Results 51 to 60 of about 84,837 (199)
Study on broadband low-frequency sound insulation of multi-channel resonator acoustic metamaterials
AIP Advances, 2021 A novel acoustic metamaterial structure, made up of both resonator and multiple channels, is proposed to insulate low-frequency broadband noises. Three bandgaps with a total width of 658 Hz can be obtained below 900 Hz when the structure appears as a ...
Chi Xu +5 more
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Noise prediction considering transmitted sound from noise barriers
Nihon Kikai Gakkai ronbunshu, 2019 In the noise prediction on railway viaducts by numerical acoustic analysis, it is premised that the noise barriers have sufficient sound insulation performance.
Daigo SATO, Akira OMOTO
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AIP AdvancesIn this study, we designed a single-opening Helmholtz chamber type acoustic metamaterial with two sides. The complexity of the open channel results in the material having a low frequency of the first sound insulation peak and excellent sound insulation ...
PeiZhou Hu +5 more
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Features of sound classification scheme designated to label buildings in Lithuania
Journal of Civil Engineering and Management, 2017 In Lithuania’s case, the legal requirements for the building acoustic quality since the year 2004 has been expressed through the sound classification scheme (SCS).
Aleksandras Jagniatinskis +3 more
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Advice on standards for school premises: for local authorities, proprietors, school leaders, school staff and governing bodies [PDF]
, 2013 There are fewer regulations than previously and they are less prescriptive, allowing schools more flexibility in how they use their premises. - Many regulations state that provision must be ‘suitable’.
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Broadband sound insulation of an open duct with side-branch resonators in airflow environment
Results in PhysicsSound insulation in airflow environment has significant implications in many fields like chemical pipes, gas-wave refrigerator, and car silencers, etc. In this paper, the broadband sound insulation performance of an open duct with side-branch resonator ...
Songyi Zhang +3 more
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Simulation and Optimization of Acoustic Package of Dash Panel Based on SEA
Shock and Vibration, 2020 The instrument panel assembly is an important structure to shield powertrain noise and front wheel noise, and the instrument panel sound insulation system plays a key role in it.
Jintao Su, Ling Zheng, Jianping Lou
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, 1976 The increasing scarcity of fuels makes it imperativeto include more energy conservation features in our housing. This circular describes the design, construction, and predicted performance of a house that uses approximately one-third of the energy needed
Jones, Rudard A., Shick, Wayne L.
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, 2012 This paper analyzes the possibility of increasing the acoustic transmission loss of sound transmitted through planar or curved glass shells using attached piezoelectric macro fiber composite (MFC) actuators shunted by active circuits with a negative ...
Mokry, Pavel +2 more
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The influence of auditory feedback on speed choice, violations and comfort in a driving simulation game [PDF]
, 2011 Two experiments are reported which explore the relationships between auditory feedback (engine noise), speed choice, driving violations and driver comfort.
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