Results 31 to 40 of about 1,442,765 (346)

Low-frequency active noise control of an underwater large-scale structure with distributed giant magnetostrictive actuators [PDF]

open access: yes, 2017
A light and thin underwater large-plate active acoustic structure is developed that satisfies the particular requirements of high pressure resilience, low frequency and high efficiency encountered in underwater work environments.
Thomas, P. J. (Peter J.), Wang, Wenjie
core   +1 more source

Map of low‐frequency electromagnetic noise in the sky [PDF]

open access: yesGeophysical Research Letters, 2015
AbstractThe Earth's natural electromagnetic environment is disturbed by anthropogenic electromagnetic noise. Here we report the first results from an electromagnetic noise survey of the sky. The locations of electromagnetic noise sources are mapped on the hemisphere above a distributed array of wideband receivers that operate in a small aperture ...
Füllekrug, M.   +6 more
openaire   +7 more sources

Analyzing the impact of time-correlated noise on zero-noise extrapolation [PDF]

open access: yesPhys. Rev. A 106, 052406 (2022), 2022
Zero-noise extrapolation is a quantum error mitigation technique that has typically been studied under the ideal approximation that the noise acting on a quantum device is not time-correlated. In this work, we investigate the feasibility and performance of zero-noise extrapolation in the presence of time-correlated noise.
arxiv   +1 more source

Low-Frequency Noise Phenomena in Switched MOSFETs [PDF]

open access: yes, 2007
In small-area MOSFETs widely used in analog and RF circuit design, low-frequency (LF) noise behavior is increasingly dominated by single-electron effects.
Hoekstra, Eric   +7 more
core   +3 more sources

Active noise cancellation of low frequency noise propagating in a duct

open access: yesInternational Journal of Environmental Health Engineering, 2012
Aims: The object is to find a manner of reduction primary noise from a source by an electro acoustic device that cancels unwanted sound by generating an anti sound (anti noise) of equal amplitude and an opposite phase is described as an active noise ...
Farhad Forouharmajd   +3 more
doaj   +1 more source

Development and Validation of a Masking System for Mitigation of Low-Frequency Audible Noise from Electrical Substations

open access: yesApplied Sciences, 2021
Low-frequency audible noise generated by the magnetostriction effect inherent to the operation of power transformers has become a major drawback, especially in cases where the electrical substation is located in urban areas subject to strict ...
Rogerio Regazzi   +7 more
doaj   +1 more source

Noise characterization of an atomic magnetometer at sub-millihertz frequencies [PDF]

open access: yes, 2015
Noise measurements have been carried out in the LISA bandwidth (0.1 mHz to 100 mHz) to characterize an all-optical atomic magnetometer based on nonlinear magneto-optical rotation.
Budker, D.   +5 more
core   +3 more sources

Low-frequency noise in nanowires

open access: yesNanoscale, 2023
This paper reviews 40 years of research on low-frequency noise and random-telegraph noise in metallic and semiconducting nanowires.
openaire   +2 more sources

Differential ultra low noise amplifier for low frequency noise measurements

open access: yesAIP Advances, 2011
Almost all low noise voltage preamplifier suitable for application in the field of Low Frequency Noise Measurements (either commercially available or proposed in the literature) are single ended input amplifiers.
Graziella Scandurra   +2 more
doaj   +1 more source

A study on the contribution of body vibrations to the vibratory sensation induced by high-level, complex low-frequency noise

open access: yesNoise and Health, 2011
To investigate the contribution of body vibrations to the vibratory sensation induced by high-level, complex low-frequency noise, we conducted two experiments.
Yukio Takahashi
doaj   +1 more source

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