环境噪声

This paper introduced that how resynthesize the neural firing rate by correlogram inversion,how resume the lost information by half wave rectification inversion.and a solution of speech enhancement based on masking properties of human auditory is proposed and implemented,we can not only analyse and resynthesize speech signal ,but also analyse and resynthesize speech signal in noisy entironment with the system.

又根据听觉生理特点提出了抗噪声方案，使我们的语音分析／重构系统不仅可以对无噪信号进行重构，而且还可以在噪声环境下的语音信号进行重构。

This noise generator used the new FPGA device, and we made use of some given functions from the device to reduce the design difficulty. This generator improved the agility of circuit debugging, and it can be used in the testing of communication system under many circumstances.

这种噪声生成器与传统数字电路所组成的噪声生成器相比，采用了新型的FPGA器件，通过利用其中的一些既有功能大大降低了设计的难度，提高了电路调试的灵活性，可用于多种环境下的通信系统测试。

On the basis of typical photon noise model of the electro-optical imaging system, a real-time photon noise generator has been developed for producing photon noise which gives influence to the results of electro-optical imaging devices.

当将光子噪声实时地叠加到计算机生成的分辨力图案上，首次实现了定量环境下典型的真实光量子噪声的实时仿真叠加。

As one part of the project, the dissertation is developed with thelocalization problem in mobile robot navigation. Combined with "MobileRobot 1 of Central South university (MORCS-1)", a mobile robot designed byus that equipped with a 2D laser measurement system to sense the environmentand the proprioceptive sensors such as the odometry, gyroscope to calculate itsdead reckoning, the approach about the four kind uncertainty factors of mobilerobot localization is studied. These researches include that the error analysisand calibration of position sensors is implemented to reduce the measurementnoise, the 3D kinematic model of mobile robot is built to gain the accuratepose in complex terrain, some work on the automatic detection of static ordynamic obstacles based on laser scanner is investigated to eliminate thedynamic influence of the environment and to realize the reliably absoluteposition, and lastly a robust algorithm is presented to involve the incrementalenvironment mapping and self-localization of mobile robot with unknown dataassociation and to improve the self-localization performance of mobile robotunder unknown environment.

作为该项目研究的一部分，本论文以移动机器人导航中的定位问题为研究内容，利用自行研制的装配有二维激光雷达环境感知系统，并通过里程计、陀螺仪等内部传感器来实现航迹推测的移动机器人"中南移动1号MORCS-1"，重点围绕影响移动机器人系统定位的四类不确定性处理展开研究：通过移动机器人定位传感器的误差分析及校准，旨在消除传感器噪声所带来的测量误差；通过建立移动机器人的三维运动学模型进行航迹推测，以期实现复杂地形下精确的移动机器人本体姿态感受；通过基于激光雷达的动静态障碍的自主检测等相关研究，尽量消除环境的不确定因素影响进而实现可靠的移动机器人绝对定位；通过以上研究，针对未知数据关联下移动机器人增量式环境建图与自定位的研究提出一种鲁棒的滤波算法，改善未知环境中移动机器人自定位的性能。

The fifth chapter: regionally environmental program. Through argument of environmental reasonability of general program, set down the control goals of waste gas, waste water discharging, sound pollution and solid waste, and established preventing program of pollution and ecological environment..

第五章：区域环境规划，通过对区域总体发展规划的环境合理性论证，确定了经济技术开发区大气污染、废水排放、噪声污染、固体废物等环境污染控制目标，并制定了污染防治规划和生态环境规划等。

More than 3500 commonly used bisyllabic Chinese words were selected as experimental ...

实验词汇选取了常用汉语5000词中的3500余个双音节词，各读一遍并加上全部单音节音在普通环境下采样二遍作为训练样本，从中选了数百个分别在普通环境及噪声环境下采样作为识别样本。

The main function of the electronic burglarproof system is voice and light burglarproof, mute burglarproof

另外这类型的报警系统容易受外界的噪声干扰，产生误报，对周围的环境产生严重的噪声干扰。

So, the study in this dissertation focuses on some key points in theuncertainty treatment of mobile robot localization as follows: Combined with the multiple proprioceptive and exteroceptive sensors ofmobile robot MORCS-1, aimed at the drift error of fiber optic gyro as theproprioceptive sensor, the neural network using genetic algorithm as optimaltool is proposed to accomplish the modeling and calibration for temperaturedrift of fiber optic gyro, which can reduce the drift error to the standard outputat constant temperature; and aimed at the noisy disturbance of ranging datafrom the exteroceptive sensor laser scanner, a dynamic adaptive filter isintroduced through the analysis of neighboring ranging data in time and spatialcorrelation to realize the real-time and dynamic filter, which can validly filter the noisy disturbance to meet the requirement of the accurately real-timeobstacle detection in mobile robot navigation.

总结全文，在移动机器人定位的不确定性处理研究中，提出了一些具有一定创新性的方法：结合自行研制的移动机器人MORCS-1系统的多种内外部定位传感器，针对内部本体感受传感器光纤陀螺仪的漂移误差，提出采用基于遗传算法优化的神经网络来对光纤陀螺仪的温漂建模及校准，能够将其温漂变化控制在恒温条件下标准测试输出附近；针对外部环境感知传感器激光雷达测距数据中包含的噪声干扰，考虑移动机器人导航中激光雷达测距数据的时空关联性，提出采用动态自适应滤波技术进行预处理，从而可以有效滤除噪声干扰满足导航中障碍实时精确检测的要求。

Selecting certain section of North-south Elevated Road in shanghai to develop and set up several curved and erect, turnable noisae-preventing screens, and making comparative noise level test and then conducting analysis and approach on sound environment werw presented in this article.

在上海市区南北高架与地面道路建设期间，选择了一些典型的高架路段，开发和设置了弧型与面立型两种可翻转式防噪声屏，并作了对比噪声测试，进行了声环境的分析、探讨。

Selecting certain section of North-south Elevated Road in shanghai to develop and set up several curved and erect, turnable noisae-preventing screens, and making comparative noise level test and then conducting analysis and approach on sound envi

摘要在上海市区南北高架与地面道路建设期间，选择了一些典型的高架路段，开发和设置了弧型与面立型两种可翻转式防噪声屏，并作了对比噪声测试，进行了声环境的分析、探讨。

On closer examination, though, this is not a vote for multilateralism but just the opposite.

仔细审视后我们发现，这并非是对多边主义投出的赞成票，而是恰好相反。

Uncovering their weak spots, so I can defeat them.

揭露出他们的弱点，这样我就可以打败他们了。