wavelet packet basis 中文意思是什麼
wavelet packet basis
解釋
小波包基-
The feature extraction in brain - computer interface based on best basis of wavelet packet
腦機介面中基於小波包最優基的特徵抽取 -
An automated de - noising algorithm based on the energy of wavelet packet not donoho ' s threshold algorithm is established. a gear feature vibration signal extraction method using the wavelet packet energy is proposed, which can separate gear meshing vibration, noise vibration and gear fault vibration signal from the original gearbox case vibration signal. basis pursuit ( bp ) algorithm is introduced into the filed of mechanical signal de - noising and feature extraction for the first time
第三章擺脫了donoho的閾值消噪思想，從能量的角度建立了基於小波包的自動消噪演算法；提出基於小波包能量分佈的齒輪故障特徵信號提取方法，可以將齒輪嚙合振動信號、干擾振動信號以及故障沖擊振動信號從原始齒輪振動信號中分離出來；首次將基追蹤消噪演算法引入到機械故障信號的消噪與特徵提取上，通過對齒輪故障信號的消噪，表明了它的有效性，並對影響該方法實際應用效果的因素進行了全面的分析，同時也指出了該方法存在的局限性。 -
On the basis of wavelet packet filtering method, a noise testing method for electric motor was proposed in this paper
基於小波分析方法，提出一種應用計算機聲卡的電動機噪聲檢測方案。 -
This article shows a new method to construct symmetric compacted orthogonal wavelet packet basis ： the original compacted orthogonal wavelet basis and scaling function are decomposed into symmetric and anti - symmetric parts respectively ， then we prove that three of four parts is also wavelet basis and another is scale function. we find it simple to process 1 - d signal. finally, by these results above, all the results above are applied to dsp
本文提出一種新的對稱化方法，把一大類緊支集實值的非對稱正交小波函數分解成對稱和反對稱兩部分，並證明了其相應的兩部分仍然構成對稱和反對稱的緊支正交小波基，而且我們發現尺度函數對稱和反對稱部分分別是某子空間的尺度函數和小波函數。 -
And the fault diagnosis system on the basis of matlab software platform pick up the fault characteristic eigenvectors through the method of wavelet packet analysis and realize the fault diagnosis using the technology of neural network
故障診斷系統以matlab作為軟體平臺，用小波包對數據進行處理並提取故障特徵向量，並利用神經網路技術實現泵閥的故障診斷功能。 -
The other is the local cosine bases developed as a kind of orthogonal basis based on the fourier analysis and wavelet - packet theory. in this thesis, theoretical analysis and numerical applications are mainly focused on the beamlet - domain wave field extrapolation using g - d frame propagators. the whole thesis consists of six chapters
通過對具體信號的分析，對不同變換方法的信號表示效率進行了對比，並總結了g - d框架及對其進行尺度擴展組成的gabor函數族在應用於波場相關的研究中時，優于其它正交分解方法的特性。 -
The method directly executes wavelet packet decomposition of handwriting texture using wavelet packet basis db6 at scaling 3 in 2d space, then reconstructs the decomposition coefficient of 15 wavelet packet best basis which are took by shannon entropy cost function
該方法直接在二維空間上由db6小波包基對筆跡紋理實施3尺度小波包分解，再在由以香農熵為代價函數提取得到的15個小波包最好基處對分解系數實行重構。 -
Signal denoising algorithm and its application based on best wavelet packet basis
基於最優小波包基的信號去噪演算法及其應用
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