Academic literature on the topic 'Acoustic research methods'

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Journal articles on the topic "Acoustic research methods"

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Kozak, Yuriy, and Oleh Stepanov. "USING MODERN RESEARCH METHODS IN DESIGNING THE ACOUSTIC ENVIRONMENT OF THE TEMPLE COMPLEX BUILDINGS." APPLIED GEOMETRY AND ENGINEERING GRAPHICS, no. 108 (July 3, 2025): 97–107. https://doi.org/10.32347/0131-579x.2025.108.97-107.

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The article explores the creation of an acoustically favorable environment in temple buildings using modern digital modeling methods. It discusses standardized noise levels, reverberation times, speech intelligibility indices (STI, STIPA), and sound clarity metrics (C80, G, JLF). The authors highlight the importance of accounting for architectural features like apses, vaults, and domes in acoustic design. Geometric acoustics and digital auralization techniques are applied to assess sound reflection patterns and optimize wall and ceiling treatments. Particular attention is given to minimizing e
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ADETU, Alina-Elena, Cătălin ADETU, Daniel BOSNICEANU, and Mihaela-Cristiana BADEA. "INVESTIGATION OF THE ACOUSTIC PERFORMANCE OF PERFORATED STEEL INSULATION PANEL USING EXPERIMENTAL AND NUMERICAL METHODS." SCIENTIFIC RESEARCH AND EDUCATION IN THE AIR FORCE 25 (July 31, 2024): 38–46. http://dx.doi.org/10.19062/2247-3173.2024.25.4.

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Engineering acoustics is a multidisciplinary field that involves the use of mathematical and physical principles to model, analyze, design, develop, and test engineering systems, with the goal of ensuring that these systems exhibit desirable acoustical behavior. This study aimed to investigate the acoustic performance of a steel insulation panel using experimental and numerical methods. The experimental investigation involved measuring the sound pressure level at different distances and frequencies. The numerical investigation involved creating finite element models of the acoustic panel and a
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Zheng, Hong Bo, Pin Yan, and Jing Chen. "The Discussion of Acoustic Seabed Sediment Classification Methods." Applied Mechanics and Materials 226-228 (November 2012): 1811–16. http://dx.doi.org/10.4028/www.scientific.net/amm.226-228.1811.

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Acoustic seabed sediment classification method is always important research contents in marine geology and marine acoustics because of its characters of low-cost and high efficiency. At present, there are mainly three types of acoustic seabed sediment classification methods:(1) the echo signal statistical characteristics classification; (2) image texture classification; (3) submarine acoustic parameter inversion method. The principles of anterior two classification methods are similar, which is based on statistics, unknown sediment type can be concluded according to the statistical characteris
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Tlačbaba, Jaromír, Michal Černý, Antonín Přidal, and Petr Dostál. "Application of the selected physical methods in biological research." Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 61, no. 1 (2013): 215–20. http://dx.doi.org/10.11118/actaun201361010215.

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This paper deals with the application of acoustic emission (AE), which is a part of the non-destructive methods, currently having an extensive application. This method is used for measuring the internal defects of materials. AE has a high potential in further research and development to extend the application of this method even in the field of process engineering. For that matter, it is the most elaborate acoustic emission monitoring in laboratory conditions with regard to external stimuli. The aim of the project is to apply the acoustic emission recording the activity of bees in different se
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Pinchevska, O. O., O. S. Baranova, O. Y. Gorbachova, and V. M. Gandzuk. "Research of plywood quality by acoustic methods." IOP Conference Series: Materials Science and Engineering 708 (December 19, 2019): 012098. http://dx.doi.org/10.1088/1757-899x/708/1/012098.

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Zhu, Jishen. "Research progress on piezoelectric acoustic transducers: Principles, materials, performance, and applications." Journal of Physics: Conference Series 2786, no. 1 (2024): 012016. http://dx.doi.org/10.1088/1742-6596/2786/1/012016.

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Abstract Piezoelectric acoustic transducers enable the mutual conversion between mechanical energy and electrical energy. In recent years, piezoelectric transducers, as efficient and reliable sustainable energy harvesting devices, have demonstrated unique application value in various disciplines such as physics, acoustics, and engineering. This paper comprehensively reviews the current research status and future development directions of acoustic transducers. Firstly, the physical mechanism of the piezoelectric effect is thoroughly analyzed, and the basic operating mode of piezoelectric acoust
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戴, 峥. "Research on Acoustic Noise Reduction Methods for Substation." Open Journal of Acoustics and Vibration 06, no. 01 (2018): 1–7. http://dx.doi.org/10.12677/ojav.2018.61001.

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Xiao, Xuefeng, Jiashun Si, Shuaijie Liang, et al. "Preparation, Properties, and Applications of Near Stoichiometric Lithium Tantalate Crystals." Crystals 13, no. 7 (2023): 1031. http://dx.doi.org/10.3390/cryst13071031.

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Lithium tantalate crystal is widely used in optical devices, infrared detectors and surface acoustic wave devices because of its excellent piezoelectric, acousto-optic and nonlinear optical properties. The Li content of near stoichiometric lithium tantalate (NSLT) crystal is higher than that of congruent lithium tantalate (CLT) crystal. Therefore, the performance of NSLT crystal is better than that of CLT crystal in some aspects. This article reviews the physical properties, preparation methods and current research status in acoustics and optics of NSLT crystals. It also looks forward to the i
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Marushko, Yu V., and O. V. Khomych. "Peculiarities of acoustic diagnostic methods in pediatric practice (literature review, own research)." Modern pediatrics. Ukraine, no. 6(142) (October 28, 2024): 88–95. https://doi.org/10.15574/sp.2024.6(142).8895.

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Diseases of the respiratory system are among the most common among the population of different age categories. Sound, as a physical phenomenon, is the propagation of longitudinal elastic waves in a medium, for example, in the air. Waves with frequencies below 16 Hz are called infrasound, and above 20,000 Hz are called ultrasound, and these waves cannot be perceived by the human ear. That is why the study of acoustic signals is extremely important for the diagnosis and monitoring of respiratory diseases. The aim of this article is to investigate the features of the use of acoustic diagnostic me
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Jebelean, Eugen, Catalin Badea, Liana Iures, Cornel Jiva, and Ioan Borza. "Acoustical Methods Used in the Study of Concrete Durability." Applied Mechanics and Materials 430 (September 2013): 113–17. http://dx.doi.org/10.4028/www.scientific.net/amm.430.113.

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The paper presents the experimental research on concretes and in-situ research on existing reinforced concretes elements, using “Pulse Velocity Method”. The “Pulse Velocity Method” it is an acoustical method which uses the ultra-sounds with 20 to 200 kHz frequency. The in-situ acoustic results are used to establish the durability of the concrete in the tested elements.
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Dissertations / Theses on the topic "Acoustic research methods"

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Левчук, В. В., Б. С. Колупаев та О. М. Волошин. "Диссипация энергии уз-волн в гибкоцепных полимерных композитах". Thesis, Издательство СумГУ, 2012. http://essuir.sumdu.edu.ua/handle/123456789/27592.

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Peiró, Torres María del Pilar. "Research of the acoustic phenomenon produced by isolated scatterers and its applicability as a noise reducing device in transport infrastructures. Search for an optimised and sustainable design." Doctoral thesis, Universitat Politècnica de València, 2021. http://hdl.handle.net/10251/164903.

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[ES] El control de ruido ambiental es una preocupación de primera magnitud para las sociedades avanzadas, debido a los problemas derivados que ocasionan en la salud de los ciudadanos. Una de las soluciones más extendidas para el control del ruido en su fase de transmisión en la utilización de pantallas acústicas. La aparición de nuevos materiales formados por redes de dispersores acústicos aislados, denominados cristales de sonido, está revolucionando el campo del apantallamiento acústico, posibilitando el avance tecnológico de esta área. Así, en los últimos años, las pantallas acústicas basa
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He, Xiaoyin. "CHARACTERIZATION OF CORNEAL BIOMECHANICAL PROPERTIES USING EXPERIMENTAL AND COMPUTATIONAL METHODS." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1280178567.

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Ma, Congcong. "The research of acoustic resonance in the waveguide associated with Galbrun equation." Electronic Thesis or Diss., Compiègne, 2020. http://www.theses.fr/2020COMP2560.

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Dans un système ouvert bidimensionnel, lorsque l’onde acoustique se propage dans un conduit avec la présence d’un obstacle, il y aura amplification de la pression acoustique autour de l’obstacle. Les modes piégés existent autour de l’obstacle au-dessous et au-dessus de la fréquence de coupure, et ils causent des dommages considérables au système. Dans les recherches précédentes, ils se sont principalement concentrés sur la résolution de l’équation de Helmholtz, ce qui signifie que l’écoulement non-potentiel n’était pas prise en compte. L’objectif de la thèse portent sur le développement de mét
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Gärtner, Vera. "Hälsoklanger : sökandet efter ljudens och musikens goda inverkan på människan." Thesis, Kungl. Musikhögskolan, Institutionen för musik, pedagogik och samhälle, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kmh:diva-2499.

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Ljudens och musikens påverkan på människan har alltid intresserat mig i egenskap av violinbyggarmästare men också som cellopedagog. Forskningen inom detta område är starkt begränsad och rör till största delen terapeutiska metoder och då främst musikterapi. Dock använder sig musikterapeuter inte av utifrån kommande frekvenser i sitt arbete och de alternativa terapeuterna har inte vetenskapliga belägg för frekvensernas verkan. Syftet med studien har varit att utföra en grundforskning om hälsoklanger som kan inspirera till vidare forskning om hur utifrån tillförda ljud och musik påverkar människa
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Dyer, Emma. "Where do beginner readers read in the English, mainstream primary school and where could they read?" Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/278214.

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Where do beginner readers read in the English, mainstream primary school and where could they read? Emma Jane Dyer This thesis explores design for the beginner reader in Year One by evaluating existing spaces in the English primary school and imagining new ones. Three significant gaps identified in the literature of reading, the teaching of reading and school design are addressed: the impact of reading pedagogies, practices and routines on spatial arrangements for beginner readers inside and beyond the classroom; a theoretical understanding of the physical, bodily and sensory experience of the
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Hsuan-HuaHuang and 黃璿樺. "Research on Focusing of Sound Field Energyby Acoustic Contrast Control Method." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/77916172047832426417.

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Chang-Cing-Lee and 李長青. "Research on the applications of Time Reversal Method for acoustic properties in noise environment and in anechoic environment." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/63907944246674222627.

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WANG-WEI and 王為. "Research on the acoustical environment control of architecture:the evaluation on sound insulation effect of light-weight partition walls by sound intensity method." Thesis, 1990. http://ndltd.ncl.edu.tw/handle/73764707042037900099.

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Books on the topic "Acoustic research methods"

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1954-, Hopp Steven L., Owren Michael J. 1955-, and Evans Christopher Stuart, eds. Animal acoustic communication: Sound analysis and research methods. Springer-Verlag, 1997.

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White, Samuel G. Start up research effort in fluid mechanics: Research project no. 1 : advanced methods for acoustic and thrust benefits for aircraft engine nozzle : performance report-97; performance period: 06/01/96-02/28/97; NASA HQ grant, NAG-1 1835. National Aeronautics and Space Administration, 1997.

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Mei, C. Modeling of structural-acoustic interaction using coupled FE/BE method and control of interior acoustic pressure using piezoelectric actuators: Final report for the period ending August, 1997 under research grant NAG1-1684. Dept. of Aerospace Engineering, College of Engineering & Technology, Old Dominion University, 1997.

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Yacheng, Shi, and United States. National Aeronautics and Space Administration., eds. Modeling of structural-acoustic interaction using coupled FE/BE method and control of interior acoustic pressure using piezoelectric actuators: Final report for the period ending August, 1997 under research grant NAG1-1684. Dept. of Aerospace Engineering, College of Engineering & Technology, Old Dominion University, 1997.

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Yacheng, Shi, and United States. National Aeronautics and Space Administration., eds. Modeling of structural-acoustic interaction using coupled FE/BE method and control of interior acoustic pressure using piezoelectric actuators: Final report for the period ending August, 1997 under research grant NAG1-1684. Dept. of Aerospace Engineering, College of Engineering & Technology, Old Dominion University, 1997.

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Yacheng, Shi, and United States. National Aeronautics and Space Administration., eds. Modeling of structural-acoustic interaction using coupled FE/BE method and control of interior acoustic pressure using piezoelectric actuators: Final report for the period ending August, 1997 under research grant NAG1-1684. Dept. of Aerospace Engineering, College of Engineering & Technology, Old Dominion University, 1997.

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Animal acoustic communication : sound analysis and research methods. Springer, 1998.

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Evans, C. s. Animal Acoustic Communication: Sound Analysis and Research Methods. Springer-Verlag Telos, 1998.

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Animal Acoustic Communication: Sound Analysis and Research Methods. Springer London, Limited, 2012.

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National Aeronautics and Space Administration (NASA) Staff. Start up Research Effort in Fluid Mechanics. Advanced Methods for Acoustic and Thrust Benefits for Aircraft Engine Nozzle. Independently Published, 2019.

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Book chapters on the topic "Acoustic research methods"

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Zamora-Gutierrez, Veronica, M. Cristina MacSwiney G., Santiago Martínez Balvanera, and Everardo Robredo Esquivelzeta. "The Evolution of Acoustic Methods for the Study of Bats." In 50 Years of Bat Research. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-54727-1_3.

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Aggelis, Dimitrios G., Markus G. R. Sause, Pawel Packo, et al. "Acoustic Emission." In Structural Health Monitoring Damage Detection Systems for Aerospace. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-72192-3_7.

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AbstractAcoustic emission (AE) is one of the most promising methods for structural health monitoring (SHM) of materials and structures. Because of its passive and non-invasive nature, it can be used during the operation of a structure and supply information that cannot be collected in real time through other techniques. It is based on the recording and study of the elastic waves that are excited by irreversible processes, such as crack nucleation and propagation. These signals are sensed by transducers and are transformed into electric waveforms that offer information on the location and the t
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Salgado Kent, Chandra, Tiago A. Marques, and Danielle Harris. "Fundamental Data Analysis Tools and Concepts for Bioacoustical Research." In Exploring Animal Behavior Through Sound: Volume 1. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-97540-1_9.

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AbstractBioacoustics is a growing field of research in which sound is measured to gain knowledge about species’ natural history and their environments. For example, bioacousticians have been able to create phylogenies, identify populations, and estimate abundance using sound. Moreover, today, many animals are exposed to human-generated noise, which can impact animals’ behavior, ability to communicate, physiology, hearing, and, in some instances, survival. Bioacoustics, thus, is commonly used to assess and predict the impacts of anthropogenic noise on animals and their populations. The use of b
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Yao, Qiyang, Sheng Wang, Yao Chen, Yanchao Shao, and Xiaokun Fan. "A Signal Processing Approach for Fracture Inversion Technique Utilizing Acoustic Emission Signal in Shale Hydraulic Fracturing Experiment." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-2417-8_6.

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AbstractIn order to detect the fracture information inside the material, solve the problem of static flaw detection and dynamic monitoring of the material, this paper studies the processing method of acoustic emission signal based on the active excitation signal of shale surface and the data output from hydraulic fracturing test. Event detection is the preliminary signal processing, to obtain the event information conveyed by acoustic emission signal and capture the information of shale internal materials carried in signal transmission. Sound source location is calculated by dividing the unit
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Schippers, H. "Boundary-integral-equation methods for screen problems in acoustic and electromagnetic aerospace research." In Floating, Flowing, Flying. Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-017-1564-5_9.

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Godøy, Rolf Inge. "Generic Motion Components for Sonic Design." In Current Research in Systematic Musicology. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-57892-2_1.

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AbstractSonic design, understood as the activity of intentionally creating sound events, encompasses both musical craftsmanship and analytic reflection. It may include technologies for sound synthesis and processing, as well as traditional methods for sound generation by musical instruments or the human voice, and also principles of orchestration. Common to many instances of sonic design, is having acoustic components that blend with concurrent real or imagined motion sensations. Thus, sonic design can be understood as a multimodal phenomenon, yet we often lack suitable concepts for differenti
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Schoeman, Renée P., Christine Erbe, Gianni Pavan, Roberta Righini, and Jeanette A. Thomas. "Analysis of Soundscapes as an Ecological Tool." In Exploring Animal Behavior Through Sound: Volume 1. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-97540-1_7.

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AbstractSoundscapes have been likened to acoustic landscapes, encompassing all the acoustic features of an area. The sounds that make up a soundscape can be grouped according to their source into biophony (sounds from animals), geophony (sounds from atmospheric and geophysical events), and anthropophony (sounds from human activities). Natural soundscapes have changed over time because of human activities that generate sound, alter land-use patterns, remove animals from natural settings, and result in climate change. These human activities have direct and indirect effects on animal distribution
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Rudakova, Hanna, Oksana Polyvoda, Inna Kondratieva, Vladyslav Polyvoda, Antonina Rudakova, and Yuriy Rozov. "Research of Acoustic Signals Digital Processing Methods Application Efficiency for the Electromechanical System Functional Diagnostics." In Lecture Notes in Computational Intelligence and Decision Making. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-82014-5_23.

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Zhang, Wenzhong, Lucia Dunbar, and David Tice. "8 Monitoring of stress corrosion cracking of sensitised 304H stainless steel by electrochemical methods and acoustic emission." In Corrosion monitoring in nuclear systems: research and applications. CRC Press, 2017. http://dx.doi.org/10.1201/9781315140391-9.

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Korenevsky, M. L., Yu N. Matveev, and A. V. Yakovlev. "Investigation and Development of Methods for Improving Robustness of Automatic Speech Recognition Algorithms in Complex Acoustic Environments." In Proceedings of the Scientific-Practical Conference "Research and Development - 2016". Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-62870-7_2.

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Conference papers on the topic "Acoustic research methods"

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Shen, Tianhua, Baohua Li, Yuanjun Dai, and Fanglong Zhu. "Research on Low-Frequency Acoustic Source Localization Based on Bayesian Methods." In 2025 6th International Conference on Mechatronics Technology and Intelligent Manufacturing (ICMTIM). IEEE, 2025. https://doi.org/10.1109/icmtim65484.2025.11040711.

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Yang, Ying, Wenmin Wang, Zhengyun Liu, et al. "Research on fault identification methods for transmission line arc faults based on acoustic signals." In 2024 4th International Conference on Intelligent Power and Systems (ICIPS). IEEE, 2024. https://doi.org/10.1109/icips64173.2024.10899935.

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Illyashenko, Ludmila. "Spectral Boundary Integral Equation Methods for Electromagnetic Research with Different Geometrical Configurations." In 2024 IEEE 29th International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory (DIPED). IEEE, 2024. http://dx.doi.org/10.1109/diped63529.2024.10706201.

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Kiri, Alexandra, and Zoltan Weltsch. "Determination of Natural Frequencies with Acoustic Methods and their Relation to Residual Stress." In 10th International Scientific Conference on Advances in Mechanical Engineering. Trans Tech Publications Ltd, 2025. https://doi.org/10.4028/p-e4cril.

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There are number of different methods and procedures in vibration analysis, where the natural frequencies of the specimen or the system are one of the key parameters. It is known that these frequencies can change under load, for example in response to pre-stressing, but the effect of residual stresses is less known. By developing a suitable method, natural frequencies can be used to predetermine residual stress, therefore this method can be used for example predicting whether it will cause deformation during machining of a part, whether it requires increased attention or how to set the paramet
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Stutz, Colin, James Stephenson, Kyle Pascioni, and Mary Houston. "Acoustic Assessment of an MD530F Helicopter in Maneuvering Flight." In Vertical Flight Society 81st Annual Forum and Technology Display. The Vertical Flight Society, 2025. https://doi.org/10.4050/f-0081-2025-66.

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A joint acoustic flight test was conducted by NASA Langley Research Center and the U.S. Army Combat Capabilities Development Command Aviation & Missile Center, with the goal of investigating new methods for acoustic data collection. The impetus for the effort is the anticipated growth of Urban Air Mobility and Future Vertical Lift vehicles. Many of these vehicles are expected to have distributed propulsion systems that may result in unsteady vehicle state conditions even during steady flight. This work examines the acoustic measurements collected during purposefully unsteady maneuvers perf
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Somani, Anis, and Dave Kurtz. "Detecting Pinhole Leaks Using Free Swimming In-Line Acoustic Leak Detection Tool." In CORROSION 2015. NACE International, 2015. https://doi.org/10.5006/c2015-05483.

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Abstract Significant financial and environmental consequences often result from line leakage of oil product pipelines. Product can escape into the surrounding soil as even the smallest leak can lead to rupture of the pipeline. From a health perspective, water supplies may be tainted by oil migrating into aquifers. A joint academic-industry research initiative funded by (Pipeline and Hazardous Materials Safety Association) PHMSA(1) has led to the development and refinement of a free-swimming tool which is capable of detecting leaks as small as 0.01 L/min (0.03 gallons) in oil product pipelines.
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Si, Shushu, and Qing Hu. "Research on two methods of acoustic isolation." In 2016 IEEE/OES China Ocean Acoustics (COA). IEEE, 2016. http://dx.doi.org/10.1109/coa.2016.7535762.

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Kustov, O. Yu, I. V. Khramtsov, and V. V. Ershov. "COMPUTATIONAL AND EXPERIMENTAL STUDIES OF ACOUSTIC CHARACTERISTICS OF THE ACOUSTIC LINER SAMPLES AT NORMAL INCIDENCE OF A SOUND WAVE USING VARIOUS METHODS." In INTERNATIONAL CONFERENCE ON THE METHODS OF AEROPHYSICAL RESEARCH. Издательство Сибирского отделения РАН, 2022. http://dx.doi.org/10.53954/9785604788974_100.

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LIVERKO A, V., and S. SBOEV D. "ACOUSTIC NOISE IN THREE TSAGI'S TRANSONIC AND SUPERSONIC WIND TUNNELS." In 22-ST INTERNATIONAL CONFERENCE ON THE METHODS OF AEROPHYSICAL RESEARCH. Crossref, 2024. http://dx.doi.org/10.53954/9785605099659_14.

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Chuvakhov, P. V., and A. V. Fedorov. "LAMINAR-TURBULENT TRANSITION OF SUPERSONIC BOUNDARY LAYER OVER AN UNSWEPT WING DUE TO ACOUSTIC NOISE." In INTERNATIONAL CONFERENCE ON THE METHODS OF AEROPHYSICAL RESEARCH. Издательство Сибирского отделения РАН, 2022. http://dx.doi.org/10.53954/9785604788974_40.

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Reports on the topic "Acoustic research methods"

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Deryabin, I. V. Noise-absorbing panel with bypass channels. FORGING AND STAMPING PRODUCTION. MATERIAL WORKING BY PRESSURE, 2023. http://dx.doi.org/10.12731/kshpomd62023-deryabin.

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Noise, having a harmful effect on humans and the environment, forces us to search and conduct research on the development of new methods and means of noise protection. Currently, with an increasing increase in the flow of vehicles in residential areas, with the development of industrial production, the issue of noise control is becoming particularly relevant. A well-known and effective technical solution for blocking the transmission of acoustic energy is the use of noise-absorbing panels, both as part of various soundproof structures, and in the form of separate acoustic elements installed in
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Pinsky, Peter M., and Thomas J. Hughes. Research in Computational Methods for Structural Acoustics. Defense Technical Information Center, 1996. http://dx.doi.org/10.21236/ada327473.

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Bubenik, Tom, and Brian Riley. PR-186-183825-R01 Continuous Improvement of ILI Capabilities Joint Industry Project (Phase I). Pipeline Research Council International, Inc. (PRCI), 2019. http://dx.doi.org/10.55274/r0011620.

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The American Petroleum Institute (API) and Association of Oil Pipe Lines (AOPL)'s Research and Development Work Group (RDWG) and PRCI are undertaking a joint industry project to develop pull test strings and protocols to validate and test the performance specifications published for ultrasonic crack detection, electromagnetic acoustic transducer (EMAT), and spiral and circumferential magnetic flux leakage (MFL) in-line inspection (ILI) tools. The purpose of the joint industry project is to assess the current industry specifications and improve ILI crack tool capabilities. DNV GL served as the
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Wadman, Heidi, and Jesse McNinch. Use of chirp sub-bottom acoustics to assess integrity of water-control structures : Inner Harbor Navigation Canal Lock, New Orleans. Engineer Research and Development Center (U.S.), 2024. http://dx.doi.org/10.21079/11681/49198.

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The US Army Corps of Engineers (USACE)-maintained lock on the Inner Harbor Navigation Canal serves as a critical navigation link between Lake Pontchartrain to the north and the Mississippi River to the south. Extensive slumping has been observed on the earthen embankment on each side of the lock, suggesting that internal pathways for water to escape through the lock’s concrete walls or joints are present. Unfortunately, traditional methods often used to identify cracks in the concrete (e.g., sidescan sonar) or water-filled voids under or behind the structure (e.g., ground-penetrating radar) di
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Galili, Naftali, Roger P. Rohrbach, Itzhak Shmulevich, Yoram Fuchs, and Giora Zauberman. Non-Destructive Quality Sensing of High-Value Agricultural Commodities Through Response Analysis. United States Department of Agriculture, 1994. http://dx.doi.org/10.32747/1994.7570549.bard.

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The objectives of this project were to develop nondestructive methods for detection of internal properties and firmness of fruits and vegetables. One method was based on a soft piezoelectric film transducer developed in the Technion, for analysis of fruit response to low-energy excitation. The second method was a dot-matrix piezoelectric transducer of North Carolina State University, developed for contact-pressure analysis of fruit during impact. Two research teams, one in Israel and the other in North Carolina, coordinated their research effort according to the specific objectives of the proj
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POWER FLOW ANALYSIS OF BRIDGE U-RIB STIFFENED PLATES BASED ON THE CONCEPT OF STRUCTURAL INTENSITY. The Hong Kong Institute of Steel Construction, 2022. http://dx.doi.org/10.18057/icass2020.p.061.

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Due to its advantages of good mechanical properties, simple appearance and strong adaptability, the steel box girder is being widely utilized in urban bridges. The noise radiated by steel box girders subjected to vehicle impacts has the characteristics of wide-spectrum, high-magnitude and control difficulty. U-rib stiffened roof, as a part of the steel box girder, directly bears the input load, which is the basis of studying the vibration of the steel box girder. Currently, the investigation on the vibro-acoustic performance of U-rib plates is very limited. With this regard, this paper introdu
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