Results 31 to 40 of about 13,244 (302)
Anales (Asociación Física Argentina)The Laboratory of Acoustics and Vibrations of INTI is fine-tuning a system for determining the sound absorption coefficient in a reverberation chamber using the interrupted noise method following the guidelines of IRAM 4065:2019. The study focuses on two
F. Fernandez Criscuolo +3 more
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Analysis of Plane Waves Spectra in a Weakly-Disturbed Flat Reverberation Chamber by Information Theory Criteria [PDF]
Radioengineering, 2018 This work aims to present the impact of disturbing the stationary modes in a rectangular-shaped reverberation chamber by small-dimensioned stirrers. The study focuses on plane wave’s modeling of the electric field inside a flat cavity using information ...
K. Nafkha, H. Ragad, A. Gharsallah
doaj
Angle-Dependent Absorption of Sound on Porous Materials
Acoustics, 2020 Sound-absorbing materials are usually measured in a reverberation chamber (diffuse field condition) or in an impedance tube (normal sound incidence). In this paper, we show how angle-dependent absorption coefficients could be measured in a factory-type ...
Jose Cucharero +2 more
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Environmental and Climate Technologies, 2023 Wood charcoal is a sustainable, renewable, and environmentally friendly material with the use that the acoustic device can produce. Charcoal made of wood waste materials allows for improving indoor acoustical quality.
Khrystoslavenko Olga +1 more
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Correlation and Capacity Calculations with Reference Antennas in an Isotropic Environment
International Journal of Antennas and Propagation, 2012 A reverberation chamber is a convenient tool for over-the-air testing of MIMO devices in isotropic environments. Isotropy is typically achieved in the chamber through the use of a mode stirrer and a turntable on which the device under test (DUT) rides ...
Thorkild B. Hansen
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Buildings, 2022 In building acoustics, two different problems usually arise. There is a need to comply with established sound insulation parameters, but there are also legislative conditions concerning reverberation time.
Juan C. Rodríguez +2 more
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Field Statistics in a One-Dimensional Reverberation Chamber Model [PDF]
, 2008 This work focuses on building a fairly simple yet physically appropriate 1D model for a Reverberation Chamber which claims to be able to analytically predict the statistical behavior of such a chamber, without forsaking to the benefits of deterministic ...
Arnaut +13 more
core +3 more sources
Acoustical Modeling of Reverberation Chambers [PDF]
The Journal of the Acoustical Society of America, 1970 Critical listening tests conducted in full-scale reverberation chambers utilized in the recording industry reveal that there are often two major faults present in the decay of sound in the frequency range below 1000 Hz: (1) prolonged decay of certain axial modes resulting in a characteristic tone imparted to program materials; (2) beating between the ...
Jose C. Ortega +2 more
openaire +1 more source
Advanced Functional Materials, EarlyView.Cuttlebone‐inspired metamaterials exploit a septum‐wall architecture to achieve excellent mechanical and functional properties. This review classifies existing designs into direct biomimetic, honeycomb‐type, and strut‐type architectures, summarizes governing design principles, and presents a decoupled design framework for interpreting multiphysical ...
Xinwei Li, Zhendong Li
wiley +1 more source
Archives of AcousticsThe article presents the results of comparative studies concerning the efficiency of systems aimed at minimising the acoustic nuisance of noise generated by the railway vehicle movement.
Grzegorz KLEKOT +3 more
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