Results 111 to 120 of about 129,142 (267)

PT-Symmetric Acoustics

open access: yesPhysical Review X, 2014
We introduce here the concept of acoustic parity-time (PT) symmetry and demonstrate the extraordinary scattering characteristics of the acoustic PT medium.
Xuefeng Zhu   +4 more
doaj   +1 more source

Acoustic axes conditions revised [PDF]

open access: yesarXiv
The explanation of the basic acoustic properties of crystals requires a recognition of the acoustic axes. To derive the acoustic axes in a given material, one requires both a workable method and the necessary and sufficient criteria for the existence of the acoustic axes in a partial propagation direction.
arxiv  

Interactions in an acoustic world [PDF]

open access: yesarXiv, 2016
The present paper aims to complete an earlier paper where the acoustic world was introduced. This is accomplished by analyzing the interactions which occur between the inhomogeneities of the acoustic medium, which are induced by the acoustic vibrations traveling in the medium.
arxiv  

ARCHITECTURAL ACOUSTICS [PDF]

open access: yesThe Musical Quarterly, 1921
n ...
openaire   +1 more source

Propagation of Nonlinear Acoustic Waves in the Suspension of Ultrasound Contrast Agents Part I: Equation for Counting Resonance Effects and Revealing Acoustic Localization [PDF]

open access: yesarXiv, 2018
The oscillations of ultrasound contrast agents are of particular importance to the understanding of the propagation of acoustic waves in the bubbly liquids (suspensions of ultrasound contrast agents). Acoustic waves propagating in bubbly liquids have been investigated extensively.
arxiv  

Development of a compact transmitter array for the acoustic neutrino detection calibration [PDF]

open access: yesarXiv, 2011
Parametric acoustic sources technique has been widely used in several fields of acoustics, especially in underwater acoustics with the aim to obtain very directive transducers. In this paper we present different studies and developments done during last years to develop a compact acoustic calibrator that allows emitting acoustic neutrino like signal ...
arxiv  

A Data-Driven Paradigm-Based Image Denoising and Mosaicking Approach for High-Resolution Acoustic Camera [PDF]

open access: yesarXiv
In this work, an approach based on a data-driven paradigm to denoise and mosaic acoustic camera images is proposed. Acoustic cameras, also known as 2D forward-looking sonar, could collect high-resolution acoustic images in dark and turbid water. However, due to the unique sensor imaging mechanism, main vision-based processing methods, like image ...
arxiv  

Adaptive Binaural Cue-Based Amplitude Panning in Irregular Loudspeaker Configurations

open access: yesApplied Sciences
The amplitude panning method is a prevalent technique for controlling sound image directions in stereophonic and multichannel surround systems. However, conventional methods typically achieve accurate localization only with standardized loudspeaker ...
Shang Zhao, Yunjia Zhou, Zhibin Lin
doaj   +1 more source

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