Results 1 to 10 of about 70,937 (255)
On the theoretical maximum achievable signal-to-noise ratio (SNR) of piezoelectric microphones. [PDF]
Sens Actuators A Phys, 2017 A theoretical maximum achievable signal to noise ratio (SNR) for piezoelectric microphones is identified as a function of only microphone volume irrespective of architecture and construction details. For a given piezoelectric material, microphone SNR can be reduced to an expression containing only a dimensionless coupling coefficient and microphone ...
Seo Y, Corona D, Hall NA.
europepmc +5 more sources
IEEE AccessNoises are commonly present in grayscale images, particularly in Scanning Electron Microscope (SEM) images especially secondary emission noise, which can significantly affect their quality.
Dominic Chee Yong Ong, Kok Swee Sim
doaj +5 more sources
Calculations of Signal to Noise Ratio (SNR) for Free Space Optical Communication Systems
مجلة بغداد للعلوم, 2008 In this paper, we calculate and measure the SNR theoretically and experimental for digital full duplex optical communication systems for different ranges in free space, the system consists of transmitter and receiver in each side. The semiconductor laser
Baghdad Science Journal
doaj +4 more sources
Skalabilitas Signal to Noise Ratio (SNR) pada Pengkodean Video dengan Derau Gaussian [PDF]
Jurnal Rekayasa Elektrika, 2015 In video transmission, there is a possibility of packet lost an d a large load variation on the bandwidth. These are the source of network congestion, which can interfere the communication data rate.
Agus Purwadi
doaj +2 more sources
Signal-to-noise ratio enhancement for MEMS resonant sensors with potential barrier adjustable stochastic resonance [PDF]
Microsystems & NanoengineeringThe signature of stochastic resonance is that additional noise surprisingly enhances the signal-to-noise ratio (SNR). A noise-adaptive system that learns to add an optimal amount of noise to trigger stochastic resonance and improve SNR is known as ...
Junhui Wu, Guangya Zhou
doaj +2 more sources
Noise estimation in single coil MR images
Biomedical Engineering Advances, 2021 Magnetic resonance (MR) signal is degraded by acquisition noise. Estimation and removal of noise from MR images is essential for analysis and further pre-processing. The work proposes a new method for noise variance estimation in single coil magnitude MR
Archana Chaudhari, Jayant Kulkarni
doaj +1 more source
Improvement of signal-to-noise ratio in parallel neuron arrays with spatially nearest neighbor correlated noise. [PDF]
PLoS ONE, 2018 We theoretically investigate the signal-to-noise ratio (SNR) of a parallel array of leaky integrate-and-fire (LIF) neurons that receives a weak periodic signal and uses spatially nearest neighbor correlated noise.
Tianquan Feng +3 more
doaj +1 more source
Improved Radar Detection of Small Drones Using Doppler Signal-to-Clutter Ratio (DSCR) Detector
Drones, 2023 The detection of drones using radar presents challenges due to their small radar cross-section (RCS) values, slow velocities, and low altitudes. Traditional signal-to-noise ratio (SNR) detectors often fail to detect weak radar signals from small drones ...
Jiangkun Gong +4 more
doaj +1 more source
Sensors, 2020 Signal-dependent speckle-like noise was the dominant noise in a Brillouin grating measurement with micrometer-resolution optical low coherence reflectometry (OLCR).
Kazumasa Takada +2 more
doaj +1 more source
Evaluating effectiveness of dynamic soundfield system in the classroom
Noise and Health, 2016 Research has reported on the use of soundfield amplification devices in the classroom. However, no study has used standardized tests to determine the potential advantages of the dynamic soundfield system for normally hearing students and for the teacher ...
Aline Duarte da Cruz +5 more
doaj +1 more source