Results 51 to 60 of about 129,142 (267)
Applied Sciences, 2022 This study investigates the diffraction effects of the IEC 63034 standard micro–baffle (SMB) on the frequency response (FR) measurements of microspeakers based on the extended Biot–Tolstoy–Medwin technique.
Jie Huang +3 more
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Simultaneous realization of slow and fast acoustic waves using a fractal structure of Koch curve
Scientific Reports, 2018 An acoustic metamaterial based on a fractal structure, the Koch curve, is designed to simultaneously realize slow and fast acoustic waves. Owing to the multiple transmitting paths in the structure resembling the Koch curve, the acoustic waves travelling ...
Jin Ding +4 more
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Electronics Letters, 2022 Velvet noise is a sparse ternary pseudo‐random signal containing only a small portion of non‐zero values. In this work, the derivation of the spectral properties of velvet noise is presented.
Nils Meyer‐Kahlen +2 more
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Numerical simulation of the radiation force from transient acoustic fields: Application to laser-guided acoustic tweezers [PDF]
arXiv, 2023 Using pulsed acoustic waves could provide a superior selectivity for microscale acoustic tweezers. However, the theory for the radiation force of pulsed acoustic waves has only been recently derived and no numerical implementations are available. In this paper, we present a finite-element implementation of this model to simulate the transient acoustic ...
arxiv
Acoustics of auditoriums [PDF]
Journal of the Franklin Institute, 1914 n ...
openaire +4 more sources
Applied Sciences, 2023 In this study, we propose a fast calculation method that utilizes Kirchhoff’s hypotheses and electroelasticity theory to derive the resonant frequency, antiresonant frequency, and effective electromechanical coupling coefficient of a trilaminar bending ...
Chenhui Zhu +4 more
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Multi Spherical Wave Imaging Method Based on Ultrasonic Array
Sensors, 2022 The imaging range of traditional plane wave imaging is usually limited by the directivity of the plane wave. In this paper, a multi spherical wave imaging method based on an ultrasonic array is proposed, which radiates both compression and shear waves in
Zhi-Ying Liu +3 more
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Acta Acustica, 2021 A time domain approach based on the least mean square (LMS) algorithm is applied to reconstruct the source amplitude and source distribution on a plate. For this a numerical experiment is established.
Kropp Wolfgang +3 more
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