环境噪声

The noise level in this environment ranges from low to moderate.

这个环境中的噪声等级从低到中等。

Traffic Noise pollution is one of the important sources.

交通噪声是环境污染的重要来源之一。

With the rapid development of economy, the effects of traffic noise pollution to the environment and our health attract more and more attention.

随着社会经济的迅速发展，交通噪声污染对环境和人们健康的影响受到更多的关注。

Fault diagnosis problem of nonlinear system in arbitrary noise environment is studied with this point of view.

文中试图从这个角度研究在非高斯噪声环境下非线性系统的故障诊断问题。

Today concern for the environment extends into such areas as chemical pollution of the air we breathe and the water we drink, strip mining, dam and road building, noise pollution, offshore oil drilling, nuclear energy, waste disposal, the use of aerosol cans and nonreturnable beverage containers and a host of other issues.

今天，环境问题已扩大到了下列领域：人们呼吸的空气和饮用的水之化学污染、露天采矿、堤坝和道路之修建、噪声污染、近海石油钻探、核能、三废处理、溶胶罐和不回收饮料容器之利用和一系列其它问题。

Based on it , in the circumstances of nonwhite and uncertain noise model , a method of add itional array component is proposed to estimate azimuth angles of sources in unk nown noise environment using MUSIC .

对不少实际环境中的噪声模型是非白和不确定的情况下，提出一种辅助阵元的方法，以确定

To improve the robustness of voice activity detection for non-stationary noises, a new algorithm based on on-line one-class SVM is proposed.

针对非平稳噪声环境下的语音活动检测问题，提出了基于在线单类SVM的自适应语音活动检测算法。

Unscented transformation is used to improve the performance of extended kalman filter in the field of automatic control because it can reach accuracy of second order linear approximation. UT compensation can make us to estimate more accurate noisy acoustic model parameters corresponding to static feature of speech and we also proposes several kinds of engineering implementations to improve the efficiency up to six times faster than usual implementation of UT compensation.

针对声学模型参数在噪声环境下非线性变化的补偿问题，现在国际上广泛使用的PMC和VTS声学模型参数补偿算法只能达到其线性展开的一阶近似，所以本文通过使用自动控制领域用来提高扩展卡尔曼滤波器性能的称作Unscented Transformation的技术，可以达到对声学模型参数非线性变化的二阶近似，得到的声学模型参数更加精确。

Environment concentration of dust , toxicants and noise has been monitoring for 17 years. prehensive control measures are summarized.

通过定期监测铸造生产环境中的粉尘、毒物浓度及噪声强度，并进行17 年动态观察，总结了综合性治理措施。

In the analysis of mechanical noise sampled from urban environment, many samples of noise present non-Gauss probability distribution.

在对城市环境下采集的实际机动噪声的分析中，发现许多样本的概率分布是非高斯的。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。