Analysis of acoustic field characteristics of mesoscale eddies throughout their complete life cycle by Xiaodong Ma, Lei Zhang, Weishuai Xu, Maolin Li

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Underwater acoustic OFDM channel equalization based on virtual time reversal mirror by Yan-ling YIN, Gang QIAO, Song-zuo LIU

“…To solve the problem of the severe inter-symbol interference of orthogonal frequency division multiplexing (OFDM) communication caused by underwater acoustic multipath channel,a virtual time reversal channel equalization scheme was proposed.VTRM was able to shorten the channel impulse response and alleviate the phase distortion caused by the acoustic channel for its characteristic of the temporal compression and phase conjugation in frequency domain.The matching pursuit (MP) algorithm was applied to estimate the channel impulse response which could estimate the channel amplitude,time delay and phase accurately.It provided the channel information for the VTRM channel equalization.It also improved a lot compared to the traditional matching correlation channel estimation method which couldn't estimate the channel phase and the estimation precision was low.The simulation,pool trail and Songhua lake experiment show that the performance of VTRM channel equalization is better than that of the PTRM and LS channel equalization in the OFDM underwater acoustic communication.…”
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Characterization of Acoustic Emission Parameters during Fracture Process of Siltstone with Prefabricated Void by Xiaorong Liu, Lulin Zheng, Hengyi He, Qing Qiu, Ziqi Liu, Xuefeng Li, Lin Yan, Gang Huang

“…According to the statistical characteristics of acoustic emission, the damage law of siltstone specimens with prefabricated holes was explored from the microscopic point of view and the damage effect of drilling on siltstone specimens reflected by the acoustic emission phenomenon was revealed. …”
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Sound pressure-dependent acoustic absorption by perforated rigid-frame porous materials by Cavalieri Théo, Van Damme Bart

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An Optimality-Theoretic Analysis of the Acquisition of English Sentence Stress Based on Acoustic Data by Wen Ji, Yun Liu

“…Optimality Theory has a dramatic impact on most areas in linguistics besides phonology. The acoustic software Praat is chosen to collect and label data as the basis of the empirical method. …”
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Investigation of Energy Mechanism and Acoustic Emission Characteristics of Mudstone with Different Moisture Contents by Jingdong Jiang, Jie Xu

“…Stress-strain relations and acoustic emission (AE) characteristics of the deformation and failure of rock specimens were analyzed. …”
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‘Making audible to one a roar of sound where others find perfect stillness’: Soundscape in George Eliot’s The Lifted Veil and the physiological acoustics by Lilia Miroshnychenko

“…The article suggests how the ideas in physiological acoustics summed up and further developed by Hermann von Helmholtz, a German physicist, whose figure won popularity among Victorian intellectuals from the middle of the century, could be appropriate to George Eliot’s early writing. …”
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Defining Stress Thresholds of Granite Failure Process Based on Acoustic Emission Activity Parameters by Xingdong Zhao, Lei Deng, Jitao Xu

“…Stress sensor and dynamic strain gauge are used to measure the load, longitudinal, and lateral deformation of rock in real time. The acoustic emission characteristic parameters of rock fracture process are obtained by using the acoustic emission system. …”
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Characterization and Classification of Modes in Acoustic Emission Based on Dispersion Features and Energy Distribution Analysis by M.A. Torres-Arredondo, C.-P. Fritzen

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Research on Acoustic Emission and Electromagnetic Emission Characteristics of Rock Fragmentation at Different Loading Rates by Fujun Zhao, Yu Li, Zhouyuan Ye, Yong Fan, Siping Zhang, Haifan Wang, Yonghong Liu

“…The relationships among the generation of acoustic emission, electromagnetic emission, and the fracture stress of rock grain are investigated, which are based on the mechanism of acoustic emission and electromagnetic emission produced in the process of indenting rock. …”
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Newest Measurements of Hubble Constant from DESI 2024 Baryon Acoustic Oscillation Observations by Wuzheng Guo, Qiumin Wang, Shuo Cao, Marek Biesiada, Tonghua Liu, Yujie Lian, Xinyue Jiang, Chengsheng Mu, Dadian Cheng

“…In this Letter, we use the latest results from the Dark Energy Spectroscopic Instrument (DESI) survey to measure the Hubble constant. Baryon acoustic oscillation (BAO) observations released by the DESI survey, allow us to determine H _0 from the first principles. …”
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Optimization design of an acoustic cover layer for a cylindrical cavity based on porous materials by Bohan ZHANG, Jili RONG, Xiuyan CHENG

“…During the launch and flight of carrier rockets, the acoustic and vibrational excitations generated by the external environment pose significant threats to their internal payloads. …”
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The Research on Improved Companding Transformation for Reducing PAPR in Underwater Acoustic OFDM Communication System by Jinqiu Wu, Gang Qiao, Xiaofei Qi

“…To solve the problem of the high peak-to-average power ratio (PAPR) in Orthogonal Frequency Division Multiplexing (OFDM) for the underwater acoustic communication system, the paper offers a method of reducing PAPR which combines the amplitude limiting and the improved nonlinear transformation. …”
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Sensitivity Analysis of the Surface Acoustic Wave Sensor towards Size-Distributed Particulate Matter by Jian Yang, Jianan Lu, Shanmeng Zhang, Dong Guan

“…To study the sensitivity of the surface acoustic wave (SAW) sensor towards particulate matter (PM), an analytic model has been built based on single particle perturbation theory of full size range and the lognormal size distribution of the PM. …”
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Acoustic emission characteristics and damage constitutive model of fractured sandstone under uniaxial compression by Qiang Liu, Chao Pan, Lin Yan, Xuguang Wang, Shujian Li, Juncai Cao

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A Composite Matching Layer with Anti-Reflection Characteristics for Broadband Acoustic Scattering Reduction by Shande Li, Xiaoxun Wu, Jinxiu Duan, Shuai Yuan, Cun Wang, Yane Ma, Zhifu Zhang

“…The variation trends of reflectance are deeply investigated. The superior acoustic scattering reduction performance suggests that the matching layer possesses potential for acoustic imaging equipment and acoustic stealth.…”
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Dust Acoustic Shock Waves in Strongly Coupled Dusty Plasmas with Superthermal Electrons and Ions by Hamid Reza Pakzad

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The effect of temperature constraints on the treatment of tumors using focused ultrasound-induced acoustic streaming by Sebastian E. N. Price, Magnus Aa. Gjennestad, Signe Kjelstrup, Rune Hansen

“…The aim of this work is to investigate the possibility to induce acoustic streaming in a tumor. Two tumor cases (breast and abdomen) are simulated to find the acoustic streaming and temperature rise, while varying the focused ultrasound transducer radius, frequency, and power for a constant duty cycle (1%). …”
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Acoustic Emission and Failure Modes for Coal-Rock Structure under Different Loading Rates by Ning Wang, Yingqian Xu, Dengyuan Zhu, Nan Wang, Benfu Yu

“…Considering the combined coal-rock structure for coal bumps, failure process and acoustic emission (AE) characteristics of combined coal-sandstone samples under different loading rates were studied by uniaxial compression tests, and three basic failure modes and bump proneness for coal-rock structure were obtained. …”
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A New Uncertain Analysis Method for the Prediction of Acoustic Field with Random and Interval Parameters by Mingjie Wang, Zhimin Wan, Qibai Huang

“…For the frequency response analysis of acoustic field with random and interval parameters, a nonintrusive uncertain analysis method named Polynomial Chaos Response Surface (PCRS) method is proposed. …”
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