Results 11 to 20 of about 1,225 (190)

METHOD FOR PLANE NEAR-FIELD ACOUSTIC HOLOGRAPHY BASED ON COMPRESSIVE SAMPLING AND ITS APPLICATION [PDF]

open access: yesJixie qiangdu, 2016
In traditional plane near-field acoustic holography reconstruction process,regardless of wave number domain filter or regularization method,they cannot solve their own ill-posed problem,and thus cannot improve the reconstruction accuracy.
DU Bao   +4 more
doaj   +2 more sources

High resolution near-field acoustic holography [PDF]

open access: yes, 2004
High resolution Near-field Acoustic Holography (NAH) is not a widely discussed topic in open literature. For instance articles on automotive or naval applications do not discuss resolutions beyond one centimetre. Electronic appliances on the other hand demand a high spatial resolution, since the components of printed circuit boards become smaller and ...
Scholte, R., Roozen, N.B.
openaire   +3 more sources

Numerical techniques for near-field acoustic holography [PDF]

open access: yes, 2019
Near-field acoustic holography (NAH) has proved to be an enormously successful sound source identification technique, which is widely used in field of acoustics and noise control. The work presented in this thesis aims at developing a novel method for modelling near-field acoustic holography, where the particle velocity on the surface of a vibrating ...
Abusag, NM
openaire   +2 more sources

Cell Mechanics in Cancer: Integrating Mechanotransduction Pathways Within the Tumor Microenvironment. [PDF]

open access: yesJ Cell Physiol
ABSTRACT Single‐cell mechanical properties such as stiffness, elasticity, and viscosity, are crucial in governing biological processes like migration, proliferation, and differentiation. In cancer, the mechanical properties of cells undergo significant alterations, which contribute to tumor growth, metastasis, and resistance to therapy.
Sevgi M   +7 more
europepmc   +2 more sources

Robust Acoustic Imaging Based on Bregman Iteration and Fast Iterative Shrinkage-Thresholding Algorithm

open access: yesSensors, 2020
The acoustic imaging (AI) technique could map the position and the strength of the sound source via the signal processing of the microphone array. Conventional methods, including far-field beamforming (BF) and near-field acoustic holography (NAH), are ...
Linsen Huang   +4 more
doaj   +1 more source

Compressive equivalent source method based on particle velocity measurements for near-field acoustic holography

open access: yesMeasurement + Control, 2023
In order to solve the problems of spatial resolution limit and reduce the measurement cost, the compressive sensing theory and the sparse regularization are applied to the near-field acoustic holography (NAH) technology.
Wen-Qian Jing, Guang-Sheng Liu
doaj   +1 more source

Sparse Reconstruction of Sound Field Using Bayesian Compressive Sensing and Equivalent Source Method

open access: yesSensors, 2023
To solve the problem of sound field reconstruction with fewer measurement points, a sound field reconstruction method based on Bayesian compressive sensing is proposed.
Yue Xiao   +4 more
doaj   +1 more source

Four decades of near-field acoustic holography

open access: yesThe Journal of the Acoustical Society of America, 2022
The Reflections series takes a look back on historical articles from The Journal of the Acoustical Society of America that have had a significant impact on the science and practice of acoustics.
openaire   +3 more sources

Development of double nearfield acoustic holography method (Basic experimental results)

open access: yesNihon Kikai Gakkai ronbunshu, 2019
There are several types of sound localization methods. In middle frequency around 1kHz, these methods are effective to detect the sound source location.
Masao NAGAMATSU
doaj   +1 more source

A Sound Source Identification Algorithm Based on Bayesian Compressive Sensing and Equivalent Source Method

open access: yesSensors, 2020
Near-field acoustic holography (NAH) based on equivalent source method (ESM) is an effective method for identifying sound sources. Conventional ESM focuses on relatively low frequencies and cannot provide a satisfactory solution at high frequencies.
Ming Zan   +3 more
doaj   +1 more source

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