Results 31 to 40 of about 1,092,924 (250)

In Memoriam Professor Andrzej RAKOWSKI

open access: yesArchives of Acoustics, 2018
prof. dr hab. Andrzej Rakowski, creator of the psychoacoustics school well-known in Poland and around the world, long-time Scientific Secretary, Chairman and Honorary Chairman of the Polish Academy of Sciences, Member and Founder of the Polish Acoustic ...
Andrzej MIŚKIEWICZ
doaj   +1 more source

Simulation of Sound Waves Using the Lattice Boltzmann Method for Fluid Flow: Benchmark Cases for Outdoor Sound Propagation. [PDF]

open access: yesPLoS ONE, 2016
Propagation of sound waves in air can be considered as a special case of fluid dynamics. Consequently, the lattice Boltzmann method (LBM) for fluid flow can be used for simulating sound propagation.
Erik M Salomons   +2 more
doaj   +1 more source

Analysis and Evaluation of Clustering Techniques Applied to Wireless Acoustics Sensor Network Data

open access: yesApplied Sciences, 2022
Exposure to environmental noise is related to negative health effects. To prevent it, the city councils develop noise maps and action plans to identify, quantify, and decrease noise pollution.
Antonio Pita   +2 more
doaj   +1 more source

Acoustical properties of some modern partitioning glass walls systems – case study [PDF]

open access: yesConstructii: Journal of Civil Engineering Research, 2014
The case study presents the results of laboratory measurements carried out for the determination of airborne sound insulation properties for various modern partition glass walls systems.
Ioana-Mihaela ALEXE   +1 more
doaj  

Modern Methods Applied in Teaching Physics

open access: yesCommunications, 2010
This paper deals with modernization of teaching acoustics. We prepared the study material with qualitative exercises. In the text we pay attention to physical and ecological aspects of sound and noise. Further we analyze sound as an example of mechanical
Miroslav Nemec
doaj   +1 more source

Underwater Acoustic Research Trends with Machine Learning: Ocean Parameter Inversion Applications

open access: yes한국해양공학회지, 2020
Underwater acoustics, which is the study of the phenomena related to sound waves in water, has been applied mainly in research on the use of sound navigation and range (SONAR) systems for communication, target detection, investigation of marine resources
Haesang Yang   +3 more
doaj   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

open access: yesAdvanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara   +8 more
wiley   +1 more source

Symmetry‐Guided Multifunctional Acoustic System Based on Mechanically Actuated Sonic Crystals

open access: yesAdvanced Engineering Materials, EarlyView.
This study presents the design, simulation, and experimental validation of amultifunctional acoustic metamaterial based on rotationally engineered sonic crystals.By tuning cylinder orientations, controllable band gaps and six distinct functionalities—including switching, topological insulation, beam splitting, and logic operations—areachieved ...
Yuanyan Zhao   +2 more
wiley   +1 more source

SOUND SYNTHESIS OF GONGS OBTAINED FROM NONLINEAR THIN PLATES VIBRATIONS: COMPARISON BETWEEN A MODAL APPROACH AND A FINITE DIFFERENCE SCHEME [PDF]

open access: yes, 2013
The sound of a gong is simulated through the vibrationsof thin elastic plates. The dynamical equations are necessarily nonlinear, crashing and shimmering being typicalnonlinear effects. In this work two methods are used tosimulate the nonlinear plates: a
Ducceschi, M.   +5 more
core  

Methods for separating the noise produced by the wheels and track during a train pass-by

open access: yesRailway Engineering Science
Rolling noise is produced by vibration of the wheels and track, induced by their combined surface roughness. It is important to know the relative contributions of the different sources, as this affects noise control strategies as well as acceptance ...
David Thompson   +6 more
doaj   +1 more source

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