency of this barrier is related not only to diffraction, but also to sound interference at the leading and trailing edges of the barrier. It is shown that the sound interference at the trailing edge of the barrier, in contrast to the sound interference at the leading edge, affects the sound field only at short distances from the rear surface of the barrier. The influence of the sound frequency and geometrical dimensions of the barrier on these processes is analyzed.</p></div>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"69 6","pages":"863 - 870"},"PeriodicalIF":0.9,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140009759","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
Study of the Acoustic Characteristics of Suspensions Based on Glycerol and Synthetic Diamond Microparticles Using a Resonator with a Longitudinal Electric Field 利用带纵向电场的谐振器研究基于甘油和人造金刚石微粒的悬浮液的声学特性
IF 0.9 4区 物理与天体物理
Acoustical Physics Pub Date : 2024-02-28 DOI: 10.1134/S106377102360050X
A. P. Semyonov, B. D. Zaitsev, A. A. Teplykh, I. A. Borodina
{"title":"Study of the Acoustic Characteristics of Suspensions Based on Glycerol and Synthetic Diamond Microparticles Using a Resonator with a Longitudinal Electric Field","authors":"A. P. Semyonov,&nbsp;B. D. Zaitsev,&nbsp;A. A. Teplykh,&nbsp;I. A. Borodina","doi":"10.1134/S106377102360050X","DOIUrl":"10.1134/S106377102360050X","url":null,"abstract":"<p>The acoustic properties of suspensions based on pure glycerol and diamond powder with a particle size of 1–2 μm and different concentrations were studied using a resonator with a longitudinal electric field. A disk resonator made of langasite with round electrodes on both sides of the plate with a frequency of 4.1 MHz, operating on a longitudinal acoustic wave, was completely immersed in a liquid container with the studied suspension. Based on the measured frequency dependences of the real and imaginary parts of the electric impedance of the resonator using an equivalent electromechanical circuit, the longitudinal elastic modulus and longitudinal viscosity coefficient of the samples were determined. Comparison of the experimental dependences of the longitudinal elastic modulus, viscosity coefficient, and longitudinal acoustic wave velocity on the volume concentration of diamond particles in the suspension with the calculated dependences demonstrated good agreement.</p>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"69 6","pages":"788 - 797"},"PeriodicalIF":0.9,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140009760","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
Visualizing Ultrasound Sources Using Signal Time Reversal in the Particle Dynamics Model 利用粒子动力学模型中的信号时间反转可视化超声源
IF 0.9 4区 物理与天体物理
Acoustical Physics Pub Date : 2024-02-28 DOI: 10.1134/S1063771023601188
D. Ya. Sukhanov, A. E. Kuzovova
{"title":"Visualizing Ultrasound Sources Using Signal Time Reversal in the Particle Dynamics Model","authors":"D. Ya. Sukhanov,&nbsp;A. E. Kuzovova","doi":"10.1134/S1063771023601188","DOIUrl":"10.1134/S1063771023601188","url":null,"abstract":"<div><p>A method is proposed for solving the inverse problem of reconstructing acoustic wave sources from field measurements on some surface using wavefront reversal in the particle dynamics method. In this method, the studied medium is represented as a set of interacting particles (material points or solid bodies), for which classical equations of motion are written. The paper considers the representation of a medium as a set of particles in a body-centered cubic crystal lattice. The case of a linear dependence of the force of attraction of particles on distance is considered. The advantage of this approach is the ability to take into account wave propagation in arbitrarily inhomogeneous media using a single numerical model. The possibility of visualizing two spherical acoustic wave sources in water behind an obstacle has been demonstrated numerically and experimentally, despite the presence of transverse waves in the considered model of a solid body; their influence is negligible in this case. The method was tested experimentally on a soundproof screen with an aperture simulating a sound-emitting object of complex shape. A wave from a point source of short pulses passes through the aperture. Using a receiving acoustic sensor mounted on a two-dimensional scanner, the spatiotemporal distribution of sound vibrations on the water surface was measured. By processing the data using wavefront reversal in the particle model, the image of the aperture in the soundproof screen was reconstructed.</p></div>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"69 6","pages":"884 - 896"},"PeriodicalIF":0.9,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140009761","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
Improvement of Optoacoustic Angiographic Images Using One-Dimensional Deconvolution with Adaptive Real-Time Self-Calibration 利用一维解卷积和自适应实时自校准改进光声血管造影图像
IF 0.9 4区 物理与天体物理
Acoustical Physics Pub Date : 2024-02-28 DOI: 10.1134/S1063771023601176
E. M. Timanin, I. S. Mikhailova, I. I. Fiks, A. A. Kurnikov, A. V. Kovalchuk, A. G. Orlova, O. A. Ugarova, M. Frenz, M. Jaeger, P. V. Subochev
{"title":"Improvement of Optoacoustic Angiographic Images Using One-Dimensional Deconvolution with Adaptive Real-Time Self-Calibration","authors":"E. M. Timanin,&nbsp;I. S. Mikhailova,&nbsp;I. I. Fiks,&nbsp;A. A. Kurnikov,&nbsp;A. V. Kovalchuk,&nbsp;A. G. Orlova,&nbsp;O. A. Ugarova,&nbsp;M. Frenz,&nbsp;M. Jaeger,&nbsp;P. V. Subochev","doi":"10.1134/S1063771023601176","DOIUrl":"10.1134/S1063771023601176","url":null,"abstract":"<p>This work introduces a method of one-dimensional deconvolution with Tikhonov regularization for enhancing three-dimensional optoacoustic images in vivo. The method employs adaptive self-calibration to eliminate frequency-dependent distortions associated with ultrasound propagation and detection. By adapting to the inhomogeneous frequency characteristics of the examined medium, the method eliminates the need for additional calibration experiments. The processing time for three-dimensional optoacoustic data of size 200 × 200 × 100 voxels is less than 5 ms, facilitating the real-time enhancement of angiographic images and improving the effective spatial resolution by more than 50%.</p>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"69 6","pages":"914 - 920"},"PeriodicalIF":0.9,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140009649","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
Finite Element Modeling of Hydrodynamic Noise Arising in a Flow Around Elastic Bodies 弹性体周围水流中产生的水动力噪声的有限元建模
IF 0.9 4区 物理与天体物理
Acoustical Physics Pub Date : 2024-02-28 DOI: 10.1134/S1063771023601206
A. S. Suvorov, E. M. Sokov, A. L. Virovlyansky, V. O. Eremeev, N. V. Balakireva
{"title":"Finite Element Modeling of Hydrodynamic Noise Arising in a Flow Around Elastic Bodies","authors":"A. S. Suvorov,&nbsp;E. M. Sokov,&nbsp;A. L. Virovlyansky,&nbsp;V. O. Eremeev,&nbsp;N. V. Balakireva","doi":"10.1134/S1063771023601206","DOIUrl":"10.1134/S1063771023601206","url":null,"abstract":"<p>A finite element method is presented for calculating hydrodynamic noise excited by turbulent fluid fluctuations in the presence of an elastic body. The conventional approach to solving this problem by direct solution of the Lighthill equation requires a large amount of calculations. It is demonstrated that the situation is considerably simplified when noise components are calculated at relatively low frequencies, which correspond to wavelengths that exceed the dimensions of the turbulent zone. In this case, the noise field can be expressed in terms of turbulent fluctuations in pressure on the surface of an elastic body, which is found in the incompressible fluid approximation. The article is based on a report presented at the IX Russian Conference “Computational Experiment in Aeroacoustics and Aerodynamics,” Svetlogorsk, September 26–October 1, 2022.</p>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"69 6","pages":"815 - 822"},"PeriodicalIF":0.9,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140009775","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
Acoustic Analogy with High-Order Time Derivatives for Far-Field Acoustic Predictions 声学类比与远场声学预测的高阶时间导数
IF 0.9 4区 物理与天体物理
Acoustical Physics Pub Date : 2024-02-28 DOI: 10.1134/S106377102210013X
Minjun Park, Hakjin Lee
{"title":"Acoustic Analogy with High-Order Time Derivatives for Far-Field Acoustic Predictions","authors":"Minjun Park,&nbsp;Hakjin Lee","doi":"10.1134/S106377102210013X","DOIUrl":"10.1134/S106377102210013X","url":null,"abstract":"<p>The numerical method is proposed for predicting the far-field noise using Ffowcs Williams–Hawkings (FW–H) equation with high-order finite-difference method for the time derivative. The results of this method for second-, fourth-, and sixth-order finite difference approximations are compared with that of analytic applications, such as monopole and dipole. It is observed that the use of the high-order time derivatives is an efficient approach to improve the prediction accuracy of the radiated acoustic pressure, particularly when the temporal resolution is not sufficiently high owing to the limited time step size. Our findings in this study provide evidence that for higher-order approximations, the RMS error for the first and second derivatives is smaller. In addition, the RMS error for the sixth-order approximation decreases considerably compared to that for the second-order approximation, with an increase in the number of points per period. This study and its results are expected to serve as a guide for noise prediction, indicating the temporal accuracies of the acoustic analogy according to the high-order approximation of time derivatives<i>.</i></p>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"69 6","pages":"844 - 852"},"PeriodicalIF":0.9,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140009952","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
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