Zobrazeno 1 - 10
of 980
pro vyhledávání: '"Frequency sound"'
Publikováno v:
JPPPF: Jurnal Penelitian & Pengembangan Pendidikan Fisika, Vol 10, Iss 1, Pp 123-138 (2024)
The sound wave experiment in class XI high school physics learning did not go according to the planned mandate of the 2013 curriculum. Based on observations in five high schools, high school physics KITs are not yet complete and in numbers limited ph
Externí odkaz:
https://doaj.org/article/7d56253e4dfe4ddaaf9f3a32a4cc18fa
Publikováno v:
Journal of Mechanical Engineering, Vol 73, Iss 1, Pp 197-208 (2023)
The dynamic load generated by traffic has a negative impact not only on human health and a well-being, but also on the lifetime of building structures. The article deals with the proposal of the prognostic vibro-acoustic analysis methodology of the b
Externí odkaz:
https://doaj.org/article/5e4367ea29464c69a33fc00cf826d5ec
Autor:
Ya-jun Xin, Rui-ning Huang, Peng Li, Quan Qian, Qun Yan, Yong-tao Sun, Qian Ding, Yu-jie Huang, Shu-liang Cheng
Publikováno v:
Results in Physics, Vol 54, Iss , Pp 107151- (2023)
Labyrinthine acoustic metamaterials are good choices for realizing sound insulation, acoustic stealth, and acoustic lenses by virtue of their stable performance and rich modes. We design a labyrinthine acoustic metamaterial with eight resonance units
Externí odkaz:
https://doaj.org/article/f6437601162649cc99969f1b70c4ef01
Autor:
Bangyan Duan, Kefan Wu, Xiaoyang Chen, Jinyan Ni, Xin Ma, Weishuai Meng, Kwok‐ho Lam, Ping Yu
Publikováno v:
Advanced Electronic Materials, Vol 9, Iss 8, Pp n/a-n/a (2023)
Abstract With the rapid development of micro‐energy harvesting technology, noise has great potential as a new type of micro‐energy source by developing a high‐performance acoustic energy harvester (AEH). Nevertheless, the challenges of harvesti
Externí odkaz:
https://doaj.org/article/7f01977183e14066841e29539260c18a
Publikováno v:
Applied Physics Express, Vol 17, Iss 8, p 084001 (2024)
We proposed a tunable high-order micro-perforated panel metamaterial for broadband absorption, in which the energy dissipation modes is reconstructed by the cavity partition plates. Owing to the more degrees of freedom in impedance design, the metama
Externí odkaz:
https://doaj.org/article/3e7ea8a31f1242898bfd9b3c36401f00
Publikováno v:
Applied Physics Express, Vol 17, Iss 7, p 077001 (2024)
By embedding center-supported graded-circular-plates (CS-GCPs) into an elastomer, a deep-subwavelength and hydrostatic-pressure-resistant meta-absorber was designed and manufactured for sound absorption (SA) under hydrostatic pressure. The meta-absor
Externí odkaz:
https://doaj.org/article/53ac5a6f62a14f4f9d0919d26ba0bb8a
Akademický článek
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Akademický článek
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Publikováno v:
Frontiers in Physics, Vol 11 (2023)
Beamforming technology with spherical microphone arrays (SMAs) is often applied for localizing and identifying noise sources in airplane cabins, automobiles, and submarines. The performance of a SMA signal processing algorithm depends on its physical
Externí odkaz:
https://doaj.org/article/c7dec19e7a8d45f38ddc7f52c9b1f1ce
Publikováno v:
Archives of Acoustics, Vol vol. 47, Iss No 1, Pp 113-124 (2022)
Hydroacoustic projectors are useful for generating low frequency sounds in water. Existing works on hydroacoustic projectors require two significant enhancements, especially for designers. First, we need to understand the influence of important proje
Externí odkaz:
https://doaj.org/article/a5bfb44923ed478a83e72db85e098066