WebOct 21, 2024 · 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 … WebOct 1, 2024 · The emergence of acoustic metasurfaces breaks the limitation of manipulating large-scale waves at subwavelength scales and enables a better ventilating capability, while there is still a problem...
Broadband ventilated meta-barrier based on the synergy of mode ...
WebDec 23, 2024 · We theoretically and experimentally propose two designs of broadband low-frequency acoustic metasurface coiled absorbers (Sample I/Sample II) for the … WebMar 29, 2024 · We report both numerical and experimental constructions of a tunnel structure with low-frequency low-reflection bidirectional sound insulation (BSI). The designed tunnel was constructed from a pair of lossy acoustic metasurfaces (AMs), which consists of six ultrathin coiled unit cells, attached on both sides. Based on the … thomas hasler architekt
Hybrid silencers with micro-perforated panels and internal partitions
WebJul 28, 2013 · This paper investigates a non-Foster wideband circuit matching technique for an electrically small antenna (ESA). By introducing a negative impedance convertor into … http://actioncommunications.com/mm5/merchant.mvc?Screen=CTGY&Category_Code=mob-base-antennas-lowband WebApr 24, 2024 · Here, we propose and demonstrate an acoustic metasurface muffler (AMM) to achieve low-frequency wideband noise elimination. In a prior study [21], it was illustrated that tunable acoustic... thomas haskins colorado