Results 21 to 30 of about 1,364,258 (188)

iCap: New method for noise reduction in electroencephalography (EEG) signals

open access: yesمجلة جامعة دمشق للعلوم الهندسية, 2022
Electroencephalographic (EEG) signal’s importance increases as the neurotechnology research and industry accelerate. Therefore, it is crucial to acquire noise-free signals by maximising the signal-to-noise ratio (SNR). Many methods are followed to clean
Nibras ABO ALZAHAB Riham DAIEA Mhd Shafik ALNAHHAS
doaj  

Robust Automatic Modulation Classification in Low Signal to Noise Ratio

open access: yesIEEE Access, 2023
In a non-cooperative communication environment, automatic modulation classification (AMC) is an essential technology for analyzing signals and classifying different kinds of signal modulation before they are demodulated.
To Truong An, Byung Moo Lee
doaj   +1 more source

Phrases in noise test (PINT) Brazil: effectiveness of the test in children with hearing loss

open access: yesBrazilian Journal of Otorhinolaryngology, 2021
Introduction: One of the main implications of hearing impairment is the difficulty in perceiving speech sounds, especially in noisy environments. Thus, the frequency-modulated system is considered an important educational tool for children with hearing ...
Regina Tangerino de Souza Jacob   +6 more
doaj   +1 more source

Signal-to-noise ratio and signal-to-noise efficiency in SMASH imaging [PDF]

open access: yesMagnetic Resonance in Medicine, 1999
A general theory of signal-to-noise ratio (SNR) in simultaneous acquisition of spatial harmonics (SMASH) imaging is presented, and the predictions of the theory are verified in imaging experiments and in numerical simulations. In a SMASH image, multiple lines of k-space are generated simultaneously through combinations of magnetic resonance signals in ...
D K, Sodickson   +4 more
openaire   +2 more sources

Signal to Noise Ratio Loss Function

open access: yesCoRR, 2021
This work proposes a new loss function targeting classification problems, utilizing a source of information overlooked by cross entropy loss. First, we derive a series of the tightest upper and lower bounds for the probability of a random variable in a given interval.
Ali Ghobadzadeh, Amir Lashkari
openaire   +2 more sources

Classification and redshift estimation by principal component analysis [PDF]

open access: yes, 2002
We show that the first 10 eigencomponents of the Karhunen-Lo\`eve expansion or Principal Component Analysis (PCA) provide a robust classification scheme for the identification of stars, galaxies and quasi-stellar objects from multi-band photometry.
Bagoly   +57 more
core   +2 more sources

Breathing-induced Errors in Quantification and Description of Dominant Intra-Prostatic Lesions (Dils) in PET Images: A Simulation Study by Means of The 4D NCAT Phantom [PDF]

open access: yesJournal of Biomedical Physics and Engineering, 2022
Background: Respiratory movement and the motion range of the diaphragm can affect the quality and quantity of prostate images.Objective: This study aimed to investigate the magnitude of respiratory-induced errors to determine Dominant Intra- prostatic ...
Khadijeh Bamneshin   +5 more
doaj   +1 more source

A study on correlation between thyroid CT radiation dose, image quality and female body composition [PDF]

open access: yesZhongguo aizheng zazhi
Background and purpose: With the increasing use of medical imaging examinations, Computed tomography (CT) scans have become one of the primary sources of effective dose.
SHEN Xigang, LIN Chengxiang, PENG Weijun, GU Yajia
doaj   +1 more source

Sequential joint signal detection and signal-to-noise ratio estimation

open access: yes, 2017
The sequential analysis of the problem of joint signal detection and signal-to-noise ratio (SNR) estimation for a linear Gaussian observation model is considered.
Fauß, M.   +3 more
core   +1 more source

Design of Piecewise Uniform Scalar Quantizer with Geometric Progression of Segment Width

open access: yesAdvances in Electrical and Computer Engineering, 2011
In this paper, the design procedure of the piecewise uniform scalar quantizer having segments with widths that form a geometric progression is presented.
NIKOLIC, J., PERIC, Z.
doaj   +1 more source

Home - About - Disclaimer - Privacy