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Artykuły w czasopismach na temat „Acoustic modelling”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 25 lipca 2025

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1

Rindel, Jens Holger. "Room Acoustic Modelling Techniques: A Comparison of a Scale Model and a Computer Model for a New Opera Theatre." Building Acoustics 18, no. 3-4 (2011): 259–80. http://dx.doi.org/10.1260/1351-010x.18.3-4.259.

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Today most acoustic consultants are using room acoustic computer models as a basis for their acoustic design. However, room acoustic scale modelling is still being used for the design in some major projects, although the costs and the time needed are significantly larger than those related to computer modelling. Both techniques were used by the author in a project for a new opera theatre; first the acoustical design was based on computer simulations using the Odeon software, and next a 1:20 scale model was built and tested. In the paper the results obtained with the two different modelling tec

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T., Pazara. "Sound propagation modelling in a lecture hall." Scientific Bulletin of Naval Academy XXII, no. 2 (2019): 276–83. http://dx.doi.org/10.21279/1454-864x-19-i2-033.

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For lecture halls, intelligibility of speech is the most important aspect. To achieve a relative uniform distribution of sound among the listeners, a number of parameters must be taken into account. One method to speed up the design process of a lecture hall is to model the sound propagation in that room using computer acoustic software. In this paper, the authors have chosen a lecture hall from Naval Academy and made numerous simulations to discover what are the week points regarding the acoustics of this room. The acoustical parameters obtained from simulations are compared with the desired

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Bazaras, Jonas. "INTERNAL NOISE MODELLING PROBLEMS OF TRANSPORT POWER EQUIPMENT." TRANSPORT 21, no. 1 (2006): 19–24. http://dx.doi.org/10.3846/16484142.2006.9638035.

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The acoustic analysis of transport vehicles is presented in this article. Two types of vehicles of Russian production (TEP‐60 and M62) were selected for this research. Using ANSYS/Multiphysic software acoustic noise of different power units in the engine sector was simulated. In this paper we present the modelling results of the locomotive internal noise. In ANSYS/Multiphysic anbience the problems of acoustics are solved on the basis of harmonic response analysis by providing harmonic pressure excitation (sine type) at some points of fluid structure and obtaining the pressure distribution in t

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4

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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Smith, Michael. "Modelling approaches to multibeam echosounders for sound field characterization." Journal of the Acoustical Society of America 156, no. 3 (2024): 1552–64. http://dx.doi.org/10.1121/10.0028338.

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Concern over the impact of multibeam echosounders (MBES) on marine life has increased in recent years. A thorough impact assessment of acoustic sources requires both accurate modeling of the source and radiated sound field, and a biological assessment. The Joint Industry Program Acoustic Modelling Workshop in 2022 provided a set of verification scenarios for a deep-water MBES to compare modelling approaches and assess agreement across models. This work presents several relevant models designed to compute both the MBES beam patterns and propagated acoustic field. Key acoustic metrics used in im

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Brind, James, and Graham Pullan. "Modelling Turbine Acoustic Impedance." International Journal of Turbomachinery, Propulsion and Power 6, no. 2 (2021): 18. http://dx.doi.org/10.3390/ijtpp6020018.

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We quantify the sensitivity of turbine acoustic impedance to aerodynamic design parameters. Impedance boundary conditions are an influential yet uncertain parameter in predicting the thermoacoustic stability of gas turbine combustors. We extend the semi-actuator disk model to cambered blades, using non-linear time-domain computations of turbine vane and stage cascades with acoustic forcing for validation data. Discretising cambered aerofoils into multiple disks improves reflection coefficient predictions, reducing error by up to an order of magnitude compared to a flat plate assumption. A para

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7

Havrylko, Valeriia. "Development of a mathematical model of acoustic processes in the Opera Studio of the Kyiv Conservatory." Technology audit and production reserves 6, no. 1(80) (2024): 6–10. https://doi.org/10.15587/2706-5448.2024.316558.

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The object of this study is the acoustic characteristics of a concert hall, with a particular focus on the reverberation time, which significantly affects both the perception of sound by listeners and the performance of musicians. The study emphasises the importance of mathematical modelling of acoustic processes in concert halls, especially in optimising reverberation time. In the context of modern materials and advanced acoustic design technologies, precise calculations and analyses are required to evaluate the impact of various elements on a room’s overall acoustics. Poor design or material

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8

Bo, Elena, Louena Shtrepi, David Pelegrín Garcia, Giulio Barbato, Francesco Aletta, and Arianna Astolfi. "The Accuracy of Predicted Acoustical Parameters in Ancient Open-Air Theatres: A Case Study in Syracusae." Applied Sciences 8, no. 8 (2018): 1393. http://dx.doi.org/10.3390/app8081393.

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Nowadays, ancient open-air theatres are often re-adapted as performance spaces for the additional historical value they can offer to the spectators’ experience. Therefore, there has been an increasing interest in the modelling and simulation of the acoustics of such spaces. These open-air performance facilities pose several methodological challenges to researchers and practitioners when it comes to precisely measure and predict acoustical parameters. Therefore this work investigates the accuracy of predicted acoustical parameters, that is, the Reverberation Time (T20), Clarity (C80) and Sound

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9

Kushida, Noriyuki, and Ying-Tsong Lin. "High-performance computation toward large-scale underwater acoustics modelling." Journal of the Acoustical Society of America 153, no. 3_supplement (2023): A270. http://dx.doi.org/10.1121/10.0018814.

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The complex nature of the ocean has long presented a challenge for researchers in the field of oceanography, including in the area of underwater acoustics. As a result, significant efforts have been made to develop accurate numerical models to better understand and study the ocean. Established models such as Acoustic Toolbox and Range-dependent Acoustic Models have proven to be effective for modelling sound propagation. However, these models were designed to run on single-core computers, and there is potential to optimise their performance on modern systems. The use of General-purpose graphics

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10

Djambazov, Georgi. "Time-Dependent Numerical Modelling of Acoustic Cavitation in Liquid Metal Driven by Electromagnetic Induction." Fluids 8, no. 3 (2023): 79. http://dx.doi.org/10.3390/fluids8030079.

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The numerically simulated method of using electromagnetic field from an alternating current is a patented method to create in liquid metal, under the conditions of resonance, acoustic waves of sufficient strength to cause cavitation and implosion of gas bubbles, leading to beneficial degassing and grain refinement. The modelling stages of electromagnetics are described below along with acoustics in liquids, bubble dynamics, and their interactions. Sample results are presented for a cylindrical container with liquid aluminium surrounded by an induction coil. The possibility of establishing acou

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11

Gonçalves, João Duarte. "An ocean acoustical ray-tracing tool based on Fermat's least time principle in real a environment." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 265, no. 5 (2023): 2319–30. http://dx.doi.org/10.3397/in_2022_0332.

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Recently the Underwater Acoustics Modelling and Sonar Prediction - SeaRider tool was developed by the Portuguese Naval Academy. Based on Fermat's least-time principle, 2D and 3D models of propagation of acoustic rays in the ocean were developed. These models consist of an algebraic differential system of equations. In this work we considered additionally the possibility of calculating the trajectory, addressing the occurrence of acoustic ray reflections either on the water surface or on the ocean floor. The reflections in the boundaries were assumed specular and were modelled based on Snell's

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12

Gorska, Natalia, Egil Ona, and Rolf Korneliussen. "Acoustic backscattering by Atlantic mackerel as being representative of fish that lack a swimbladder. Backscattering by individual fish." ICES Journal of Marine Science 62, no. 5 (2005): 984–95. http://dx.doi.org/10.1016/j.icesjms.2005.03.010.

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Abstract Developing acoustic methods for the identification of fish remains a long-term objective of fisheries acoustics. The accuracy of abundance estimation may be increased when the acoustic-scattering characteristics of the fish are known, including their expected variability and uncertainty. The modelling approach is valuable during the process of interpreting multi-frequency echograms. This paper attempts to improve the understanding of sound backscattering of fish without a swimbladder, here represented by Atlantic mackerel (Scomber scombrus). Our approach includes results from modellin

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13

Larbaoui, C., R. Benlachemi, A. Boudour, and Y. Boumaiza. "Characterization of a Shape-Memory Alloy Using Acoustic Techniques and Modelling of the Acoustic Signature $V(z)$." METALLOFIZIKA I NOVEISHIE TEKHNOLOGII 45, no. 10 (2024): 1179–87. http://dx.doi.org/10.15407/mfint.45.10.1179.

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14

Kirkup. "The Boundary Element Method in Acoustics: A Survey." Applied Sciences 9, no. 8 (2019): 1642. http://dx.doi.org/10.3390/app9081642.

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The boundary element method (BEM) in the context of acoustics or Helmholtz problems is reviewed in this paper. The basis of the BEM is initially developed for Laplace’s equation. The boundary integral equation formulations for the standard interior and exterior acoustic problems are stated and the boundary element methods are derived through collocation. It is shown how interior modal analysis can be carried out via the boundary element method. Further extensions in the BEM in acoustics are also reviewed, including half-space problems and modelling the acoustic field surrounding thin screens.

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15

Et al., SURYA MOL N. V. "Acoustic And Thermal Insulation Foam Modelling and Simulation for Space Craft." Tuijin Jishu/Journal of Propulsion Technology 44, no. 3 (2023): 1156–69. http://dx.doi.org/10.52783/tjjpt.v44.i3.446.

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The basis of this project is the modelling and simulation of melamine foam and study of other acoustic and thermal insulation foams . The External Tank of rockets required insulation to maintain the cryogenic fuels, liquid hydrogen, and liquid oxygen as well as to provide additional structural integrity through launch and after release from the Orbiter. Sites for launching large rockets are commonly equipped with some sound suppression system for absorb or deflect acoustic energy produced during a rocket launch. As engine exhaust gasses exceed speed of sound, they will collide with ambient air

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16

Sedighi, Hamid M., Mickaël Lallart, and Xiaoying Zhuang. "Metamaterials: Design, modelling, simulation and implementation." Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications 236, no. 11 (2022): 2153–56. http://dx.doi.org/10.1177/14644207221137433.

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Metamaterials are a new class of man-made compound materials with exceptional properties which are not found in nature. Thanks to their superior features, they are used in a variety of fields and industries such as microwave engineering, dispersion compensation, smart antennas, sensor identification, high-frequency battlefield communications, improved ultrasonic sensors, solar energy management for high-gain antennas, remote aerospace applications, vibration control, acoustic wave guiding, and energy harvesting. The microstructures in acoustic metamaterials are locally alternating. Over the pa

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17

Papamoschou, Dimitri. "Modelling of noise reduction in complex multistream jets." Journal of Fluid Mechanics 834 (November 17, 2017): 555–99. http://dx.doi.org/10.1017/jfm.2017.730.

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The paper presents a low-order prediction scheme for the noise change in multistream jets when the nozzle geometry is altered from a known baseline. The essence of the model is to predict the changes in acoustics due to the redistribution of the mean flow as computed by a Reynolds-averaged Navier–Stokes (RANS) solver. A RANS-based acoustic analogy framework is developed that addresses the noise in the polar direction of peak emission and uses the Reynolds stress as a time-averaged representation of the action of the coherent turbulent structures. The framework preserves the simplicity of the L

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18

Shi, Shuangxia, Jingyu Wang, Kongchao Liu, Guoyong Jin, and Bin Xiao. "Vibro-acoustic modelling of the box structural–acoustic coupling system." Results in Physics 31 (December 2021): 104915. http://dx.doi.org/10.1016/j.rinp.2021.104915.

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19

Vorländer, Michael. "Virtual Acoustics." Archives of Acoustics 39, no. 3 (2015): 307–18. http://dx.doi.org/10.2478/aoa-2014-0036.

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Abstract Virtual Reality (VR) systems are used in engineering, architecture, design and in applications of biomedical research. The component of acoustics in such VR systems enables the creation of audio-visual stimuli for applications in room acoustics, building acoustics, automotive acoustics, environmental noise control, machinery noise control, and hearing research. The basis is an appropriate acoustic simulation and auralization technique together with signal processing tools. Auralization is based on time-domain modelling of the components of sound source characterization, sound propagat

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20

Rohan, Eduard, and Fanny Moravcová. "Acoustic streaming in porous media – homogenization based two-scale modelling." Journal of Physics: Conference Series 2647, no. 23 (2024): 232009. http://dx.doi.org/10.1088/1742-6596/2647/23/232009.

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Abstract A homogenized model of the acoustic streaming (AS) in rigid porous periodic structure is presented. Using the classical perturbation approach, the first and the second order subproblems arising from the N-S equations governing the fluid dynamics in the pores are obtained and further homogenized. The driving force of the permanent flow is obtained due to the time average of the nonlinear advection terms expressed using the first order acoustic harmonic fluctuations. Homogenization of the 1st order problem yields the dynamic Darcy flow mode governing the wave response. This is employed

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21

Ciochon, Agnieszka, and John Kennedy. "3D Printed Acoustic Materials for the Performance Enhancement of a Building Acoustics Silencer." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 268, no. 8 (2023): 206–14. http://dx.doi.org/10.3397/in_2023_0047.

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This research develops and applies novel acoustic-material solutions for the performance enhancement of a building acoustics silencer. The material performance is achieved through the design of lattices of subwavelength unit cells and resonating structures. The resulting material consists of an open pore network, which can act as a chain of resonators with multiple degrees of freedom. The geometrical designs were manufactured using fused deposition modelling. The performance enhancement was demonstrated through a comparison of an unaltered and an altered commercial silencer. The modified silen

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22

Coyle, Angus J., Md Ayub, Daniel Boettger, Manuel Cervera, and Andrew Mackinnon. "Impact of internal waves on underwater acoustic propagation." Journal of the Acoustical Society of America 154, no. 4_supplement (2023): A81. http://dx.doi.org/10.1121/10.0022867.

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The propagation of internal waves in the ocean can produce significant fluctuations in the local sound speed field. Understanding how these fluctuations affect acoustic propagation is an area of considerable interest in underwater acoustics. Previous studies have indicated that large fluctuations (of the order of 20 dB) in transmission loss (TL) of acoustic waves can occur due to focusing and defocusing effects as the acoustic waves propagate through an internal wave. This work looks to extend some of these studies by exploring the frequency and directional dependence of these fluctuations thr

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23

F. Ganji, Hamed, Viktor Kornilov, Jeroen van Oijen, Philip de Goey, and Ines Lopez Arteaga. "Assessment of The Acoustic Scattering Matrix of a Heat Exchanger Using ssCFD-LNSE Simulation." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 265, no. 4 (2023): 3657–67. http://dx.doi.org/10.3397/in_2022_0514.

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The risk of thermoacoustic instability is present in any combustion appliance. The instability results from a closed loop feedback between unsteady combustion, heat-transfer and acoustic modes of the system. To predict the system acoustics all constituting elements of the appliance need to be modelled. A heat-exchanger is the element where the gas faces complex fluid dynamics and heat transfer processes. Therefore, modelling of (thermo)-acoustic properties of a heat exchanger is challenging. In this paper, a computational approach is proposed to characterize the acoustic properties of a generi

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Layton, Martin, and Mark Gales. "Acoustic Modelling Using Continuous Rational Kernels." Journal of VLSI Signal Processing Systems for Signal, Image, and Video Technology 48, no. 1-2 (2007): 67–82. http://dx.doi.org/10.1007/s11265-006-0027-4.

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Nurminen, Markku, Maija Hyt�nen, and Eeva Sala. "Modelling the reproducibility of acoustic rhinometry." Statistics in Medicine 19, no. 9 (2000): 1179–89. http://dx.doi.org/10.1002/(sici)1097-0258(20000515)19:9<1179::aid-sim420>3.0.co;2-k.

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Morkun, V. S., N. V. Morkun, S. M. Gryshchenko, I. A. Gaponenko, А. А. Gaponenko, and Ye Yu Bobrov. "Modelling of an electromagnetic acoustic transducer." Mining Journal of Kryvyi Rih National University, no. 111 (2023): 88–95. http://dx.doi.org/10.31721/2306-5435-2023-1-111-88-95.

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Benmaghsoula, Hammou Zohra. "THE NUMERICAL SIMULATION SUPPORT TOOL FOR THE ASSESSMENT OF THE ACOUSTIC QUALITY OF WORSHIP SPACES." NUMERICAL SIMULATION SUPPORT TOOL FOR THE ASSESSMENT OF THE ACOUSTIC QUALITY OF WORSHIP SPACES 6, February (2016): 1–20. https://doi.org/10.5281/zenodo.3698540.

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<strong>ABSTRACT</strong> Because of its religious and social function, the mosque is a place of exchange and knowledge transfer of this knowledge, through the preaching of the imams in the form of speeches and reading the Qur'an during prayer. The mosques are therefore examples of public institutions where it is necessary ensure acoustic comfort, in order to obtain a good quality of listening. The mosque is also considered a building that has specific features associated with room acoustics, by its function as a place of listening; this characteristic has a direct impact on the design cho

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Hasnul Hadi, Nur Amira, Arshad Ahmad, and Olagoke Oladokun. "Modelling pressure distribution in sonicated ethanol solution using COMSOL simulation." E3S Web of Conferences 90 (2019): 02003. http://dx.doi.org/10.1051/e3sconf/20199002003.

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Ultrasound application has been reported to assist chemical processes as a result of various physiochemical effects during acoustic cavitation phenomena in a liquid. In this study, acoustic pressure distribution in ethanol solution induced by ultrasonic waves in a sonoreactor was investigated using COMSOL Multiphysics software. The variations of acoustic pressure distribution in ethanol liquid were investigated through a single-phase incompressible model developed by varying the frequency of an ultrasonic transducer. The simulation in COMSOL Multiphysics shows that the acoustic wave emitted fr

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Tang, Yongzhuang, Qidou Zhou, Xiaowei Wang, and Zhiyong Xie. "A Computational Method for Acoustic Interaction with Large Complicated Underwater Structures Based on the Physical Mechanism of Structural Acoustics." Advances in Materials Science and Engineering 2022 (December 31, 2022): 1–18. http://dx.doi.org/10.1155/2022/3631241.

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A numerical coupling approach is proposed to fast predict the acoustic radiation from a vibrating large-complicated underwater structure. In this study, the physical mechanism of sound radiation from underwater large target is used for the first time to improve the efficiency and keep the accuracy of the numerical algorithm. Although the traditional coupled finite element method/boundary element method (FEM-BEM) is accurate, it contains a large number of boundary elements and thus requires a long computation time for large-complicated structures. The research on the physical mechanism of struc

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Smirnov, Vladimir V., and Dmitriy N. Sklyar. "Development of methodological approaches to conducting monitoring of traffic noise and its assessment using acoustic modelling methods." Hygiene and sanitation 101, no. 8 (2022): 872–77. http://dx.doi.org/10.47470/0016-9900-2022-101-8-872-877.

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Introduction. At present, considerable attention is paid to the problems of noise pollution in urban and rural settlements. Transport is the main source of noise in the structure of complaints about unfavourable living conditions in dense urban areas. Material and methods. Materials for selecting the most significant criteria or grouping the objects of surveillance were in situ instrumental measurements of noise levels and the results of acoustic calculations obtained during the processing of an acoustic model. In situ measurements of noise levels were made in St. Petersburg on the territory o

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Thandar, Soe, Su Maung Su, and Nyein Oo Nyein. "Combination of Multiple Acoustic Models with Multi-scale Features for Myanmar Speech Recognition." International Journal of Computer Vol. 28, No. 1 (2018): pg 112–121. https://doi.org/10.5281/zenodo.3068569.

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We proposed an approach to build a robust automatic speech recognizer using deep convolutional neural networks (CNNs). Deep CNNs have achieved a great success in acoustic modelling for automatic speech recognition due to its ability of reducing spectral variations and modelling spectral correlations in the input features. In most of the acoustic modelling using CNN, a fixed windowed feature patch corresponding to a target label (e.g., senone or phone) was used as input to the CNN. Considering different target labels may correspond to different time scales, multiple acoustic models were trained

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Scalo, Carlo, Sanjiva K. Lele, and Lambertus Hesselink. "Linear and nonlinear modelling of a theoretical travelling-wave thermoacoustic heat engine." Journal of Fluid Mechanics 766 (February 5, 2015): 368–404. http://dx.doi.org/10.1017/jfm.2014.745.

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AbstractWe have carried out three-dimensional Navier–Stokes simulations, from quiescent conditions to the limit cycle, of a theoretical travelling-wave thermoacoustic heat engine (TAE) composed of a long variable-area resonator shrouding a smaller annular tube, which encloses the hot (HHX) and ambient (AHX) heat exchangers, and the regenerator (REG). Simulations are wall-resolved, with no-slip and adiabatic conditions enforced at all boundaries, while the heat transfer and drag due to the REG and HXs are modelled. HHX temperatures have been investigated in the range 440–500 K with the AHX temp

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ARDID, M., J. RAMIS, V. ESPINOSA, et al. "FIRST ACTIVITIES IN ACOUSTIC DETECTION OF PARTICLES IN UPV." International Journal of Modern Physics A 21, supp01 (2006): 137–41. http://dx.doi.org/10.1142/s0217751x06033519.

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The first activities related to acoustic detection of particles by DISAO research group in the Univesitat Politècnica de València are described. We are applying some techniques from physic, engineering and oceanographic acoustics to face the high energy neutrino underwater acoustic detection challenge. The work is focused mainly in two topics: design, characterization and calibration of hydrophones, and simulation of the propagation of the signal in the sea. We present also some examples for these two topics: piezoelectric modelling and transducer simulation, calibration of hydrophones using M

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Cabrera, Densil, Shuai Lu, Jonothan Holmes, and Manuj Yadav. "Sound Reflections in Indian Stepwells: Modelling Acoustically Retroreflective Architecture." Acoustics 4, no. 1 (2022): 227–47. http://dx.doi.org/10.3390/acoustics4010014.

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Retroreflection is rarely used as a surface treatment in architectural acoustics but is found incidentally with building surfaces that have many simultaneously visible concave right-angle trihedral corners. Such surfaces concentrate reflected sound onto the sound source, mostly at high frequencies. This study investigated the potential for some Indian stepwells (stepped ponds, known as a kund or baori/baoli in Hindi) to provide exceptionally acoustically retroreflective semi-enclosed environments because of the unusually large number of corners formed by the steps. Two cases—Panna Meena ka Kun

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GALIANO, I., E. SANCHIS, F. CASACUBERTA, and I. TORRES. "ACOUSTIC-PHONETIC DECODING OF SPANISH CONTINUOUS SPEECH." International Journal of Pattern Recognition and Artificial Intelligence 08, no. 01 (1994): 155–80. http://dx.doi.org/10.1142/s0218001494000073.

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The design of current acoustic-phonetic decoders for a specific language involves the selection of an adequate set of sublexical units, and a choice of the mathematical framework for modelling the corresponding units. In this work, the baseline chosen for continuous Spanish speech consists of 23 sublexical units that roughly correspond to the 24 Spanish phonemes. The process of selection of such a baseline was based on language phonetic criteria and some experiments with an available speech corpora. On the other hand, two types of models were chosen for this work, conventional Hidden Markov Mo

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Eastland, Grant. "Finite difference time domain ray-based modelling of acoustic scattering for target identification and tracking." Journal of the Acoustical Society of America 152, no. 4 (2022): A252. http://dx.doi.org/10.1121/10.0016182.

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The Finite Difference Time Domain (FDTD) method has provided a powerful technique for modelling and simulation of solutions of a variety of acoustics problems. The purpose of this investigation is to present work on the development of time-domain models of acoustic scattering from targets near a flat pressure-release boundary for use in identification and tracking from a moving receiving platform. The timing from acoustic source to reception are dependent on the location dependent sound speed profile and the specular scattering points on the target. There can be multiple specular points reveal

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Batista, Michel. "Acoustic assessment of an open-plan office environment against the newly published ISO 22955 acoustic parameters." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 265, no. 6 (2023): 1916–23. http://dx.doi.org/10.3397/in_2022_0270.

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This paper aims to assess the acoustic performance of an existing open-plan office environment with suspended sound absorbers below a hard reflective ceiling and low workstation dividers against the newly published ISO 22955 acoustic parameters. The room acoustic variables, such as sound absorption, screens between workstations, speech masking sounds and room dimensions all interact in a complex way affecting the values of single-number quantities presented in the ISO 22955 standard. In order to determine the in-situ performance, acoustic measurements were carried out on site. Odeon room acous

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Keränen, Jukka, Pekka Saarinen, and Valtteri Hongisto. "Precision of room acoustic modelling in open-plan offices." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 265, no. 4 (2023): 3677–82. http://dx.doi.org/10.3397/in_2022_0517.

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Room acoustic models are often used to predict parameters that describe acoustic conditions in various spaces, also in open-plan offices. An open-plan office of 81 m² was experimentally studied using 22 different room acoustic conditions. The conditions were built using typical absorption materials, office screens, and furniture. The acoustic conditions were measured according to ISO 3382-3. The measurements were modelled using two methods: A. room acoustic simulation software based on ray-tracing, and B. a simple empirical model. The precision was assessed by the difference of predicted and m

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Gerges, Samir N. Y., Márcio R. Kimura, and J. L. Bento Coelho. "Acoustic Modelling and Measurements of Engine Mufflers." Building Acoustics 5, no. 1 (1998): 27–38. http://dx.doi.org/10.1177/1351010x9800500103.

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Most buildings such as hospitals, hotels, governmental offices, data processing rooms, etc, are equipped with internal combustion engines, diesel motors and generators to supply energy in emergencies. These same IC engines are used for industrial applications, building services and transportation. Exhaust noise are the predominant noise source with most internal combustion engines and thus exhaust systems incorporating mufflers have been designed to reduce the noise. This paper describes the analysis of several configurations of mufflers and also presents comparisons between the results for th

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Hornikx, Maarten. "Acoustic modelling for indoor and outdoor spaces." Journal of Building Performance Simulation 8, no. 1 (2015): 1–2. http://dx.doi.org/10.1080/19401493.2015.1001616.

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Wiltshire, Michael, and Leslle Huggard. "Acoustic wave velocity modelling in sedimentary sequences." Exploration Geophysics 31, no. 1-2 (2000): 401–8. http://dx.doi.org/10.1071/eg00401.

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Gerasimov, S. I., and T. V. Sych. "Finite element modelling of acoustic emission sensor." Journal of Physics: Conference Series 881 (August 2017): 012003. http://dx.doi.org/10.1088/1742-6596/881/1/012003.

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Ratolojanahary, F. E., T. Gryba, and F. Lahatra Razafindramisa. "Contact modelling of heterojunction acoustic transport devices." IEE Proceedings - Circuits, Devices and Systems 151, no. 4 (2004): 322. http://dx.doi.org/10.1049/ip-cds:20040110.

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Umamaheswararao, Sanapala, M. N. V. S. S. Kumar, and R. Madhu. "Wireless underwater channel modelling for acoustic communication." International Journal of Computational Vision and Robotics 14, no. 5 (2024): 529–39. http://dx.doi.org/10.1504/ijcvr.2024.140827.

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Coakley, K. J., A. V. Clark, and C. S. Hehman. "Empirical modelling of electromagnetic acoustic transducer data." Measurement Science and Technology 11, no. 3 (2000): 193–200. http://dx.doi.org/10.1088/0957-0233/11/3/304.

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Boesing, Matthias, Andreas Hofmann, and Rik De Doncker. "Universal acoustic modelling framework for electrical drives." IET Power Electronics 8, no. 5 (2015): 693–99. http://dx.doi.org/10.1049/iet-pel.2014.0658.

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Boufermel, Abdennour, Nicolas Joly, and Pierrick Lotton. "Numerical modelling of acoustic streaming in resonators." Journal of the Acoustical Society of America 123, no. 5 (2008): 3707. http://dx.doi.org/10.1121/1.2935130.

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Fan, Yibo, Fengshou Gu, and Andrew Ball. "Modelling acoustic emissions generated by sliding friction." Wear 268, no. 5-6 (2010): 811–15. http://dx.doi.org/10.1016/j.wear.2009.12.010.

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Shen, W. Z., and J. N. Sørensen. "Aero-Acoustic Modelling using Large Eddy Simulation." Journal of Physics: Conference Series 75 (July 1, 2007): 012085. http://dx.doi.org/10.1088/1742-6596/75/1/012085.

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Edjeou, T., T. Gryba, V. Zhang, V. Sadaune, and J. E. Lefebvre. "Modelling of heterojunction acoustic charge transport devices." Solid-State Electronics 44, no. 7 (2000): 1127–33. http://dx.doi.org/10.1016/s0038-1101(00)00047-2.

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