Results 11 to 20 of about 87,116,953 (200)

Signal-to-noise ratio.

open access: yes, 2022
MEG SNR was estimated at the source level. Parcellated, group-average SNR map is depicted across the cortex. The cross-modal correspondence R2 map (i.e., regional model fit) is then compared with the SNR map.
Golia Shafiei (3191169)   +2 more
core   +2 more sources

Real-time adaptive filtering of dental drill noise using a digital signal processor [PDF]

open access: yes, 2006
The application of noise reduction methods requires the integration of acoustics engineering and digital signal processing, which is well served by a mechatronic approach as described in this paper.
Kaymak, E   +3 more
core   +6 more sources

Signal-to-noise ratio (SNR) evaluation.

open access: yes, 2022
Mean signal intensity was calculated by averaging the region of interest’s (ROI) pixels’ intensities (Gd-DOTA concentration 5.1 mM). Square ROIs were fitted into each of the contrast filled phantoms (1–6), circular ROIs were horizontally positioned in ...
Laura M. Schreiber (9659114)   +9 more
core   +1 more source

Matched subspace detection with hypothesis dependent noise power [PDF]

open access: yes, 2008
We consider the problem of detecting a subspace signal in white Gaussian noise when the noise power may be different under the null hypothesis—where it is assumed to be known—and the alternative hypothesis.
Cédric Richard   +8 more
core   +2 more sources

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.
Xigang SHEN   +3 more
doaj   +2 more sources

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

Modeling signal-to-noise ratio of otoacoustic emissions in workers exposed to different industrial noise levels

open access: yesNoise and Health, 2016
Introduction: Noise is considered as the most common cause of harmful physical effects in the workplace. A sound that is generated from within the inner ear is known as an otoacoustic emission (OAE).
Parvin Nassiri   +5 more
doaj   +1 more source

Analysis of Noise Coupling From a Power Distribution Network to Signal Traces in High-Speed Multilayer Printed Circuit Boards [PDF]

open access: yes, 2006
As layout density increases in highly integrated multilayer printed circuit boards (PCBs), the noise that exists in the power distribution network (PDN) is increasingly coupled to the signal traces, and precise modeling to describe the coupling ...
Baek, Seungyong   +7 more
core   +2 more sources

Graphene Nanogrids FET Immunosensor: Signal to Noise Ratio Enhancement

open access: yesSensors, 2016
Recently, a reproducible and scalable chemical method for fabrication of smooth graphene nanogrids has been reported which addresses the challenges of graphene nanoribbons (GNR).
Jayeeta Basu, Chirasree RoyChaudhuri
doaj   +1 more source

Adaptive processing with signal contaminated training samples [PDF]

open access: yes, 2013
We consider the adaptive beamforming or adaptive detection problem in the case of signal contaminated training samples, i.e., when the latter may contain a signal-like component.
Bidon, Stéphanie   +3 more
core   +1 more source

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