Results 21 to 30 of about 593,834 (310)
Low-frequency noise control using layered granular aerogel and limp porous media
, 2021 Click on the DOI link to access the conference paper (may not be free).The acoustic absorption of granular aerogel layers with a granule sizes in the range of 2 to 40 μm is dominated by narrow-banded, high absorption regions in the low-frequency range ...
Xue, Yutong +3 more
core +1 more source
Differential ultra low noise amplifier for low frequency noise measurements
AIP 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
Active noise cancellation of low frequency noise propagating in a duct
International 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
Low frequency noise in Josephson junctions [PDF]
IEEE Transactions on Magnetics, 1975 Using a high resolution SQUID voltmeter, we have measured the spectrum of low frequency voltage fluctuations across a thin-film Josephson tunnel junction biased at a constant current I greater than the junction critical current I c . We find that the frequency dependence of the voltage spectrum V^{2}(f) may be accurately represented by the power law V^{
Clarke, J., Hawkins, G.
openaire +3 more sources
Measurement of the low-frequency charge noise of bacteria
Physical Review E, 2022 Bacteria meticulously regulate their intracellular ion concentrations and create ionic concentration gradients across the bacterial membrane. These ionic concentration gradients provide free energy for many cellular processes and are maintained by transmembrane transport.
Yichao Yang +2 more
openaire +3 more sources
Low Frequency Noise of Tantalum Capacitors
Active and Passive Electronic Components, 2002 A low frequency noise and charge carriers transport mechanism analysis was performed on tantalum capacitors in order to characterise their quality and reliability.
J. Sikula +6 more
doaj +1 more source
Low-Frequency Noise in Graphene Tunnel Junctions [PDF]
ACS Nano, 2018 Graphene tunnel junctions are a promising experimental platform for single molecule electronics and biosensing. Ultimately their noise properties will play a critical role in developing these applications. Here we report a study of electrical noise in graphene tunnel junctions fabricated through feedback-controlled electroburning.
Puczkarski, P +9 more
openaire +5 more sources
Low Frequency Noise in Tantalum Capacitors
Active and Passive Electronic Components, 1987 Noise has been measured in a number of biased solid tantalum capacitors at frequencies down to 0.01 Hz. The noise current was found to have a 1/f power spectrum, and the amplitude varied with the bias voltage with a law in the range 1st to 4th power ...
D. T. Smith
doaj +1 more source
Noise 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
Low Frequency Noise Annoyance Assesment by Low Frequency Noise Rating (LFNR) Curves
Journal of Environmental Conservation Engineering, 1983 Over recent years, it has become apparent that low frequency noise annoyance is more widespread than originally believed. Annoyance has occurred where the emitted noise is unbalanced towards the low frequencies even though the dB(A) level has been low. Following laboratory experiments carried out as part of an investigation into low frequency annoyance,
Broner, N., Leventhall, H. G.
openaire +2 more sources