查询词典 noise-power-ratio

Objective To develop a kind of preliminary screening acoumeter for the prevention of noise-induced hearing loss. Methods This portable preliminary screening acoumeter based on ARM7 LPC2148+SD card+VS1003 can make anti-noise hearing protection.

目的 研制强噪声引起听力损伤预防和快速初筛仪，能预防强噪声给人员带来的听力损伤，并能实施听力损伤的快速筛查。

This paper offers a numerical method for the optimal design of active noise cancellationinthree dimensional space based on the theory of radiation of noise sources and the additivity of linear soundfield.

本文根据声源辐射理论和线性声场迭加原理，提出了一种三维空间有源消声的数值优化方法。

The application of noise removal for EEG signals based on wavelet transform is discussed in the paper,And the influence on EEG noise removal using different wavelet basis is introduced,Furthermore the wavelet soft-thresholding method and 1-Dimensional wavelet single-branch reconstruction are used for removing noise in EEG.

摘 要 摘要本文探讨了小波变换在脑电去噪中的应用方法，介绍了不同小波基对脑电去噪的影响，比较了小波软门限法和一维小波单支重构去噪方法的去噪效果。

To eliminate the disturbance of the noise (particularly the pulse noise and salt-and-pepper noise influence which causes by equipment and transmission) in image processing, a smooth operation is needed. In this paper we have analyzed several smooth operation methods and improve median filter method by a directional way to reduce the detail loss of smoothing process.

为在图像处理过程中去除噪声的干扰（尤其是由设备和传输引起的脉冲噪声和椒盐噪声的影响），首先对图像进行平滑操作，本文对常用的几种平滑滤波方法进行了分析，选择使用中值滤波方法，并使用边缘的方向信息对其进行了改进，以减少平滑过程中的细节损失。

When detecting the edge, an auto-choose threshold algorithm is given to reduce the salt-and-pepper or pulse wrong edges. After analyzing the special noise factor in pin's image, this paper improves the edge detection elements. That's putting forward a way which is named"the method of de-noise based on linear weighted operator template"to reduce the zonal or cluster noise. And test show that the algorithms detect image's edge rightly.

针对钻针图像的特点，在边缘检测中提出了自动选择阈值的算法；之后针对钻针图像中的特殊噪声形式，对边缘检测算法进行了原理上的改进，通过对图像的灰度分布的数学模型的建立，提出了使用加权直线模板去噪法进行块状噪声的去除；通过上述算法的应用，良好地改善了图像处理的质量。

The conˉstruction of noise damping tower to form resonance cavity and the utilization of the soft noise insulaˉtion device can sovel the intermediate- lowfrequency noise .

通过研究2K58-28型轴流风机的噪声问题，阐述了建消声塔形成共振腔及采用软隔声装置等办法解决中、低频噪声治理难题。

In this article, the direction determining of low-noise targets and measurement of underwater noise level in the condition of surface noise is discussed.

文章摘要：文章对存在海洋表面噪声时的低噪声目标的方向测定问题和水下噪声级测定问题进行了讨论。

This paper divides general noise eliminations into four groups by the characters of noise in the reflection seismic exploration,analyses their merits and demerits and compared methods with others.The same time,we introduce application domain of the noise eliminations.

本文从反射法地震勘探中噪声的特性出发，将常用的去噪方法分为四类，分析了它们的优点和局限性，并且对不同的处理方法进行了简单的比较，介绍了他们的应用领域。

The histogram equalization technique can improve the contrast of the images degraded by environmental factors like fog, rain, and so on. The noise removal technique can effective remove the pepper-and-salt noise and Gaussian noise.

经研究发现，若影像经「亮度等值化」，可降低外在环境影响；「杂讯滤除处理」可有效降低胡椒盐杂讯及高斯杂讯。

This is advantageous because if the scheme had averaged the noise but kept the resolution the same then the noise threshold of the converter could have become limited by the quantisation noise therein.

这是有益的，因为该方案平均了噪声，但是将分辨率保持为相同，所以转换器的噪声阈值会变得受其中的量化噪声限制。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。