In order to reduce the noise of large cold saw, characteristics of its frequency spectrum was analyzed, Using water curtain to reduce noise has made certain effects, and the noise is redced from 108 dB to 89 dB.
The design is done first in an equivalent lumped circuit model,then how to improve the stability of the circuit and lower the noise figure are discussed,and finally it works out a circuit simulation result of a two step LNA with the working passband 1650M~2350M,the gain G>29dB,the gain flatness GF±1dB,noise figure <0.8dB.
Since power train is the main source of vibration which has significant influence on riding comfort, vibration can be sharply decreased by a well-designed power train so as to improve the riding comfort and lower the noise.
The source of noise in machine building plant was analysed,and the technology and administration way to lower the noise in the workshop was worked out in accordance with the special characteristics of noise.
The vibration and noise causes in urban rail transit are analyzed. And from the sources control, isolating transmission ways and other aspects corresponding measures are proposed to reduce vibration and decrease noise, which provide references for environment protection in development of urban rail transit.
Digital-noise reduction with decoupling capacitors in ever faster (lower voltage/impedance) technologies for mixed-signal applications is being gradually rendered ineffective by line resistance to the capacitors.
In contrast, blocking inductors show excellent noise reduction in SPICE simulations, the LdI/dt self-perturbance being solved with local auxiliary capacitors.
Our experiment may become a powerful facility to test quantum noise reduction schemes such as the use of squeezed light or quantum locking of mirrors.
A mechanism of current noise reduction in systems of ion beam formation from vacuum arc plasma
Noise reduction by diaphragming laser beam in the optical detection system of an atomic force microscope
In this paper, a new method for nonlinear filtering of images based on trace transform is suggested; it can be used to reduce noise, quantize images, and construct their polygonal approximations.
Making clear the generation mechanism of fluid dynamic noise is essential to reduce noise deriving from turbomachinery.
This paper presents a new edge detector using 5×5 mask, which can reduce noise efficiently but not increase the width of the detected edge which always happens in the case of using the 5×5 window edge detector.
By means of optimization technique, the optimum operational parameters for two working conditions of the engine were selected and the test results showed that optimum adjustment could reduce noise by 2-4 dB.
This study investigates how to reduce noise and vibration in aircraft cabins with Pb(TiZr)O3 (PZT), using a semi-monocoque structure 1.5 m in diameter and 3.0 m long with a 2.3 mm skin, which simulates an aircraft body.
A sensitivity threshold based on the global condition is used to lower the noise.
A classical radioastronomy receiver is fed with a corrugated horn and an independent lens, both placed in a cryostat to lower the noise temperature.
The observed difference in their noise performance implies that the increase of the thicknesses of both the active layer and the top electrode pad can significantly lower the noise levels and in turn lead to higher detectivity.
A careful optimization of geometrical and other core parameters can also lower the noise in the voltage signal.
Lower The noise and gain of one of our best cryogenic amplifiers.