Sound Fields Radiated by Simple Acoustic Sources
网页2001年8月23日 · The simplest example of a monopole source would be a sphere whose radius alternately expands and contracts sinusoidally. The monopole source creates a sound wave by alternately introducing and removing fluid into the surrounding area. A boxed loudspeaker at low frequencies acts as a monopole.
Acoustofluidics for biomedical applications | Nature Reviews …
网页2022年4月21日 · By coupling acoustic waves with fluids to generate acoustic radiation forces and acoustic streaming, acoustofluidic technologies offer a contact-free method for manipulating particles and ...
Fundamentals of Acoustics: Sound Fields - OnScale
网页2021年1月28日 · When an acoustic source is emitting acoustic waves to generate a sound field, it can be separated into two distinctive zones: the near field and far field. The near field as the name suggests, is the region of space close to the emitting source.
Acoustic source localization - ScienceDirect
网页2014年1月1日 · Acoustic source can be of various kinds – (1) impact of a foreign object, (2) crack formation, such as matrix cracking and delamination in a composite material, and (3) structural element failure, such as cable failure in a bridge or failure of rebars in reinforced and pre-stressed concrete, or fiber breakage in a composite material.
Sound source localization – state of the art and new inverse …
网页2021年3月25日 · Acoustic source localization techniques in combination with microphone array measurements have become an important tool for noise reduction tasks. A common technique for this purpose is acoustic beamforming, which can be used to determine the source locations and source distribution.
Imaging acoustic sources through scattering media by using a …
网页2018年10月23日 · In the inhomogeneous medium, acoustic scattering is always a fundamental challenge for photoacoustic imaging. We implement a correlation full-matrix filter (CFMF) combing with a time reversal ...
Acoustic Source Localization – Recent Advances and ... - IEEE Xplore
网页The newest source localization techniques in anisotropic plates analyze the non-circular shapes of the wave front. Following this analysis, the acoustic source has been successfully localized in some anisotropic plates without knowing the plate properties.
Acoustic source localisation using vibroacoustic beamforming
网页2023年9月15日 · In addition to ship and vehicle detection, acoustic source localisation has been used to provide guidelines on product noise control, target selection and interference rejection for communication devices or speech recognition processing, and noise source identification for mechanical systems.
网页termed the Acoustic-Net, is proposed to locate and quantify the sound source simply using the original signals. The experiments demonstrate that the proposed method significantly improves the accuracy of sound source
Acoustic Source Localization and Beamforming: Theory and Practice
网页2003年3月30日 · We consider the theoretical and practical aspects of locating acoustic sources using an array of microphones. A maximum-likelihood (ML) direct localization is obtained when the sound source is near the array, while in the far-field case, we demonstrate the localization via the cross bearing from several widely separated arrays.
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