The system must reject noise even when there is no signal and, in fact, this is usually how system noise testing is done.
不过，这种对称性对于噪声抑制没有意义，系统应当能在没有信号时也能抑制噪声的发生（侵入），事实上，这通常是系统测试所需要做的。
Noise source identification for the model GZ6921 bus having rear mounted engine has been car ried out by means of the noise source identification model with testing and analysing system recommended.
运用该噪声识别模型及所介绍的测试分析系统，对GZ 6921型后置发动机客车噪声源进行了识别。
The principle and the system for simulation of vehicle noise are introduced. The feasibility of the simulation method and system is verified through testing.
介绍了汽车噪声模拟的原理及噪声模拟系统的设计，并通过试验验证了该模拟方法和模拟系统的可行性。
A noise testing and analyzing system of electronic device, based on the idea of virtual instrumentation, is introduced.
介绍了一种基于虚拟仪器的电子器件低频噪声测试分析系统。
In this paper, the definition and the field of application of noise resistance for the electronic noise measurement in communication testing system are discussed.
本文探讨噪声电阻的定义方法及其在通讯检测系统中的应用范围和局限性。
The background noise leads a mismatch between the training environment and testing environment, and degrades the performance of speaker identification system.
背景噪声的存在，使得说话人识别系统的训练环境和测试环境发生失配，导致系统性能发生急剧下降。
There must be errors for the measuring values of the first 1 order data of a system due to the noise and other factors in the Testing Model Analysis.
用试验模态分析方法测取的系统前1阶模态参数，由于噪声等多种因素的影响，具有一定误差。
The comparison method in phase noise measurement system is introduced by means of the advanced way in interlaboratory comparison and proficiency testing.
通过采用国际上先进的实验室比对和能力验证方法，提出了相位噪声测试系统的比对方案。
In this paper, the author puts out a method for testing textile material sound insulation property which can re-move noise disturbance and designs a measurement system.
本文作者提出一个能消除噪声干扰的纺织材料隔声性能测试方法。
Noise, an important factor which impact on the performance of ultrasonic online testing system, has a direct influence on the signal-to-noise ratio's level of ultrasonic signal acquisition.
噪声是影响超声在线检测系统性能的一个重要因素，对超声采集信号信噪比的高低有直接影响。
A new fast digital filter of on line eddy current testing system for decreasing the effect of high frequency noise was researched.
针对涡流在线检测系统中的各种高频噪声影响，设计了快速去噪滤波算法。
It is important to detect the image edge in the course of quality testing for ceramic tile, but noise in the image processing system is unavoidable.
在墙地砖的质量检测过程中，边缘检测是一项重要内容，而在检测过程中，图像噪声的引入不可避免。
In concurrence with the exhaust system resonance occurs at certain engine rotating speed during testing, the noise level of engine will substantially increase.
内燃机排气系噪声试验中，在某种转速下，排气系发生共振，从而使发动机噪声大大增加。
Chaos arithmetic is used for reducing noise in leaking system, and a new kind of narrow band ultrasonic testing principle is introduced.
提出了利用混沌算法抑制噪声，采用新型窄频带超声检漏原理来进行泄漏检测的新方法。
Preliminary test and study showed that phased array ultrasonic system was better in signal-to-noise ratio, more sensitive to defects, wider in testing range and higher in working efficiency...
初步试验和研究表明，相控阵超声无损检测系统比传统单探头超声无损检测具有信噪比高、缺陷分辨力强、有效探伤范围宽以及工作效率高等特点。
A new method for testing the video signaltonoise ratio (SNR) of television tracking system was brought forward, in which 3D noise theory and digital image processing technique was adopted.
提出了一种采用三维噪声理论和数字图像处理技术对电视跟踪系统视频信噪比（SNR）进行测试的新方法，并给出了测试系统的结构框图和部分测试结果。
A new method for testing the video signaltonoise ratio (SNR) of television tracking system was brought forward, in which 3D noise theory and digital image processing technique was adopted.
提出了一种采用三维噪声理论和数字图像处理技术对电视跟踪系统视频信噪比（SNR）进行测试的新方法，并给出了测试系统的结构框图和部分测试结果。
应用推荐