Results 21 to 30 of about 9,988,930 (255)

Data Augmentation for Speaker Identification under Stress Conditions to Combat Gender-Based Violence

open access: yesApplied Sciences, 2019
A Speaker Identification system for a personalized wearable device to combat gender-based violence is presented in this paper. Speaker recognition systems exhibit a decrease in performance when the user is under emotional or stress conditions, thus the ...
Esther Rituerto-González   +3 more
doaj   +1 more source

A Concept for Myocardial Current Density Estimation with Magnetoelectric Sensors

open access: yesCurrent Directions in Biomedical Engineering, 2023
In this paper we present a novel noninvasive approach to estimate current densities in the heart from magnetocardiography. The proposed algorithm uses nested optimization to model current densities in equally-sized voxels of myocardial tissue.
Engelhardt Erik   +6 more
doaj   +1 more source

Apropos of Signal Processing [PDF]

open access: yes, 2021
Many of the problems addressed by signal processing can be classified as detection, estimation, or prediction. All humans do signal processing every day.
Nandi, AK, Asoke K. Nandi
core   +1 more source

Statistical Analysis and Machine Learning Prediction of Fog-Caused Low-Visibility Events at A-8 Motor-Road in Spain

open access: yesAtmosphere, 2021
This work presents a full statistical analysis and accurate prediction of low-visibility events due to fog, at the A-8 motor-road in Mondoñedo (Galicia, Spain).
Sara Cornejo-Bueno   +7 more
doaj   +1 more source

Perturbation theory with quantum signal processing [PDF]

open access: yesQuantum, 2023
Perturbation theory is an important technique for reducing computational cost and providing physical insights in simulating quantum systems with classical computers.
Kosuke Mitarai   +2 more
doaj   +1 more source

Quantitative Evaluation for Magnetoelectric Sensor Systems in Biomagnetic Diagnostics

open access: yesSensors, 2022
Dedicated research is currently being conducted on novel thin film magnetoelectric (ME) sensor concepts for medical applications. These concepts enable a contactless magnetic signal acquisition in the presence of large interference fields such as the ...
Eric Elzenheimer   +9 more
doaj   +1 more source

Automatization techniques for processing biomedical signals using machine learning methods [PDF]

open access: yes, 2008
The Signal Processing Group (Department of Signal Theory and Communications, University Carlos III, Madrid, Spain) offers the expertise of its members in the automatic processing of biomedical signals.
Artés Rodríguez, Antonio
core   +1 more source

Orthogonality is superiority in piecewise-polynomial signal segmentation and denoising

open access: yesEURASIP Journal on Advances in Signal Processing, 2019
Segmentation and denoising of signals often rely on the polynomial model which assumes that every segment is a polynomial of a certain degree and that the segments are modeled independently of each other.
Michaela Novosadová   +2 more
doaj   +1 more source

Automatic Localization of an Ultrasound Probe with the Help of Magnetic Sensors

open access: yesCurrent Directions in Biomedical Engineering, 2022
Ultrasound measurements are a widely used instrument in clinical practice. For later traceability of the images, the position (and orientation) of the ultrasound probe must be recorded during the measurement. Until now this has to be done manually by the
Bald Christin   +2 more
doaj   +1 more source

Regular perturbation on the group-velocity dispersion parameter for nonlinear fibre-optical communications

open access: yesNature Communications, 2020
Nonlinear effects have been studied in optical fiber communications channels under various specified parameter regimes. Here, the authors develop an approximate model via perturbation that is more accurate for the highly nonlinear regime.
Vinícius Oliari   +2 more
doaj   +1 more source

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