Results 1 to 10 of about 1,425,062 (351)

Acoustic higher-order topological insulator on a kagome lattice [PDF]

open access: greenNature Materials, 2018
Haoran Xue, Fei Gao, Yidong Chong
exaly   +2 more sources

Acoustic conditioning of the neonatal incubator compartment: Improvement proposal

open access: yesFrontiers in Pediatrics, 2022
The objective of this work focuses on the study of the main sources of noise associated with incubators and the acoustic effects that derive from them.
Víctor M. Rodríguez-Montaño   +6 more
doaj   +1 more source

Exploring teleaudiology adoption, perceptions and challenges among audiologists before and during the COVID-19 pandemic

open access: yesBMC Digital Health, 2023
Background The COVID-19 pandemic and its associated lockdowns accelerated the uptake of remote services, however, the integration of teleaudiology into regular clinical practice has been slow, with audiologists reporting several barriers and mixed ...
Nicky Chong-White   +3 more
doaj   +1 more source

Topological Acoustics [PDF]

open access: yesPhysical Review Letters, 2015
The manipulation of acoustic wave propagation in fluids has numerous applications, including some in everyday life. Acoustic technologies frequently develop in tandem with optics, using shared concepts such as waveguiding and metamedia. It is thus noteworthy that an entirely novel class of electromagnetic waves, known as topological edge states, has ...
Yang, Zhaoju   +6 more
openaire   +4 more sources

M-ary nonlinear sine chirp spread spectrum for underwater acoustic communication based on virtual time-reversal mirror method

open access: yesEURASIP Journal on Wireless Communications and Networking, 2021
Linear chirp spread spectrum technique is widely used in underwater acoustic communication because of their resilience to high multipath and Doppler shift.
Songzuo Liu   +5 more
doaj   +1 more source

DOA estimation algorithm based on spread spectrum sequence in low signal-to-noise ratio

open access: yesEURASIP Journal on Wireless Communications and Networking, 2022
Spread spectrum communication is a common communication method in underwater communication. Based on the space-time processor received by the array, it can filter the signals arriving along each path separately.
Feng Zhou   +4 more
doaj   +1 more source

A modified asynchronous sequential Kalman track fusion based on sound propagation time

open access: yesEURASIP Journal on Advances in Signal Processing, 2023
This paper presents a sequential Kalman asynchronous track fusion algorithm based on the effective sound velocity method proposed to deal with the problem of random asynchrony of multi-node measurement information in the distributed underwater multi ...
Xueli Sheng   +4 more
doaj   +1 more source

Slow acoustic surface modes through the use of hidden geometry

open access: yesScientific Reports, 2021
The acoustic surface modes supported by a partly covered periodic meander groove structure formed in an assumed perfectly rigid plate are investigated. This allows one to create a slower acoustic surface wave than can be achieved with the same uncovered ...
S. R. Shelley   +3 more
doaj   +1 more source

Frequency estimation for underwater CW pulse by interpolation on fractional Fourier coefficients based on amplitude ratio method

open access: yesEURASIP Journal on Advances in Signal Processing, 2023
Fast and accurate estimation of sinusoidal signals plays an important role in many fields like communications, radar, sonar, etc. In underwater signal processing applications, sinusoidal signals usually take the form of CW pulses in most practical ...
Lin Li, JingWei Yin, Xiao Han, Wei Ge
doaj   +1 more source

46th Winter School on Wave and Quantum Acoustics XLVth Jubilee Winter School on Environmental Acoustics and Vibroacoustics Szczyrk, Poland, February 27 –March 2, 2017

open access: yesArchives of Acoustics, 2017
46th Winter School on Wave and Quantum Acoustics constitutes a platform for sharing the results and achievements obtained in different branches of physical acoustics.
Winter Schools on Acoustic
doaj   +1 more source

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