Results 11 to 20 of about 84,837 (199)
Acoustics, 2023 The body of a high-speed train is a composite structure composed of different materials and structures. This makes the design of a noise-reduction scheme for a car body very complex. Therefore, it is important to clarify the key factors influencing sound
Ruiqian Wang +4 more
doaj +1 more source
Sound insulation performance and modal analysis of asymmetrical insulating laminated glass
Journal of Low Frequency Noise, Vibration and Active Control, 2023 Windows are commonly the primary way for noise to enter the building environment. Most windows achieve higher sound insulation targets by simply increasing glass thickness or laminate. However, the glass thickness cannot be increased freely due to the window frame’s limitation.
Xi Zhu +4 more
openaire +2 more sources
Applied Sciences, 2022 The double-layer plate structure in passive sound insulation systems can improve the high-frequency sound insulation performance, but it is still not ideal in the low-frequency region.
Likang Wang +4 more
doaj +1 more source
Energy-Efficient Low-Complexity Algorithm in 5G Massive MIMO Systems [PDF]
, 2021 Energy efficiency (EE) is a critical design when taking into account circuit power consumption (CPC) in fifth-generation cellular networks. These problems arise because of the increasing number of antennas in massive multiple-input multiple-output ...
A. Hamzah, Shipun +6 more
core +1 more source
Low-Frequency, Open, Sound-Insulation Barrier by Two Oppositely Oriented Helmholtz Resonators
Micromachines, 2021 In this work, a low-frequency, open, sound-insulation barrier, composed of a single layer of periodic subwavelength units (with a thickness of λ/28), is demonstrated both numerically and experimentally.
Yi-Jun Guan +4 more
doaj +1 more source
Living with helicopter noise : evaluating sound insulation techniques for domestic dwellings using real helicopters [PDF]
, 2011 Specific remedial works designed to improve sound installation and reduce the noise level produced by helicopters inside dwellings are described. The theoretical problems and practical solutions to installing high performance acoustic insulation to a ...
Kerry, G, Lomax1, C, Waddington, DC
core +2 more sources
Sound Insulation Performance of Structural Wood Wall Integrated with Wood Plastic Composite
Journal of Bioresources and Bioproducts, 2019 The sound insulation performance is an important technical index for evaluating the physical property of the building wall. Three kinds of structural wood walls integrated with wood plastic composite (WPC) were designed.
Xiaojun Yang +3 more
doaj +1 more source
COMSOL-based acoustic performance analysis of combined cavity anechoic layer
Zhongguo Jianchuan Yanjiu, 2020 Objectives In view of the poor sound insulation performance and pressure resistance of anechoic layer with single cavities at low frequencies, the finite element software COMSOL is used to calculate the acoustic performance and deformation of a combined ...
KE Liju, LIU Chengyang, FANG Zhi
doaj +1 more source
Sound insulation performance optimization of lightweight sandwich panels [PDF]
Journal of Vibroengineering, 2016 Optimization of lightweight sandwich panels has been intensively studied, but optimization in terms of the acoustic objective is still a hot topic, and the influence on optimization results caused by sandwich panel geometric constraints is also rarely investigated. In this study, the optimization on lightweight sandwich panel designs is investigated by
Xiao-mei Xu +3 more
openaire +1 more source
A computationally-efficient numerical model to characterize the noise behavior of metal-framed walls [PDF]
, 2015 Architects, designers, and engineers are making great efforts to design acoustically-efficient metal-framed walls, minimizing acoustic bridging. Therefore, efficient simulation models to predict the acoustic insulation complying with ISO 10140 are needed
Arjunan, Arun +4 more
core +2 more sources