In traditional denoising methods for signals, we usually use the method of threshold to achieve denoising by the threshold disposing of wavelet packet transform.
传统信号去噪方法常采用门限法对噪声信号的小波或小波包变换做阈值处理以达到去噪的目的。
For wideband noise interferences, this dissertation studies wavelet packet threshold method and USES it to suppress wideband noise interferences in signal domain and image domain.
对于宽带噪声干扰，本文研究了小波包阈值方法，并将之应用到信号域和图像域来抑制宽带噪声干扰。
Especially to threshold de-noising, a method based on orthogonal wavelet analysis and self-adaptive learning algorithm was proposed here.
特别是对阈值去噪方法，提出了一种基于正交小波变换和自适应学习算法的噪声抑制方法。
On the basis of analyzing the basic features of impact signal noise from reactor loose parts, the wavelet nonlinear threshold value filtering method for the use of impact signal extraction is studied.
在分析反应堆松动部件冲击信号噪声基本特征基础上，利用小波非线性阈值滤波方法对冲击信号的提取进行了研究。
The results show that the EWC threshold method of complex wavelet transform can effectively suppress the periodic narrowband interference from GIS UHF PD signals.
研究结果表明：基于EWC阈值法的复小波变换能够有效地抑制GIS特高频PD信号中的周期性窄带干扰。
Aimed at the ultrasonic signal polluted by noises, which is low in SNR, a method of the ultrasonic signal denoising in wavelet domain based on an improved threshold function was put forward.
针对超声无损检测中超声信号受噪声污染、信噪比不高的情况，提出了一种新的基于改进阈值函数的小波域超声信号去噪方法。
The proper setting of threshold is crucial for the early prediction of the short circuit fault in the low-voltage distributed system when using the method of wavelet decomposition.
当采用小波分解方法对低压配电系统短路故障进行早期检测时，门限值的合理设置对故障检测的可靠性及灵敏度是至关重要的。
To improve the clarity of CT image, and reduce the disadvantageous affect of the artifact, the article proposes a method of reducing CT image artifact based on wavelet soft threshold.
了提高CT图像的清晰度，降低伪影对医生诊断的不利影响，文章提出了一种基于小波变换和软阈值法的CT图像伪影消除方法。
In order to on-line process engine cylinder head vibration signals of mobile equipment, a de-noising method with gradual changing threshold based on lifting wavelet package transform was proposed.
为了实现移动装备发动机缸盖振动信号的在线处理，提出一种基于提升小波包变换的渐变式阈值降噪方法。
This paper proposes an energy threshold method based on wavelet transform and has achieved fairly good compression performance by referring to adaptive arithmetic encoding.
以小波变换为基础，提出了能量阈值法，并结合自适应算术编码方法对扰动数据进行压缩，获得了较好的压缩效果。
The present method for noise reduction with wavelet transform is based on the thresholding method and threshold selection will depend on the estimation of the noise standard deviation.
目前的小波去噪绝大多数都是基于阈值决策的方法，而阈值选择往往都是建立在对信号小波变换系数的方差估计上。
This article proposed a method to mark denoising threshold from study function of wavelet nerve network in order to improve performance of denoising to signals.
针对某一确定数据采集系统中小波去噪时的阈值选择，提出以小波神经网络加标准信号来标定去噪阈值的方法，从而提高对信号的去噪性能。
This paper proposed a method for fabric defects edge detection based on discrete stationary wavelet transform (DSWT) and optimal threshold segmentation algorithm (OTSA).
文章提出了基于离散平稳小波变换和最佳阈值分割算法的织物疵点边缘检测方法。
According to the feature of the MRA, this paper presents a noise filtering method of adaptive fuzzy threshold for wavelet classification base on multi resolution.
针对小波变换多分辨分析(mra)的特点，本文提出一种多尺度分级的自适应模糊权重中值滤波的去噪方法。
Secondly, a new method of infrared weak and small targets detection based on wavelet and adaptive threshold is proposed with an effective improvement detection of performance.
其次，利用小波多分辨分析特性，提出了基于小波分析的自适应门限检测方法，有效地提高了红外弱小目标检测性能。
Finally, wavelet threshold de-noising method was used to analyze the experimental signal of the two systems. The results showed this method can make some de-noising effect.
最后，运用小波阈值去噪法对两个系统的实验信号进行了分析，结果表明该方法对提高信噪比，抑制噪声具有一定的作用。
This paper introduces the application of wavelet transformation in speech signal denoising, describes in detail the method of soft threshold and hard threshold and points out their disadvantages.
研究了基于小波变换的语音去噪问题，在对传统阈值法去噪和语音特性分析基础上，提出一种改进的多阈值法语音信号去噪方法。
The experimental results showed that compared with other common wavelet threshold desnoising methods, the presented method can improve the visual effect and increase SNR of the denoised image.
实验结果表明，与普通小波阈值去噪方法相比，该算法能获得较好的图像效果，提高信噪比。
Aiming at the disadvantages of traditional soft and hard threshold methods for wavelet threshold denoising, the new developed extracting threshold denoising method is proposed.
针对小波阈值去噪方法中传统软硬阈值法各自存在的缺点，提出了开方法阈值去噪法。
This paper mainly points out how to analyze and get rid of the random noise of seismic data by using the wavelet transform and de-noising method by threshold filter in wavelet domain.
本文主要是使用离散二进小波变换，采用小波域阈值的去噪方法对地震信号中随机噪声进行分析和处理。
Threshold de-noising based on wavelet transform which is proposed to determine the decomposition order adaptively is an efficient method to reduce the white noise in the digital signal.
在对带白噪声信号的小波变换特性分析的基础上，基于自相关函数的白噪声检验方法，提出了一种确定小波分解层数的自适应算法。
By Analysing speech signal and conventional denoising method of threshold, a new mult-threshold based on wavelet transform method of speech signal denoising is proposed.
研究了基于小波变换的语音去噪问题，在对传统阈值法去噪和语音特性分析基础上，提出一种改进的多阈值法语音信号去噪方法。
In order to remove this phenomenon, we consider the cycle spinning method based on threshold wavelet and then use the coefficient magnify to remove the signal noise.
为了去除这种现象，考虑在阈值法的基础上对信号进行循环平移，然后再对平移后阈值上的系数进行放大，对信号进行消噪处理。
The method of threshold in deleting noise has two kinds of ways. One of them is hard one and the other is soft. The main idea is based on the processing method of the wavelet coefficients.
小波阈值去噪分为硬阈值去噪和软阈值去噪，它们的去噪思想都是在小波分解后的各层系数中，对模大于和小于某个阈值的系数分别进行处理。
Wavelet soft-threshold de-noising method was applied to preprocess the noisy signal, and the noise interference in disturbance detection was reduced to a great extent.
采用小波软阈值去噪方法对信号噪声进行预处理，很大程度地减小了噪声对扰动检测的干扰。
The results prove that we can get a very effective outcome by the method of wavelet transformation if the adaptive wavelet base and threshold value are chosen.
试验结果表明，在选择了适当的小波基函数和阈值的情况下，采用小波变换的消噪方法对舰船辐射噪声信号进行消噪处理，可以取得良好的效果。
The results prove that we can get a very effective outcome by the method of wavelet transformation if the adaptive wavelet base and threshold value are chosen.
试验结果表明，在选择了适当的小波基函数和阈值的情况下，采用小波变换的消噪方法对舰船辐射噪声信号进行消噪处理，可以取得良好的效果。
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