Results 31 to 40 of about 160,053 (291)

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

Acoustic modeling using the digital waveguide mesh [PDF]

open access: yes, 2007
The digital waveguide mesh has been an active area of music acoustics research for over ten years. Although founded in 1-D digital waveguide modeling, the principles on which it is based are not new to researchers grounded in numerical simulation, FDTD ...
Kelloniemi, Antti   +3 more
core   +2 more sources

Acoustic Antennas for Atmospheric Echo Sounding [PDF]

open access: yesThe Journal of the Acoustical Society of America, 1972
The successful utilization of acoustic waves for atmospheric echo sounding requires an efficient antenna, with high on-axis gain and suppressed sidelobes. Existing microwave antennas and optical searchlights have been adapted for acoustic use, and their performance measured.
F. F. Hall, J. W. Wescott
openaire   +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

Acoustic architecture before science. The case of Amsterdam's Concertgebouw

open access: yesSoundEffects, 2016
Concert halls are designed for attentively listening to music. To guarantee that the listening experience mediated by these buildings is acoustically correct, architects rely upon math- ematical formulas to measure and predict how a building will sound ...
Darryl Cressmann
doaj   +1 more source

Compressive acoustic sound speed profile estimation [PDF]

open access: yesThe Journal of the Acoustical Society of America, 2016
Ocean acoustic  sound speed   profile (SSP) estimation requires the inversion of acoustic fields using limited observations. Compressive sensing (CS) asserts that certain underdetermined problems can be solved in high resolution, provided their solutions are sparse.
Michael, Bianco, Peter, Gerstoft
openaire   +2 more sources

On the Influence of Antioxidants and Recycled MgO–C Source Material on the Mechanical Properties of Carbon‐Bonded Magnesia Refractories

open access: yesAdvanced Engineering Materials, EarlyView.
The presented study focuses on the fracture behaviour of carbon‐bonded magnesia MgO–C refractories, where environmentally friendly fructose, collagen and lignin serve as temporary binding agents. The partial substitution of the source material with recycled MgO–C reduces the fracture resistance, which can be counteracted by the additional introduction ...
Marc Neumann   +6 more
wiley   +1 more source

Modulating Sound with Acoustic Metafiber Bundles [PDF]

open access: yesScientific Reports, 2017
AbstractAcoustic metamaterials and metasurfaces provide great flexibility for manipulating sound waves and promise unprecedented functionality, ranging from transformation acoustics, acoustic cloaking, acoustic imaging to acoustic rerouting. However, the design of artificial structures with both broad bandwidth and multifunctionality remains ...
Jian-ping Xia   +2 more
openaire   +3 more sources

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