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Journal articles on the topic 'Acoustic analysis'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

okcu, selen. "Realism analysis of synthesized healthcare sound environments." Journal of the Acoustical Society of America 152, no. 4 (2022): A182. http://dx.doi.org/10.1121/10.0015965.

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The acoustic qualities of healthcare sound environments can have significant influences on care providers’ ability to conduct critical sound tasks. Healthcare professionals constantly listen to the aural cues (e.g., alarms) and make critical decisions based on them. This study aims to assess the reliability of an open-source acoustical simulation tool in rendering healthcare providers’ auditory experience to enable the development of effective healthcare sound environments. The Pachyderm is developed as an open-source acoustical modeling and simulation plug-in for the Rhinoceros 3D-modeling pl

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Masih, Dawa A. A., Nawzad K. Jalal, Manar N. A. Mohammed, and Sulaiman A. Mustafa. "The Assessment of Acoustical Characteristics for Recent Mosque Buildings in Erbil City of Iraq." ARO-THE SCIENTIFIC JOURNAL OF KOYA UNIVERSITY 9, no. 1 (2021): 51–66. http://dx.doi.org/10.14500/aro.10784.

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The study of mosque acoustics, concerning acoustical features, sound quality for speech intelligibility, and additional practical acoustic criteria, is commonly overlooked. Acoustic quality is vital to the fundamental use of mosques, in terms of contributing toward prayers and worshippers’ appreciation. This paper undertakes a comparative analysis of the acoustic quality level and the acoustical characteristics for two modern mosque buildings constructed in Erbil city. This work investigates and examines the acoustical quality and performance of these two mosques and their prayer halls through

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Autio, Hanna, Mathias Barbagallo, Carolina Ask, Delphine Bard Hagberg, Eva Lindqvist Sandgren, and Karin Strinnholm Lagergren. "Historically Based Room Acoustic Analysis and Auralization of a Church in the 1470s." Applied Sciences 11, no. 4 (2021): 1586. http://dx.doi.org/10.3390/app11041586.

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Worship space acoustics have been established as an important part of a nation’s cultural heritage and area of acoustic research, but more research is needed regarding the region of northern Europe. This paper describes the historical acoustics of an important abbey church in Sweden in the 1470s. A digital historical reconstruction is developed. Liturgical material specific to this location is recorded and auralized within the digital reconstruction, and a room acoustic analysis is performed. The analysis is guided by liturgical practices in the church and the monastic order connected to it. I

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Santika, Beta Bayu, Haram Lee, Yunjin Lee, and Jin Yong Jeon. "Psychophysiological responses to changes in the acoustic design of concert halls." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 268, no. 1 (2023): 7154–59. http://dx.doi.org/10.3397/in_2023_1072.

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This study examined the psychophysiological responses of listeners to changes in the acoustic environment design of a concert hall. The research focused on both general audiences and experts in order to analyze the design of the acoustic environment based on their psychological and physiological aspects. The study involved the measurement of architectural acoustics of the hall and sound source produced through auralization based on the impulse responses collected earlier and the acoustical parameters gathered for the analysis. Changes were implemented through a refurbishment condition by the a

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McCullah-Boozer, Megan R., Brooke M. Hinds, Logan T. Mathews, et al. "A comparative analysis of rocket noise recordings from wildlife acoustic monitoring devices." Journal of the Acoustical Society of America 153, no. 3_supplement (2023): A72. http://dx.doi.org/10.1121/10.0018204.

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Remote acoustic recorders are used in wildlife passive acoustical monitoring (PAM) and species identification. Such devices are designed to be relatively low-cost, user-friendly, weather-robust, and operate for extended periods with low maintenance. Usually, the precision of these devices is limited because most applications do not require high-fidelity measurements for typical wildlife PAM applications. However, the relatively low cost and flexibility of deployment beg the question if they can accurately record other noise sources, such as rocket launches. Such a situation calls for an evalua

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Kaselouris, Evaggelos, Chrysoula Alexandraki, Yannis Orphanos, et al. "Acoustic analysis of impact sound on vibrating circular membranes." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 263, no. 3 (2021): 3378–85. http://dx.doi.org/10.3397/in-2021-2389.

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A finite element method (FEM) - boundary element method (BEM) model is developed to compute the sound generated by of a force acting on a circular membrane (drumhead). A vibro-acoustic analysis that combines modal FEM analysis, a FEM steady state dynamic analysis (SSD), considering harmonic loading and boundary element acoustics, is performed. The drumhead vibrates due to the force impact and the sound is emitted in the air. The vibration of structural response is initially computed, and the obtained results are set to be the boundary conditions of the acoustic analysis in the vibro-acoustic s

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Wang, Guo, Yibin Wang, Yongzhi Min, and Wu Lei. "Blind Source Separation of Transformer Acoustic Signal Based on Sparse Component Analysis." Energies 15, no. 16 (2022): 6017. http://dx.doi.org/10.3390/en15166017.

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In the acoustics-based power transformer fault diagnosis, a transformer acoustic signal collected by an acoustic sensor is generally mixed with a large number of interference signals. In order to separate transformer acoustic signals from mixed acoustic signals obtained by a small number of sensors, a blind source separation (BSS) method of transformer acoustic signal based on sparse component analysis (SCA) is proposed in this paper. Firstly, the mixed acoustic signals are transformed from time domain to time–frequency (TF) domain, and single source points (SSPs) in the TF plane are extracted

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Duran, Sebastian, Martyn Chambers, and Ioannis Kanellopoulos. "An Archaeoacoustics Analysis of Cistercian Architecture: The Case of the Beaulieu Abbey." Acoustics 3, no. 2 (2021): 252–69. http://dx.doi.org/10.3390/acoustics3020018.

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The Cistercian order is of acoustic interest because previous research has hypothesized that Cistercian architectural structures were designed for longer reverberation times in order to reinforce Gregorian chants. The presented study focused on an archaeoacacoustics analysis of the Cistercian Beaulieu Abbey (Hampshire, England, UK), using Geometrical Acoustics (GA) to recreate and investigate the acoustical properties of the original structure. To construct an acoustic model of the Abbey, the building’s dimensions and layout were retrieved from published archaeology research and comparison wit

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SAHER, Konca, Ayca SENTOP-DUMEN, Hakika SEZGIN, Sezin NAS, and Dilara KELLE. "Insights from the "Acoustics Workshop in Educational Buildings" by Turkish Acoustical Society." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 270, no. 1 (2024): 10017–21. http://dx.doi.org/10.3397/in_2024_4345.

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This paper focuses on "Acoustics Workshop in Educational Buildings" organized by the Turkish Acoustical Society as part of International Noise Awareness Day 2023 Activities. The workshop brought together 34 participants, including designers, acoustic experts, teachers, and health and occupational safety professionals. Through interdisciplinary discussions, participants identified and prioritized acoustic problems, expectations and requirements for educational buildings, focusing on improving the quality of education. The workshop unfolded in two stages: firstly, participants were grouped by pr

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Marunin, Mikhail V., and Nataliya V. Polikarpova. "Polarization of Acoustic Waves in Two-Dimensional Phononic Crystals Based on Fused Silica." Materials 15, no. 23 (2022): 8315. http://dx.doi.org/10.3390/ma15238315.

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The two-dimensional square-lattice phononic crystal is one of the recently proposed acoustic metamaterials. Strong anisotropic propagation of elastic waves makes the material promising for various potential applications in acoustics and acousto-optics. This paper presents a study of the propagation of elastic waves in two-dimensional phononic crystals based on fused silica. The band structures of a phononic crystal are obtained by solving the wave equation in its variational form by the finite element method. The main phononic crystal acoustic characteristics that are of practical interest in

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Zhang, Guo Jun, and Yun Ju Yan. "Applications of Statistical Energy Analysis in Influencing Factors Analysis of Aircraft Vibro-Acoustic Response Characteristics." Applied Mechanics and Materials 300-301 (February 2013): 810–13. http://dx.doi.org/10.4028/www.scientific.net/amm.300-301.810.

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The SEA model of hypersonic aircraft is established based on statistical energy analysis (SEA) theory. Three parameters of the SEA model are established by the theory and experiential formula. According to damping loss factors of model subsystem and acoustic absorptivity of cavity, sensitivity analysis of vibro-acoustic response is discussed. The effect that division way of plate subsystem and material structure cause to vibro-acoustic response is analyzed. The analysis results show that the material structure, damping loss factors and material type have the great effect on the characteristics

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Zhou, Shu Wen, and Si Qi Zhang. "Structural-Acoustic Analysis of Automobile Passenger Compartment." Applied Mechanics and Materials 236-237 (November 2012): 175–79. http://dx.doi.org/10.4028/www.scientific.net/amm.236-237.175.

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Besides the performances of handling, stability, ride comfort, power and fuel economy, the sound pressure levels in the automobile passenger compartments heavily influence the customer’s purchasing decision. The interior acoustics of automobile passenger compartment was analyzed in this paper. The frequency response analysis was performed on the vehicle body due to road roughness. The frequency response of vehicle body’s output spectrum, nodes’ velocity is used as the boundary condition of the acoustic cavity. With boundary element method and acoustic transfer vector method, the panel acoustic

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WALSH, TIMOTHY, GARTH REESE, CLARK DOHRMANN, and JERRY ROUSE. "FINITE ELEMENT METHODS FOR STRUCTURAL ACOUSTICS ON MISMATCHED MESHES." Journal of Computational Acoustics 17, no. 03 (2009): 247–75. http://dx.doi.org/10.1142/s0218396x0900394x.

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In this paper, a new technique is presented for structural acoustic analysis in the case of nonconforming acoustic–solid interface meshes. We first describe a simple method for coupling nonconforming acoustic–acoustic meshes, and then show that a similar approach, together with the coupling operators from conforming analysis, can also be applied to nonconforming structural acoustics. In the case of acoustic–acoustic interfaces, the continuity of acoustic pressure is enforced with a set of linear constraint equations. For structural acoustic interfaces, the same set of linear constraints is use

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Hovem, Jens M., and Hefeng Dong. "Understanding Ocean Acoustics by Eigenray Analysis." Journal of Marine Science and Engineering 7, no. 4 (2019): 118. http://dx.doi.org/10.3390/jmse7040118.

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Acoustics is important for all underwater systems for object detection, classification, surveillance systems, and communication. However, underwater acoustics is often difficult to understand, and even the most carefully conducted measurements may often give unexpected results. The use of theory and acoustic modelling in support of measurements is very important since theory tends to be better behaved and more consistent than experiments, and useful to acquire better knowledge about the physics principle. This paper, having a tutorial flair, concerns the use of ray modelling and in particular

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Jalil, Nurul Amira Abd, Nazli Bin Che Din, and Nila Inangda Manyam Keumala Daud. "A Literature Analysis on Acoustical Environment in Green Building Design Strategies." Applied Mechanics and Materials 471 (December 2013): 138–42. http://dx.doi.org/10.4028/www.scientific.net/amm.471.138.

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Acoustic quality is important in ensuring a healthy and workable working environment. One of green buildings main objective is to reduce the building impact on human health and performance. This was emphasized in most green building rating system under its requirement for Indoor Environmental Quality (IEQ). IEQ highlights the four main points for achieving an improved indoor environment: indoor air quality, acoustics, visual comfort (lighting) and thermal comfort. Although acoustics was mentioned in the IEQ criteria, according to previous surveys and studies; acoustics quality in green buildin

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Amran, M. Mohd, M. Shaiful Rizal, I. Maznan, et al. "Evaluation of Sound Comfort in Examination Hall Using Acoustical Environmental Analyses." Applied Mechanics and Materials 315 (April 2013): 825–29. http://dx.doi.org/10.4028/www.scientific.net/amm.315.825.

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Acoustics environmental analyses were conducted in the unoccupied examination hall at Universiti Tun Hussein Onn Malaysia (UTHM), in order to determine the acoustical environment which reflects to sound comfort during sitting exam. The acoustic parameters that measured are background noise level, sound pressure level and reverberation time. The analysis result of untreated wall condition (without absorbent material) was revealed poor while treated wall condition (with absorbent material) revealed the improvement result. Installation of absorbent material on the wall and speakers rearrangement

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Shi, Wen Ku, Guang Ming Wu, Zhi Yong Chen, and Nian Cheng Guo. "Prediction and Analysis of Vehicle Cab Interior Noise Based on Structure-Acoustic Coupling." Advanced Materials Research 424-425 (January 2012): 637–40. http://dx.doi.org/10.4028/www.scientific.net/amr.424-425.637.

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To study the vibration characteristics of the vehicle’s cab, finite element model of the cab was established and structural modal analysis was made. According to the internal structure of the cab, acoustic finite element modal of the cab including the seats was built and cavity acoustics modal analysis was carried out. Based on the structural modal and acoustic model of the cab, the coupled acoustic-structure model was carried. The acoustic response of the cab was calculated by mode-superposition

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Lai, Heather L., Anne C. Balant, and Chih-Yang Tsai. "Machine learning for analysis of wind farm noise." Journal of the Acoustical Society of America 155, no. 3_Supplement (2024): A278. http://dx.doi.org/10.1121/10.0027495.

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Two challenges associated with analyzing acoustical data from wind farms are: 1) separating turbine sounds from environmental sounds and 2) classifying acoustical samples into different types of wind turbine noise based on acoustic characteristics. Machine-learning methods for classifying general environmental sounds have been developed using large human classified databases (e.g., YAMNet), but only a few studies have targeted classification of wind farm noise (WFN) specifically. Techniques for classifying wind farm noise have focused on identification of amplitude modulation (AM) using both t

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Xu, Jie, Hui Li, You-Ling zhou, et al. "Performance analysis of vortex acoustic wave based on uniform circular array." Journal of Physics: Conference Series 2078, no. 1 (2021): 012069. http://dx.doi.org/10.1088/1742-6596/2078/1/012069.

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Abstract As a carrier for information and energy, acoustic waves have been applied in underwater communication widely, however, the narrow band and low transmission speed are the main problems. Whether in the field of optics or electromagnetic waves, the orbital angular momentum (OAM) represents the natural properties of the spiral phase structure. By introducing the OAM into the acoustics field, the transmission capacity and spectrum efficiency of the underwater acoustic communication system can be expanded. Based on the analysis and detection of the vortex acoustic wave generated by the circ

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Yaman, Muammer. "Application of Acoustic Analysis with BIM and Prediction of Reverberation Time." Architecture, Civil Engineering, Environment 18, no. 1 (2025): 87–95. https://doi.org/10.2478/acee-2025-0007.

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Abstract Building Information Modeling (BIM) enables collaborative data transfer between architects and engineers throughout the entire building's life cycle. While BIM examines physical parameters and management processes, it presents challenges in architectural acoustic analysis. This study aims to evaluate acoustic effects and perform room acoustic analyses in BIM tools that enable significant productivity gains in the construction industry and digitally support the planning, construction, and operation of structures. The research focuses on the prediction of the reverberation time, which i

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Belsak, Ales, and Jurij Prezelj. "Acoustic Damage Analysis of a Gear System." Key Engineering Materials 488-489 (September 2011): 787–90. http://dx.doi.org/10.4028/www.scientific.net/kem.488-489.787.

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In diagnostics, noise can be a very reliable way of defining the condition of mechanical systems. There are different methods to visualise the noise source. Primarily, they deal with a specific noise source in a specific acoustic environment. This paper presents a visualization method of complex noise sources, using an acoustic camera. This method makes it possible to visualise all types of different complex noise sources; a special acoustic algorithm is applied for this purpose. Also, it is possible to observe various transient acoustical phenomena.

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Griesinger, David H. "Acoustic analysis." Journal of the Acoustical Society of America 93, no. 4 (1993): 2256. http://dx.doi.org/10.1121/1.406647.

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Tronchin, Lamberto, and Antonella Bevilacqua. "3D Acoustic Map Analysis of the National Theatre of Zagreb." Applied Sciences 14, no. 11 (2024): 4365. http://dx.doi.org/10.3390/app14114365.

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Rapid technological advances in recent decades have led researchers to refine the accuracy of their studies. In the field of acoustics, the impact of new devices is noticeable, especially in the investigations of cultural heritage buildings. The selection of a seat in theatres and concert halls has always been a concern, since the live experience of artistic performance depends on the quality of hearing and sight view. This paper deals with the elaboration of 360° acoustic maps made in the National Theatre of Zagreb, one of the opera theatres investigated with the Sipario project. The analysis

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Ballard, Megan, Preston S. Wilson, and Mark F. Hamilton. "Acoustical oceanography curriculum at The University of Texas at Austin." Journal of the Acoustical Society of America 156, no. 4_Supplement (2024): A31. https://doi.org/10.1121/10.0034997.

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The acoustical oceanography (AO) curriculum at The University of Texas at Austin (UT) consists a number of courses and thesis research, which often includes field work. The core course is EE/ME 384N-5, Underwater Acoustics, which covers acoustic properties of the ocean, propagation, reflection, reverberation, scattering and target strength, ocean noise, array and signal processing and basic sonar design. The course is offered in alternate years and is cross-listed as both an electrical and mechanical engineering course. Prior to this, students usually take two semesters of physical acoustics:

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Xu, Guo Liang, Qi Wei He, Shao Chun Ding, and Hai Bo Wan. "Effects of Quay Wall and Seabed Reflection on the AUV Acoustic Radiation Test Analysis." Applied Mechanics and Materials 599-601 (August 2014): 922–26. http://dx.doi.org/10.4028/www.scientific.net/amm.599-601.922.

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To analyze effects of quay environment on the AUV radiated acoustic field test, the PNAH (PNAH: planar near-field acoustical holography) was used to simulate acoustic field. By simulating the free and non-free acoustic field and comparing amplitudes and angles of complex sound pressure, Analyze effects of quay wall and seabed reflection on the AUV radiated acoustic field test to determine the standard of quay wall and seabed environment which meets testing. The work would provide a certain reference for the AUV radiated acoustic field test.

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Hafdaoui, Hichem, and Djamel Benatia. "Comparative between (LiNbO3) and (LiTaO3) in detecting acoustics microwaves using classification." International Journal of Artificial Intelligence (IJ-AI) 8, no. 1 (2019): 33–43. https://doi.org/10.11591/ijai.v8.i1.pp33-43.

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Our work is mainly about detecting acoustics microwaves in the type of BAW (Bulk acoustic waves), where we compared between Lithium Niobate (LiNbO3) and Lithium Tantalate (LiTaO3), during the propagation of acoustic microwaves in a piezoelectric substrate. In this paper, We have used the classification by Probabilistic Neural Network (PNN) as a means of numerical analysis in which we classify all the values of the real part and the imaginary part of the coefficient attenuation with the acoustic velocity for conclude whichever is the best in utilization for generating bulk acoustic waves. This

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Deng, Jiang Hua, Jun Hong Dong, and Guang De Meng. "Sound Source Identification and Acoustic Contribution Analysis Using Nearfield Acoustic Holography." Advanced Materials Research 945-949 (June 2014): 717–24. http://dx.doi.org/10.4028/www.scientific.net/amr.945-949.717.

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The main goal of the present paper is to provide a method of source identification. Firstly, statistically optimal near-field acoustical holography (SONAH) techniques are applied to locate sound sources with the reflected sound field. In the presence of reflection plane parallel and perpendicular to the source plane, the incoming wave and reflected waves are separated based on the acoustic superposition principle and acoustic mirror image principle to satisfy the condition of the sound sources reconstruction using SONAH. Secondly, contribution of noise source to the special field point is anal

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Runge, Keith, and Susan Beck. "Seismic Sensing Analysis With Geometric Phase: From Land to Sea." Marine Technology Society Journal 59, no. 1 (2025): 59–61. https://doi.org/10.4031/mtsj.59.1.5.

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Abstract In September 2023, the National Science Foundation funded a new 5-year Science and Technology Center (STC) at the University of Arizona called the New Frontiers of Sound (NewFoS). The mission of the NewFoS STC is to unite a diverse and inclusive community who reveals the full realm of possibilities for topological acoustics and create unprecedented acoustic technology for U.S. competitiveness and positive social impacts. NewFoS achieves its mission, in part, by researching three problem-driven projects. These include using acoustic waves and their phases as analogues of quantum inform

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Shin, Sungjin, Geunhwan Kim, YoungSang Hwang, Juho Kim, and Youngmin Choo. "Effective feature fusion via analysis of quantitative similarity matrices among various acoustic features for underwater active target detection." Journal of the Acoustical Society of America 154, no. 4_supplement (2023): A340. http://dx.doi.org/10.1121/10.0023731.

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For underwater active target detection, using conventional machine learning technique is limited and unsuitable because of small training data samples and diversity of environment. Therefore, to apply conventional machine learning for underwater acoustics target detection, three methodologies can be manipulated (1) feature, (2) architecture, and (3) learning strategy. In this paper, we implement various acoustic features in terms of feature similarity and feature fusion. From numerous studies in field of acoustics, various acoustic feature extraction methods have been proposed such as Mel-freq

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Liu, Wang Sheng, Ya An Li, Lin Cui, and Ming Huan Wang. "The Mutual Impedance Analysis of a Broadband Dense Plane Array." Advanced Materials Research 443-444 (January 2012): 1019–25. http://dx.doi.org/10.4028/www.scientific.net/amr.443-444.1019.

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Due to the mutual radiation impedance may influence acoustics performance of a broadband dense plane array seriously, the expression of mutual radiation impedance among the transducers is developed according to the definition of mutual radiation impedance based on BEM（Boundary Element Method）. BEM model is established for acoustic radiation of a broadband dense plane array with nine elements. Sound pressure distribution of the nine-element array is solved using SYSNOISE software. And mutual radiation impedances are calculated on the condition of knowing surface normal velocity. Acoustic perfor

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Tang, Xiaoning, Xiansheng Zhang, Xingmin Zhuang, Huiping Zhang, and Xiong Yan. "Acoustical analysis of corduroy fabric for sound absorption: Experiments and simulations." Journal of Industrial Textiles 48, no. 1 (2017): 201–20. http://dx.doi.org/10.1177/1528083717725912.

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Corduroy fabrics have been widely used in interior decoration currently. This work mainly investigated the acoustical properties of corduroy fabrics in relation to air permeability and airflow resistance. Five specimens with similar surface density and different wale width are used. The results indicated that corduroy fabrics with thicker wale width exhibited higher air permeability and lower airflow resistance. Furthermore, the increased width of wale is beneficial to improve the acoustic absorption of corduroy fabric. Two models based on air permeability and airflow resistance are taken to c

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Di Loreto, Samantha, Mariano Pierantozzi, Valter Lori, and Fabio Serpilli. "Impact of Architectural Styles on Acoustic Characteristics in Selected European Churches." Architecture 5, no. 1 (2025): 5. https://doi.org/10.3390/architecture5010005.

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This study explores the acoustic properties of European Churches, influenced by architectural design, historical context, and spatial configurations. A comparative analysis of 83 Churches from different regions and periods combines literature reviews and empirical data to understand the interplay between architecture and acoustics. Key geometric parameters—volume, surface area, length, height, and aisle count—were compared with acoustic metrics to provide a comprehensive view of these sacred spaces. The study identified the key factors influencing acoustic characteristics, uncovering significa

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Rodrigues, Alfredo, Ashwin Dias, and Freddy Saddik. "Analysis, design, and installation of vibration isolation for lightweight helipads." Journal of the Acoustical Society of America 155, no. 3_Supplement (2024): A333. http://dx.doi.org/10.1121/10.0027715.

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This case study discusses the design and manufacturing steps for the installation of a vibration isolation solution for two lightweight helidecks installed on the rooftop of an existing medical center building. The design stage involved the analysis of the relevant information, involving several specialties, such as Acoustics (for sources of vibration and acoustic performance requirements), Heliport Design[AR1] (for the type of aircraft, MTOW, number of supports, static and dynamic loads), and Structural (for the types of connections to the existing building structure). A collaborative effort

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Dias, Ashwin, Alfredo Rodrigues, and Freddy Saddik. "Analysis, Design & Installation of Vibration Isolation for Lightweight Helipads." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 269, no. 2 (2024): 355–70. http://dx.doi.org/10.3397/nc_2024_0045.

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This case study discusses the design and manufacturing steps for the installation of a vibration isolation solution for two lightweight helidecks installed on the rooftop of an existing medical center building. The design stage involved the analysis of the relevant information, involving several specialties, such as Acoustics (for sources of vibration and acoustic performance requirements), Heliport Design (for the type of aircraft, MTOW, number of supports, static and dynamic loads) and Structural (for the types of connections to the existing building structure). A collaborative effort betwee

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Weyna, Stefan, Witold Mickiewicz, Michał Pyła, and Michał Jabłoński. "Experimental Acoustic Flow Analysis Inside a Section of an Acoustic Waveguide." Archives of Acoustics 38, no. 2 (2013): 211–16. http://dx.doi.org/10.2478/aoa-2013-0025.

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Abstract Noise propagation within ducts is of practical concern in many areas of industrial processes where a fluid has to be transported in piping systems. The paper presents experimental data and visualization of flow in the vicinity of an abrupt change in cross-section of a circular duct and on obstacles inside where the acoustic wave generates nonlinear separated flow and vortex fields. For noise produced by flow wave of low Mach number, laminar and turbulent flows are studied us- ing experimental sound intensity (SI) and laser particle image velocimetry (PIV) technique adopted to acoustic

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Melnyk, Mykhaylo, Roman Holyaka, Andriy Kernytskyy, Roman Vynarovych, and Mykhailo Shvarts. "Synthesis of a macromodel for a virtual signal simulator of adaptive acoustics." Vìsnik Nacìonalʹnogo unìversitetu "Lʹvìvsʹka polìtehnìka". Serìâ Ìnformacìjnì sistemi ta merežì 17 (June 2025): 203–13. https://doi.org/10.23939/sisn2025.17.203.

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This work is dedicated to the development of a macromodel for the virtual signal simulator of adaptive acoustics, Data@Sim, based on the formal analogy method. The structure of modeling electro- acoustic processes in adaptive acoustics tasks and approaches to the unification of research on electrical and acoustic signals are presented. An algorithm for synthesizing virtual signals that accounts for temporal parameters of sound wave propagation and attenuation, as well as noise and interference effects, is proposed. The model is implemented in the SPICE environment and enables verification of m

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Teixeira, João Paulo, Nuno Alves, and Paula Odete Fernandes. "Vocal Acoustic Analysis." International Journal of E-Health and Medical Communications 11, no. 1 (2020): 37–51. http://dx.doi.org/10.4018/ijehmc.2020010103.

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Vocal acoustic analysis is becoming a useful tool for the classification and recognition of laryngological pathologies. This technique enables a non-invasive and low-cost assessment of voice disorders, allowing a more efficient, fast, and objective diagnosis. In this work, ANN and SVM were experimented on to classify between dysphonic/control and vocal cord paralysis/control. A vector was made up of 4 jitter parameters, 4 shimmer parameters, and a harmonic to noise ratio (HNR), determined from 3 different vowels at 3 different tones, with a total of 81 features. Variable selection and dimensio

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Hayashi, Takuro, Akihiko Enamito, Yuzo Yoshida, and Ryoichi Takahashi. "Structure-Acoustic Coupled Analysis using Acoustic Modal Analysis Method. Acoustic Field Analysis on Magnetic Resonance Imaging System." Transactions of the Japan Society of Mechanical Engineers Series C 60, no. 571 (1994): 856–61. http://dx.doi.org/10.1299/kikaic.60.856.

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Nazeer, Ammar, Niaz Bahadur Khan, Emad Uddin, et al. "Hydrodynamic and hydro acoustic analysis of marine propeller in off design flow conditions." PLOS ONE 20, no. 3 (2025): e0320435. https://doi.org/10.1371/journal.pone.0320435.

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This study provides a comprehensive analysis of the INSEAN E-779A four-bladed marine propeller, addressing both hydrodynamic and hydroacoustic aspects. Employing unsteady Reynolds-Averaged Navier-Stokes (RANS) simulations with the k-ω SST turbulence model for hydrodynamics and the Ffowcs Williams-Hawking acoustic analogy for acoustics. A wide range of operational conditions are examined by varying the advance ratio from 0.6 to 0.9 and flow incidence angle from 0 to 40 degrees. Computation of hydrodynamic coefficients across spatial directions provides insight into loading impacts on performanc

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Kawazoe, Yoshiyuki, and Hiroyuki Tanabe. "Acoustic Analysis for Urban Design Evaluation." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 268, no. 8 (2023): 174–84. http://dx.doi.org/10.3397/in_2023_0043.

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Japanese townscapes have changed historically, and those changes have been inherited as distinctive streetscapes in various districts. This is a study that analyzes the characteristics of landscapes in each district based not on visual characteristics but on acoustic characteristics. Specifically, we analyzed the characteristics of each reverberation time and frequency in areas with historical landscapes such as Tsukishima and Nippori in Tokyo. We were able to grasp the finishing materials and architectural forms as acoustics, and were able to capture the characteristics of the street spaces i

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Holik, John, Tuende Szalay, Duy D. Nguyen, and Catherine Madill. "Advancing acoustical analysis: A suite of acoustic research-level measurement tools for professional and clinical applications." Journal of the Acoustical Society of America 154, no. 4_supplement (2023): A59. http://dx.doi.org/10.1121/10.0022791.

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This presentation showcases the work of our research group in developing a suite of research-level acoustic measurement tools aimed at bridging the gap between cutting-edge research and practical applications clinical settings. Over the last four years over 100 Speech language Pathologists and Ear, Nose and Throat surgeons internationally have completed our course “Using acoustic analysis to assess and treat voice disorders in clinical and research settings.” This course has focused on advanced acoustic measurement techniques with a freeware (PRAAT) for specific application to voice disorder.

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Ramírez, David, Sergio Castiñeira-Ibáñez, Jose Maria Bravo-Plana-Sala, Juan Vicente Sánchez-Pérez, and Rubén Picó. "Analysis of the interaction of helmholtz resonators in periodic acoustic metamaterials depending on its orientation with the acoustic source." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 263, no. 6 (2021): 215–26. http://dx.doi.org/10.3397/in-2021-1369.

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Acoustic screens based on sonic crystals constitute one of the most promising technological bets of recent years in the field of environmental acoustics. Sonic crystals are defined as new materials formed by arrays of acoustic scatterers embedded in air. The design of these screens is made using powerful simulation models that provide reliable results without the need of expensive experimental testing. This project applies the finite elements method in order to analise an acoustic barrier that includes (Helmholtz) resonators in its scatterers, and studies the interference of the sonic crystal

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Brentner, Kenneth S. "Direct numerical calculation of acoustics: solution evaluation through energy analysis." Journal of Fluid Mechanics 254 (September 1993): 267–81. http://dx.doi.org/10.1017/s0022112093002125.

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The propagation of acoustic energy from a sound source to the far field is a fundamental problem of acoustics. In this paper the use of computational fluid dynamics (CFD) to directly calculate the acoustic field is investigated. The two-dimensional, compressible, inviscid flow about an accelerating circular cylinder is used as a model problem. The time evolution of the energy transfer from the cylinder surface to the fluid, as the cylinder is moved from rest to some non-negligible velocity, is shown. Energy is the quantity of interest in the calculations since various components of energy have

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Trenkel, Verena M., Nils Olav Handegard, and Thomas C. Weber. "Observing the ocean interior in support of integrated management." ICES Journal of Marine Science 73, no. 8 (2016): 1947–54. http://dx.doi.org/10.1093/icesjms/fsw132.

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Abstract Active- and passive-acoustic methods are widely used tools for observing, monitoring, and understanding marine ecosystems. From 25 to 28 May 2015, 214 scientists from 31 nations gathered for an ICES symposium on Marine Ecosystem Acoustics (SoME Acoustics) to discuss three major themes related to acoustic observations of marine ecosystems: (i) recent developments in acoustic and platform technologies; (ii) acoustic characterisation of aquatic organisms, ecosystem structure, and ecosystem processes; and (iii) contribution of acoustics to integrated ecosystem assessments and management.

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Yan, Jin, Jiangfeng Li, Lvlong Zou, Dapeng Zhang, Cheng Wang, and Zhi Tang. "Acoustic Characteristics Analysis of Double-Layer Liquid-Filled Pipes Based on Acoustic–Solid Coupling Theory." Applied Sciences 13, no. 19 (2023): 11017. http://dx.doi.org/10.3390/app131911017.

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Based on the theory of acoustic–solid coupling, the phase velocity-thickness product of a double-layer liquid-filled pipeline is analyzed, and the dispersion relationship between angular frequency and wavenumber–thickness product is analyzed, providing a theoretical basis for ultrasonic guided wave detection. The wave number analytical expression of the double-layer liquid-filled pipeline is constructed, and the dispersion relationship of the double-layer liquid-filled pipeline under different frequency–thickness products and wavenumber–thickness products is calculated through parameter scanni

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Wen, Qingwei. "Fourier transformation for acoustic: Principle & applications." Theoretical and Natural Science 10, no. 1 (2023): 115–22. http://dx.doi.org/10.54254/2753-8818/10/20230326.

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A The Fourier transform has a wide range of applications in daily life, including physics, signal processing, acoustics etc. The topic of this article is to demonstrate the principle and applications of the Fourier transform in acoustics through theoretical derivation. The paper first derived the basic formula of the Fourier Transform and the related seven theorems. Then the paper detailed the research of Fourier Transform in underwater acoustic pulse signal detection technology. Finally, the application of Fourier Transform in the defect detection algorithm of MEMS acoustic films was detailed

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Leete, Kevin M., Kent L. Gee, Junhui Liu, and Alan T. Wall. "Near-field acoustical holography and acoustic power analysis of a simulated, highly heated supersonic jet." Journal of the Acoustical Society of America 151, no. 3 (2022): 1989–2001. http://dx.doi.org/10.1121/10.0009827.

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Although near-field acoustical holography (NAH) and acoustic intensity analysis have previously been used to investigate the apparent jet noise sources produced by military aircraft, explicit connections to supersonic jet characteristics cannot be made due to a lack of information about the exhaust plume. To begin to bridge this gap and better understand the source information yielded by NAH, the current study instead applies NAH to a virtual measurement of the near-field pressures of a highly heated laboratory-scale supersonic jet generated by large-eddy simulation (LES). The holographic reco

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Majeed, Ishrat, and Er Jasdeep Singh. "Design and Performance Analysis of Underwater Acoustic Sensor Networks." International Journal for Research in Applied Science and Engineering Technology 10, no. 3 (2022): 294–303. http://dx.doi.org/10.22214/ijraset.2022.40599.

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Abstract: The underwater acoustic sensor network (UASN) is essential for exploration missions and observation in demanding environments. The UASN'S connection route is acoustic waves, which limits its usefulness in comparison to ground sensor networks. This is the case because to its limited capacity, latency, and significant route loss. This article provides comprehensive research of the characteristics of UASN. We explore the functionality of underwater acoustic ad-hoc networks in the presence of disruptions. RF signals are used as a communication mechanism in wireless sensor networks, both

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YAMADA, Keisuke. "Coupled vibration analysis of structural-acoustic and acoustic-acoustic coupling systems." Proceedings of the Dynamics & Design Conference 2016 (2016): 342. http://dx.doi.org/10.1299/jsmedmc.2016.342.

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Kamisiński, Tadeusz, Krzysztof Brawata, Adam Pilch, Jarosław Rubacha, and Marcin Zastawnik. "Sound Diffusers with Fabric Covering." Archives of Acoustics 37, no. 3 (2012): 317–22. http://dx.doi.org/10.2478/v10168-012-0040-5.

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Abstract Fabric covering is often used by designers, as it can easily mask acoustic structures that do not match an interior. However, in the case of sound diffusers based on change in the phase of the reflected wave, the use of fabric covering is not without its effect on acoustics. It reduces the effectiveness of these structures and raises acoustic absorption. In the paper, the authors analyzed the acoustical properties of a selected fabric used to cover sound diffusers. Sound absorption and scattering coefficients for a system composed of sound diffusers and a fabric situated at different

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