Results 41 to 50 of about 1,493,631 (236)
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
doaj +1 more source
Cellulose-based Material for Sound Absorption And Its Application – A Short Review [PDF]
BIO Web of Conferences, 2023 Cellulose is a natural fiber potentially used as a sound absorber material due to its excellent properties, biodegradability, and lower environmental impact than synthetic materials and can be sourced from various plant-based materials, such as wood ...
Muchlisinalahuddin +3 more
doaj +1 more source
An Analysis of Prayer Room Acoustics in the Pusdai Mosque in West Java
IOCBD 2023, 2023 : Aside from being a place for congregational prayers, the West Java Pusdai Mosque is also a center for preaching and other Islamic activities in West Java.
Fadilatun Nur Latifah +5 more
semanticscholar +1 more source
Sound absorption of acoustic resonators with oblique perforations [PDF]
Applied Physics Letters, 2020 Low-frequency airborne noise reduction is an issue of major concern in most practical cases due to the limiting space constraints. The applicability of acoustic resonators that not only work in this frequency range but can also be tuned is of great interest in many noise control applications such as muffler devices, noise barriers, or building ...
J. Carbajo +3 more
openaire +3 more sources
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
Auditorium Acoustics 2008, 2023 Two coupled volume halls for music has been accomplished in Oslo the last year where we have been acoustical consultants. Scene II (two) is a 440 seat multi purpose hall in the new Oslo Opera.
A. Buen, La Brekke
semanticscholar +1 more source
Absorption of surface acoustic waves by graphene [PDF]
AIP Advances, 2011 We present a theoretical study on interactions of electrons in graphene with surface acoustic waves (SAWs). We find that owing to momentum and energy conservation laws, the electronic transition accompanied by the SAW absorption cannot be achieved via inter-band transition channels in graphene. For graphene, strong absorption of SAWs can be observed in
W. Xu, S. H. Zhang
openaire +3 more sources
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