1) de noising by soft thresholding
浮动阈值消噪
2) threshold de-noising
阈值消噪
1.
First,it decomposes high frequency twice,and then de-noises the signal by threshold de-noising.
该方法不同于传统阈值消噪方法,首先对语音信号高频部分做了二次分解,然后应用阈值消噪的方法对信号进行消噪处理。
2.
Combining with different threshold selections,we discuss the efficiency of this method in threshold de-noising method,using SNR and MSE as indexes.
结合不同的小波阈值处理方法,用信噪比和最小均方误差为度量指标,探讨了在阈值消噪算法中本文提出的确定“最佳”分解层数算法对消噪的有效性。
3.
Threshold de-noising based on wavelet transform is introduced,in virtue of LabVIEW plate,by simulating test,soft threshold de-noising is compared to hard threshold de-noising,and different wavelet function are selected for de-noising,the validity of threshold de-noising based on wavelet transform is proved in the process of power signal de-noising.
研究基于小波变换的阈值消噪法,借助LabVIEW平台,通过仿真试验,对软阈值和硬阈值消噪及采用不同的小波函数消噪进行了分析。
4) denoising threshold
消噪阈值
1.
The best wavelet packet basis (BWPB) and the denoising threshold are the two key problems, which have to be solved when using wavelet prackets for denosing and detection of steam turbine vibration signals.
在利用小波包进行汽轮机振动信号的消噪和检测时,最优小波包基和消噪阈值的选取是必须解决的两个关键问题。
5) vary threshold quantity de-noising de-noising
变阈值消噪
6) floating threshold
浮动阈值
1.
Noise image edge detection based on lifting scheme and floating threshold;
基于提升方案和浮动阈值的含噪图像边缘检测
2.
By analyzing the good time-frequency properties of wavelet packet transform and according to the different wavelet properties between the signal and noise,the method of using floating threshold to denoise is adopted which realizes the weak signal detection at low signal-to-noise ratio.
在分析小波包变换具有良好的时频特性基础上,根据信号和噪声具有不同的小波特性,采用浮动阈值去噪的方法,解决了低信噪比情况下弱信号的检测。
3.
In this paper,a new signal denoising algorithm based on the best wavelet packet basis which adopts Shannon entropy and the floating threshold is discussed,and is used in the signal denoising of the anti-ship missile s gyro.
文中提出了一种基于Shannon熵准则的最优小波包基浮动阈值去噪算法,并将其应用于某型反舰导弹陀螺仪信号的去噪处理。
补充资料：地理阈值
亦称地理临界值。它将地理系统中的不同状态加以分隔与区分，把某一性质的表现范围加以限制和说明。在此种意义上，地理阈值代表了系统的“状态空间”的非连续性。在一般叙述中，常把地理阈值等同于地理系统边界条件，但二者是有区别的：如果两种不同的状态同时存在于相同的边界条件之中时，地理阈值的表现可能是“非传递性”的转移；而当两种不同状态分置于不同的边界条件之中时，地理阈值的表现可能是“过渡性”地转移。无论是非传递性转移的地理阈值，还是过渡性转移的地理阈值，都使地理系统中不可能具备唯一的、通用的或稳定的解。所谓“解”都是有条件的，都是在地理阈值约束下的解。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条