Acoustical Physics最新文献_第6页

Verification of Relations Obtained in Radio Astronomy for Correlation Reception of Thermal Acoustic Radiation 热声辐射相关接收的射电天文学关系验证

IF 0.9 4区物理与天体物理

Acoustical Physics Pub Date : 2025-03-07 DOI: 10.1134/S1063771024602103

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

引用次数: 0

Estimation of the Amplitude–Frequency Response of a Sound Source from Measurements in a Tank with Reflecting Boundaries 从具有反射边界的水箱测量中估计声源的幅频响应

IF 0.9 4区物理与天体物理

Acoustical Physics Pub Date : 2025-03-07 DOI: 10.1134/S1063771024601791

V. K. Bakhtin, A. L. Virovlyansky, M. S. Deryabin, A. Yu. Kazarova

引用次数: 0

Sound Intensity Fluctuations Caused by the Motion of Internal Wave Solitons in the ASIAEX Experiment ASIAEX实验中内波孤子运动引起的声强波动

IF 0.9 4区物理与天体物理

Acoustical Physics Pub Date : 2025-03-07 DOI: 10.1134/S1063771024603121

V. A. Grigorev

{"title":"Sound Intensity Fluctuations Caused by the Motion of Internal Wave Solitons in the ASIAEX Experiment","authors":"V. A. Grigorev","doi":"10.1134/S1063771024603121","DOIUrl":"10.1134/S1063771024603121","url":null,"abstract":"<div>One of the episodes of the ASIAEX 2001 experiment (in the South China Sea) is considered, in which a large internal wave soliton moved along two stationary acoustic paths 32 and 19 km long, and associated fluctuations in the intensity of low-frequency sound (224 and 300 Hz) were observed. During the study, the phenomenon of constancy of the dominant frequency of fluctuations over time was discovered. For example, during 6-h soliton motion along a long path, where the sea depth changed three times (from 350 to 120 m), and the soliton velocity, two times (from 2 to 1 m/s), the dominant frequency of fluctuations remained approximately constant at 1.5 cph (cycles per hour) with an accuracy of 10%. The paper analyzes the causes of this phenomenon. For this, the soliton is considered within the framework of a two-layer model of the aquatic environment, and sound propagation, within the framework of mode and ray theories. According to ray theory, the dominant frequency of fluctuations is determined by the ratio of the soliton velocity to the ray cycle responsible for the dominant fluctuations. In mode theory, a similar expression is obtained where the role of the ray cycle is played by a combination of spatial beat periods of several pairs of modes. It is shown that with a change in the sea depth, the soliton velocity and the ray cycle change almost proportionally, as a result of which the dominant frequency of fluctuations remains constant. The described phenomenon may be universal and not limited to the ASIAEX water area. The constancy of the dominant frequency allows one, in particular, to determine the variable soliton velocity as a function of time or distance, which is successfully demonstrated in the work and can be used for acoustic monitoring of solitons.</div>","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"70 6","pages":"971 - 988"},"PeriodicalIF":0.9,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143571133","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

Some Peculiarities of Intense Acoustic Beam Diffraction on a Semiscreen Obstacle 半屏障碍物上强声束衍射的一些特性

IF 0.9 4区物理与天体物理

Acoustical Physics Pub Date : 2025-03-07 DOI: 10.1134/S1063771024602383

V. K. Bakhtin, M. A. Garasev, S. N. Gurbatov, M. S. Deryabin, D. A. Kasyanov

{"title":"Some Peculiarities of Intense Acoustic Beam Diffraction on a Semiscreen Obstacle","authors":"V. K. Bakhtin, M. A. Garasev, S. N. Gurbatov, M. S. Deryabin, D. A. Kasyanov","doi":"10.1134/S1063771024602383","DOIUrl":"10.1134/S1063771024602383","url":null,"abstract":"Some results of a physical experiment on studying the evolution of an intense acoustic beam on a semiscreen obstacle are reported. The beam is formed by using a plane piezoceramic transducer with a center frequency of 2 MHz. The semiscreen obstacle is installed beyond the last diffraction maximum of the linear distribution of an acoustic field from the used transducer along the acoustic axis The transverse distribution of the nonlinear acoustic field is studied for different distances from the semiscreen obstacle. Initial acoustic beam intensities correspond to acoustic Reynolds numbers from 5 to 30. It is shown that evolution of the beam behind the obstacle is governed by cumulative diffraction and nonlinear effects. It is demonstrated that the transverse distribution of the acoustic field behind the obstacle strongly depends on the intensity of the beam incident on the obstacle. In particular, a strong dependence on the intensity of the incident beam is observed for the position of diffraction maxima in the transverse distribution of the acoustic beam behind the semiscreen obstacle. The effect related with the appearance of additional extrema in the transverse field distribution at different harmonics is revealed. Numerical simulation based on the Khokhlov–Zabolotskaya–Kuznetsov equation is carried out with results confirmed by experimental data.","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"70 6","pages":"933 - 939"},"PeriodicalIF":0.9,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143571052","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

Accounting for Viscous and Thermal Effects in Time Domain in Computational Acoustic Problems 计算声学问题中粘滞和热效应的时域计算

IF 0.9 4区物理与天体物理

Acoustical Physics Pub Date : 2025-03-07 DOI: 10.1134/S106377102460311X

A. I. Korolkov, A. Yu. Laptev, A. V. Shanin

引用次数: 0

Amplitude Characteristics of Rayleigh-Type Waves in Horizontally Inhomogeneous Layered Media 水平非均匀层状介质中瑞利波的振幅特性

IF 0.9 4区物理与天体物理

Acoustical Physics Pub Date : 2025-03-07 DOI: 10.1134/S106377102460178X

R. A. Zhostkov, D. A. Zharkov

引用次数: 0

Application of Spectral Proper Orthogonal Decomposition to the Analysis of Sound Field of Aeroacoustic Sources 谱固有正交分解在航空声源声场分析中的应用

IF 0.9 4区物理与天体物理

Acoustical Physics Pub Date : 2025-03-07 DOI: 10.1134/S1063771024601717

O. P. Byhckov, G. A. Faranosov

引用次数: 0

Soundscapes in the Urban Environment: Audiovisual Perception and Objective Control 城市环境中的声景：视听感知与客观控制

IF 0.9 4区物理与天体物理

Acoustical Physics Pub Date : 2025-03-07 DOI: 10.1134/S106377102460222X

L. K. Rimskaya-Korsakova, N. G. Kanev, A. I. Komkin, S. A. Shulyapov

{"title":"Soundscapes in the Urban Environment: Audiovisual Perception and Objective Control","authors":"L. K. Rimskaya-Korsakova, N. G. Kanev, A. I. Komkin, S. A. Shulyapov","doi":"10.1134/S106377102460222X","DOIUrl":"10.1134/S106377102460222X","url":null,"abstract":"The International Organization for Standardization (ISO) introduced the term “soundscape,” which defined the latter as “an acoustic environment perceived or understood by a person/people in context.” It proposed methods for quantitatively assessing human emotional reactions to a sound environment. In one of the methods, such reactions were represented as coordinates on the Pleasantness–Eventfulness plane. The pleasantness coordinate assessed how pleasant the environment was for the subject at the time of the examination, i.e., the properties of the subject, and the eventfulness coordinate assessed how eventful the environment was, i.e., the properties of the environment. The aim of this study was to verify the standard ISO method. Therefore, an audiovisual examination of the environment was carried out in different locations; pleasantness and eventfulness coordinates were calculated; acoustic and psychoacoustic characteristics of the environment were recorded and calculated, and the latter were then compared with the characteristics of soundscapes (or pleasantness and eventfulness coordinates). It was shown that a sound environment with physical characteristics higher than established sanitary standards may well be pleasant for a person. The results confirmed the validity, informativeness, and integrity of the method for assessing soundscapes, as well as its accessibility for nonprofessional experts. The characteristics of soundscapes can be used for engineering design of the sound environment of urban areas.","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"70 6","pages":"1040 - 1050"},"PeriodicalIF":0.9,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143571053","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

Morphology and Some Hearing Mechanisms of the External Ears of Bottlenose Dolphin (Tursiops truncatus) and Human Ears 宽吻海豚（Tursiops truncatus）外耳与人耳的形态及某些听觉机制

IF 0.9 4区物理与天体物理

Acoustical Physics Pub Date : 2025-03-07 DOI: 10.1134/S1063771024601523

V. A. Ryabov

{"title":"Morphology and Some Hearing Mechanisms of the External Ears of Bottlenose Dolphin (Tursiops truncatus) and Human Ears","authors":"V. A. Ryabov","doi":"10.1134/S1063771024601523","DOIUrl":"10.1134/S1063771024601523","url":null,"abstract":"A comparative analysis has been performed on the morphology and some hearing mechanisms of the evolutionary new external ears of bottlenose dolphin (Tursiops truncatus) and human ears. It has been established that the role of external hearing canals in dolphins is played by corresponding mental foramens (MF), mandibular canals (MC), and soft tissues (ST) filling them. It has been demonstrated that the hearing canals of dolphins are maximally ported out to the tip of the rostrum towards echos and sounds reflected from underwater objects, in contrast to the hearing canals of humans, which are located on the left and right sides of the head. The major factors influencing the mechanisms of the formation of unique features in the spatial sound localization of dolphins are asymmetry in the architecture of their hearing canals, rostrum, and skull. However, for humans, these mechanisms are caused by the symmetric location of hearing canals on the left and right sides of the head. The morphology of the external ears of dolphins is adapted to utilize the destructive interference of reflected coherent interferences with the purpose of improving the signal/reflected interferences ratio. In general, the specific features of dolphin and human hearing cause fundamental distinctions in the morphology and auditory mechanisms of their external ears.","PeriodicalId":455,"journal":{"name":"Acoustical Physics","volume":"70 6","pages":"1058 - 1068"},"PeriodicalIF":0.9,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143571054","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

On Estimating the Porosity of Metals Obtained by Hot Isostatic Pressing Based on Analysis of Structural Acoustic Noise 基于结构噪声分析的热等静压金属孔隙率估算

IF 0.9 4区物理与天体物理

Acoustical Physics Pub Date : 2025-01-24 DOI: 10.1134/S1063771024602802

A. A. Khlybov, A. L. Uglov

引用次数: 0