查询词典 wavelet

Results showed the wavelet transform is a more efficient method in comparison with Fourier transform.

结果表明，小波变换的分析方法较传统的傅立叶变换更为有效。

According to the results of comparison between these methods of spectrum evaluation, a new method of power spectrum evaluation of welding arc sound is advanced by means of association of wavelet packet analysis with the Welch average method .

对试验系统采集到的焊接电弧声进行了小波包多层分解，并利用周期图法、Welch 平均法及AR模型法，对各频段信号进行功率谱估计。根据不同谱估计方法的对比结果，提出小波包分解结合Welch 平均法对焊接电弧声进行功率谱估计的新方法。通过对几种规范与飞溅率下的电弧声功率谱的初步分析，发现其功率谱分布具有一定的规律性，并且不同频段谱峰值及其对应频率与焊接飞溅具有相关

The comparison test was carried out based on Matlab and the results show the correctness of this designed wavelet algorithm.

利用Matlab软件进行了对比测试，测试结果表明所设计的小波分析算法的正确性。

In this paper, wavelet theory is applied in noise detection for electromotor in order to complete fault diagnosis of micro-power induction motor.

为利用电机噪声信号对电机进行出厂故障诊断，采用小波分析技术对小功率异步电动机噪声信号进行多分辨率分析。

Propose a Wavelet decomposition based Complete Fisher Analysis and Fuzzy Integral algorithm for face recognition.

提出一种基于小波分解的完全Fisher判别分析和模糊积分的人脸识别算法。

V-system is a complete orthogonal system on L_2[0,1], which was constructed in 2005 by the author of this paper. V-system of degree k is composed of piecewise k-order polynomials, has multiresolution property, and is a generalization of Harr wavelet.

V系统是作者2005年构造的一类L_2[0，1]空间上的正交完备函数系。k次V系统由k次分片多项式组成，具有多分辨特性，是Haar小波函数的推广。

Based on conditions on the conjugate quadrature filters constructing the orthogonal scaling function and wavelet, the orthogonal conditions were designed as an objective function which was minimized by the parameter optimization in the parameterized formula of complex conjugate quadrature filters. The compact support, symmetry, quasi-orthogonal filters and wavelets were obtained.

从构建正交尺度函数与小波的共轭正交滤波器的条件出发，把滤波器的正交条件设计成目标函数，利用共轭正交复滤波器的参数化算式进行参数优化使目标函数极小，得到紧支、对称、准正交的滤波器及其小波。

A novel MAP image restoration method in Dual-tree Complex Wavelet Transform domain is proposed.

提出了一种双树复小波变换域最大后验概率图像复原方法。

Analysis of reflection of signal transmitted in low voltage power line with complex wavelet.

低压电力线载波通信中信号反射现象的复小波研究。

Machinery noise fault diagnosis wavelet transform composite hypothesis test

机器噪声；故障诊断；小波变换；复合假设检验

Foods high in this vitamin include oily fish such as salmon, tuna and, and fish liver oils.

维生素D含量高的食物包括诸如大麻哈鱼、金枪鱼和鲭鱼之类的油鱼以及鱼肝油。

We need you to cosign our public letter demanding that press intimidation cease immediately, and that all charges be dropped.

我们需要您cosign我们的公共信，要求记者立即停止恐吓，并要求所有收费下降。