noise analysis

noise analysis

[′nȯiz ə‚nal·ə·səs]
(physics)
Determination of the frequency components that make up a particular noise being studied.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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The acquisition of Helic, combined with Ansys' flagship electromagnetic and semiconductor solvers, will provide a comprehensive solution for on-chip, 3D integrated circuit and chip-package-system electromagnetics and noise analysis.
ACTA's capabilities include explosives safety, fire and toxic risk analyses, petrochemical risk management, anti-terrorist risk management, reliability and logistics, aircraft impact and noise analysis, structural mechanics research, and the development of specialized engineering software.
Dynamic noise analysis resulted in a new solution that cut noise 97%.
The efficacy and robustness of the improved MSE technique will be validated by performing noise analysis with respect to white, pink, and brown noise, which are commonly present in cardiac signals such as the ECG.
The government's consultation was reopened in October after the Department for Transport (DfT) published a series of fresh reports into the impact of expanding the west London hub, including updated noise analysis and a new air quality plan.
We performed a noise analysis with Maximum Likelihood Estimation (MLE) and found that stations in Central and Northern Europe are characterized by spectral index between flicker and random-walk noise, while stations in Southern and Western Europe: between white and flicker noise.
However, some shortcomings exist in current researches: (1) the method used to calculate emission performance is Boeing fuel flow method, which is unable to reflect the effects of engine cycle parameters; (2) the noise analysis module does not account for the engine equipped with liner and chevron nozzle that suppress aircraft noise; (3) there was no attention paid to the issue that landing gear needs to be lengthened due to the higher bypass ratio engine to ensure the engine ground clearance and that the engine should not be damaged when the nose gear collapses.
There are only a few deviations when the frequency is higher than 150 Hz, confirming the consistency of the results and further verifying the accuracy of substructure method applied to the complex structure modeling and noise analysis. Besides, the substructure method can be used in the NVH field in automotive engineering.
What's more, optionally available for the unit are surface finish measurement and Barkhausen Noise Analysis capabilities.
Ultrasonic noise analysis also can be used to determine if the bearing is entering a fault condition in stage 1 (lubrication deficiency) or later stages, when the application of lubricant no longer restores the noise level to baseline (new) levels.
The noise produced at the output is approximately 1.10 microvolts by the preamplifier circuit which was found during noise analysis. Therefore the circuit can be used as a preamplifier circuit in electronic stethoscope.