A number of countries are already in the process of formulating their own standards for the control and reduction of classroom noise.
一些国家已经在着手制定本国关于控制和减少教室噪音的标准。
The noise was quite disruptive at first, but after about four minutes the subjects were doing just as well on their tasks as control subjects who were not exposed to noise.
起初，受试者会被噪音扰乱，但大约四分钟后，他们在任务中的表现与未受噪音影响的对照组受试者一样好。
If the individual knows that he or she can control the noise, this seems to eliminate both its negative effects at the time and its after-effects.
如果有人知道他或她可以控制噪音的话，或许可以同时消除当下和后续的负面影响。
reducing exposure (both occupational and recreational) to loud noises by using personal protective devices and by engineering noise control.
通过使用个人保护装置以及噪音控制工程，减少接触噪音时间。
A pleasing workplace includes everything from having the right tools available to provide basic comfort, such as proper lighting and noise control, etc.
一个令人愉快的工作环境包括一切良好可用的工具提供基本的舒适性，例如合适的灯光和噪音控制，等等。
When purchasing equipment, ensure the equipment has built in noise control. For example, portable generator should have proper covers to reduce noise disturbance to the surrounding area.
购买设备时，确保建造的设备在噪声控制之内。如，便携式发电器应有罩子以降低对周围区域产生的噪声影响。
System assessment, system optimizing designs and aliasing noise control all can be done based on information rate.
基于信息理论评价系统，优化系统设计，控制欠采样噪声。
The experimental result of the control performance of the passive noise control system, shows that the control effect was notable.
最后利用该测试系统对飞机座舱模型噪声无源控制系统进行了控制性能测试，控制效果明显。
This paper analyzes the basic principle of the new damping technology in recent years, and gives the examples of its wide application for vibration and noise control engineering.
本文对近十几年来新兴的阻尼技术的基本原理进行了简要分析，并对其在噪声与振动控制工程中的广泛应用状况进行了介绍。
Microperforated panel absorbers are getting more and more widely use in noise control field for it's large advantage.
微穿孔板吸声结构以其众多的优点，在噪声控制领域得到越来越广泛的应用。
In the designing and building of modern ships, more and more considerations have been given to the problems of vibration, shock and noise control.
在现代船舶的设计与建造中，振动、冲击与噪声控制的问题已越来越受到人们的高度重视。
The company has own characteristic technology and product in industry purification, industry dust removal, industry waste gas government, noise control and so on.
公司在工业净化、工业除尘、工业废气治理、噪声控制等方面均有自己的特色技术和产品。
This offers an effective means for diesel engine vibration and noise control, condition monitoring, and cylinder pressure recognition.
为柴油机的振动噪声控制、状态监测，以及缸内气体压力的识别提供了一种有效的方法。
The study of noise sources is essential in noise control, know well characterization of noise is the basis for comparison of methods and for filter design.
噪声源的研究对噪声控制是十分重要的，掌握噪声特征是噪声控制方法比较以及滤波器设计的基础。
So the noise control of the circular saw blade can effectively decrease the noise pollution and protect the health of the workers on the production line.
对圆盘锯进行噪声控制可以有效降低热锯机的锯切噪声，减小生产线的噪声污染，保护现场工作人员。
Rational planning of city roads is of great significance to the future noise control in the urban areas.
合理的城市道路规划，对未来的城市噪声控制具有重要的意义。
The application of nanometer materials is reviewed in waste water treatment and waste gas treatment and noise control.
介绍了纳米材料在废水处理、废气处理及噪声控制中的应用。
In active noise control (ANC), the FXLMS algorithm has been widely used for its simplicity and low computational load.
自适应噪声主动控制(ANC)中，由于FXLMS算法较为简单、计算量较小，使之得到广泛应用。
So this thesis studies the active noise control technique in the cabins.
为此本文对舱室空间内的有源噪声控制技术进行了研究。
The methods will not only make a key tool for noise prediction, but also play a role for noise control of the propeller in engineering project.
整个方法对船舶螺旋桨噪声预报提供了工具，对螺旋桨的噪声控制及低噪声设计也有重要的工程价值。
To reduce indoor noise and protect the public health, actions such as monitoring, assessment, developing criteria and noise control techniques, should be taken.
应采取多种措施如监督监测、评价、制定标准、噪声控制技术等来降低室内噪声，保护人群健康。
In the paper aiming at the problem of low frequency noise transmission through double panel structure, feedback active noise control technique is adopted to control noise transmission.
本文对于低频噪声在双层板结构中传播的问题，探讨采用反馈的主动噪声控制技术以达到控制噪声传播的目的。
Take the manufacture of Z535 variable speed gear box for example, to analyze the causes of gear noise and effective technological means of noise control.
以制造z 535变速齿轮箱为例，分析了齿轮噪声的产生原因和控制噪声所采用的有效工艺手段。
Points out the key issues in noise control including the arrangement of sound absorber, noise transmission from machine room and duct and noise superposition.
指出了全空气空调系统噪声控制应注意的几个问题，如消声器设置、空调机房及风管传声、噪声叠加等。
The types and the reasons of noise for CMOS APS image sensor are analysed. Noise control technology to various noise is discussed in this paper.
分析了CMOS 有源像素图像传感器（APS）的噪声种类及各自产生的原因，介绍了对于不同噪声的噪声控制技术。
The types and the reasons of noise for CMOS APS image sensor are analysed. Noise control technology to various noise is discussed in this paper.
分析了CMOS 有源像素图像传感器（APS）的噪声种类及各自产生的原因，介绍了对于不同噪声的噪声控制技术。
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