Results 21 to 30 of about 1,500,613 (303)
Research on Noise Generation Mechanism and Noise Reduction Ball Valve Measures of Ball Valve
IEEE Access, 2020 Ball valve is the core control component for flow in HVAC (Heating, Ventilation and Air Conditioning) system. And valve's flow noise is one of the key parameters to evaluate its performance.
Jin Zhang +4 more
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Molecular Filters for Noise Reduction [PDF]
Biophysical Journal, 2018 Living systems are inherently stochastic and operate in a noisy environment, yet despite all these uncertainties, they perform their functions in a surprisingly reliable way. The biochemical mechanisms used by natural systems to tolerate and control noise are still not fully understood, and this issue also limits our capacity to engineer reliable ...
Laurenti, L +3 more
openaire +5 more sources
Optimal phase space projection for noise reduction [PDF]
, 2005 In this communication we will re-examine the widely studied technique of phase space projection. By imposing a time domain constraint (TDC) on the residual noise, we deduce a more general version of the optimal projector, which includes those appearing ...
H. L. V. Trees +5 more
core +2 more sources
Directional active noise control for drone noise reduction [PDF]
JASA Express LettersDrones have become essential tools for applications ranging from aerial surveillance to last-mile delivery, raising concerns about noise pollution in populated environments.
Hanwen Bi +3 more
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Quadratic approach for single-channel noise reduction
EURASIP Journal on Audio, Speech, and Music Processing, 2020 In this paper, we introduce a quadratic approach for single-channel noise reduction. The desired signal magnitude is estimated by applying a linear filter to a modified version of the observations’ vector.
Gal Itzhak, Jacob Benesty, Israel Cohen
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Apply wavelet packet soft threshold noise reduction method to aviation gamma energy spectrum
He jishu, 2022 BackgroundWith the continuous development of nuclear technology, radioactive material exploration requires higher and higher detection accuracy of aerial gamma energy spectrometer, meanwhile, the wavelet packet soft threshold noise reduction method has ...
ZHANG Song +7 more
doaj +1 more source
Reduction of Guided Acoustic Wave Brillouin Scattering in Photonic Crystal Fibers
, 2005 Guided Acoustic Wave Brillouin Scattering (GAWBS) generates phase and polarization noise of light propagating in glass fibers. This excess noise affects the performance of various experiments operating at the quantum noise limit.
Andersen, U. L. +6 more
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Amplitude-phase decorrelation: a method for reducing intensity noise in semiconductor lasers [PDF]
, 1991 It has been shown that the method of amplitude-phase decorrelation can reduce the fundamental intensity noise floor of semiconductor laser light over a wide bandwidth by the ratio 1/(1+α^2), where α is the linewidth enhancement factor.
Newkirk, Michael A., Vahala, Kerry J.
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Study on Noise Reduction with Paving Different Low Noise Pavement Materials
Applied Sciences, 2021 This paper evaluates the amount of noise reduction when using different pavement materials in two adjacent lanes, where the close-proximity (CPX) method is introduced to analyze the tire/road noise before and after pavement maintenance.
Minmin Yuan +3 more
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Poro-Serrated trailing edge devices for airfoil self-noise reduction [PDF]
, 2015 This paper represents the continuation of the works previously published in Chong et al. (“Self-Noise Produced by an Airfoil with Nonflat Plate Trailing-Edge Serrations,” AIAA Journal, Vol. 51, No. 11, 2013, pp. 2665–2677), who used several nonflat plate
Chong, TP, Joseph, PF, Vathylakis, A
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