Results 31 to 40 of about 1,827,815 (335)
Acoustical properties of double porosity granular materials [PDF]
, 2011 Granular materials have been conventionally used for acoustic treatment due to their sound absorptive and sound insulating properties. An emerging field is the study of the acoustical properties of multiscale porous materials.
Umnova, O, Venegas, R
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Materials & Design, 2019 Reticulated foams are widely used in noise control applications. However, difficulties in controlling the foaming process makes it difficult to control the microstructure and consequently the absorption characteristics of stochastic foams.
Sagar Deshmukh +2 more
doaj +1 more source
Performance of T-shape barriers with top surface covered with absorptive quadratic residue diffusers [PDF]
, 2008 A previous paper [Applied Acoustics 66 (2005) 709–730] has shown that adding a quadratic residue diffuser (QRD) to the top of a T-shape barrier can provide better barrier performance than an equivalent purely absorptive barrier.
Lam, YW, Monazzam, M
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Acoustic Absorption of Natural Fiber Composites [PDF]
Journal of Engineering, 2016 The current study is a bibliographic observation on prevailing tendencies in the development of acoustic absorption by natural fiber composites. Despite having less detrimental environmental effects and thorough availability, natural fibers are still unsuitable for wide implementation in industrial purposes.
Hasina Mamtaz +3 more
openaire +3 more sources
Sound Absorption of Hemp Fibers (Cannabis Sativa L.) Based Nonwoven Fabrics and Composites: A Review
Journal of Natural Fibers, 2022 Compared to the commonly used synthetic fibrous materials, natural fiber represents an eco-friendly solution in various engineering fields. Noise control is an important application of natural fibers due to the unique acoustic characteristics. Studies on
Jiangbo Liao +2 more
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Characteristic qualities affecting landed house prices [PDF]
, 2018 The research was conducted to find the characteristics quality of houses in Malaysia. The aim of this research was to produce the ranking characteristics of house qualities and determining its weightages.
Ahmad Saleh, Ahmad Fawwaz +3 more
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Acoustic Characterization of Sugarcane Bagasse Particleboard Panels (Saccharum officinarum L) [PDF]
Materials Research, 2015 The use of sugarcane bagasse minimizes the environmental impact and contributes to the creation of a new product with low density, good sound absorption capacity and can improve the acoustic conditions of buildings.
Sylvia Thais Martins Carvalho +5 more
doaj +2 more sources
Computing Room Acoustics Using 3D FDTD: A Cuda Approach. [PDF]
, 2011 In seeking to model realistic room acoustics, direct numerical simulation can be employed. This paper presents 3D Finite Difference Time Domain schemes that incorporate losses at boundaries and due to the viscosity of air.
Bilbao, Stefan, Webb, C.
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Applied Sciences, 2021 This study aimed to reveal the influence of sound absorption in general dwellings on the subjective evaluation of acoustics. First, a subjective experiment was conducted using a full-scale room model. The results indicate that the feelings of silence and
Kazuma Hoshi +3 more
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Broadband low-frequency sound absorption in open tunnels with deep sub-wavelength Mie resonators
Frontiers in Physics, 2022 We report both experimentally and numerically that near-perfect absorption of low-frequency sound is realized in an open tunnel embedded with two deep sub-wavelength (0.085 λ) Mie resonators. The resonators are composed of a multiple-cavity structure and
Jianping Xia +14 more
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