Results 61 to 70 of about 7,028,550 (415)
Quantitative assessment of linear noise-reduction filters for spectroscopy [PDF]
, 2020 Linear noise-reduction filters used in spectroscopy must strike a balance between reducing noise and preserving lineshapes, the two conflicting requirements of interest.
arxiv +1 more source
Noise Reduction in ECG Signals Using Fully Convolutional Denoising Autoencoders
IEEE Access, 2019 The electrocardiogram (ECG) is an efficient and noninvasive indicator for arrhythmia detection and prevention. In real-world scenarios, ECG signals are prone to be contaminated with various noises, which may lead to wrong interpretation.
Hsin-Tien Chiang +5 more
semanticscholar +1 more source
Noise reduction with coupled prismatic tubes [PDF]
, 2000 The present investigation focuses on an accurate description of sound absorption. Within this research a new technique to create sound absorption for a predefined frequency band has been developed. Additionally, a simple and efficient numerical model for
Eerden, Fredericus Joseph Marie van der
core +7 more sources
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
doaj +1 more source
Temporal Quantum Noise Reduction Acquired by an Electron-Multiplying Charge-Coupled-Device Camera [PDF]
Opt. Express 28, 37538-37545 (2020), 2020 Electron-multiplying charge-coupled-device cameras (EMCCDs) have been used to observe quantum noise reductions in beams of light in the transverse spatial degree of freedom. For the quantum noise reduction in the temporal domain, "bucket detectors," usually composed of photodiodes with operational amplifiers, are used to register the intensity ...
arxiv +1 more source
Noise reduction mechanisms of sawtooth and combed-sawtooth trailing-edge serrations
Journal of Fluid Mechanics, 2018 Trailing-edge serrations are add ons retrofitted to wind-turbine blades to mitigate turbulent boundary-layer trailing-edge noise. This manuscript studies the physical mechanisms behind the noise reduction by investigating the far-field noise and the ...
F. Avallone +3 more
semanticscholar +1 more source
The effect of wavy leading edges on aerofoil-gust interaction noise [PDF]
, 2013 High-order accurate numerical simulations are performed to investigate the effects of wavy leading edges (WLEs) on aerofoil–gust interaction (AGI) noise.
Alex S.H. Lau +27 more
core +1 more source
Investigation and Evaluation of Adaptive Algorithms for Multichannel Active Noise Control System [PDF]
arXiv, 2023 This dissertation focuses on the investigation and evaluation of adptive algorithms for multichannel active noise control system. The aim of the research is to investigate the effectiveness of the FxLMS algorithm and the pre-trained control filter in attenuating various types of noise.
arxiv
Deep Learning Based Noise Reduction for Brain MR Imaging: Tests on Phantoms and Healthy Volunteers
Magnetic Resonance in Medical Sciences, 2019 Purpose: To test whether our proposed denoising approach with deep learning-based reconstruction (dDLR) can effectively denoise brain MR images. Methods: In an initial experimental study, we obtained brain images from five volunteers and added different ...
M. Kidoh +10 more
semanticscholar +1 more source
Proceedings of the IEEE, 2002 Different methods for removing noise contaminating time series are presented, which all exploit the underlying (deterministic) dynamics. All approaches are embedded in a probabilistic framework for stochastic systems and signals, where the two main tasks, state and orbit estimation, are distinguished. Estimation of the true current state (without noise)
Brocker, J. +2 more
openaire +3 more sources