نتایج جستجو برای: lattice filter

تعداد نتایج: 215534  

Journal: :Frontiers in artificial intelligence and applications 2022

In this paper, we introduce implicative quasi-semi-lattices as a generalization of semi-lattices. We give the definition and present related properties an quasi-semi-lattice. Moreover, show that there exists isomorphism between lattice filters quasi-semi-lattice filter congruences on

1997
Tanja Karp Alfred Mertins

In this paper we connect the design of biorthogonal modulated filter banks with the idea of lifting schemes, which were proposed for the construction of biorthogonal wavelets. Based on this formulation, we derive a lattice-like structure for the polyphase components. As the rotationbased structures for the design and implementation of paraunitary modulated filter banks, our structure automatica...

Journal: :JNW 2013
Shuijuan Yu Zhenbi Li Xia Sun

Adaptive grid type filter is one of the important parts of adaptive filter. The paper improved the adaptive statistical gradient lattice filter algorithm to make this algorithm retain the best gradient algorithm of reflection coefficient convergence and stability and more suitable for saving the resources of the hardware implementation. This paper describes the algorithm. The algorithm is valid...

2012
Eduardo S. L. Gastal Manuel M. Oliveira

Figure 1: Performance on a GTX 280 GPU of our adaptivemanifold filter (AM) versus the permutohedral lattice (PL), and the guided filter (GF). The vertical axis shows time, in seconds, to filter a 1 Megapixel RGB color image. The shaded areas represent performance changes when σr varies from 1 (bottom curve) to 0.05 (top curve). The guided filter performance curve, in dashed red, is based on per...

2002
D Markel A H Gray Y T Chan J M M Lavoie J B Plant

A simple model characterizing the convergence properties of an adaptive digital lattice filter using gradient algorithms has been reported [ 11. This model is extended to the least mean square (LMS) lattice joint process estimator [SI, and to the least squares (LS) lattice and “fast” Kalman algorithms [9] -[16]. The models in each case are compared with computer simulation. The single-stage LMS...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده برق و کامپیوتر 1392

آلتراسوند یکی از روش های تصویربرداری است که هیج ضرری برای بدن ندارد، بنابرین نسبت به سایر دستگاه های پزشکی از محبوبیت و کاربرد بیشتری برخوردار است. طراحی بورد front-end یکی از چالشهای بزرگ در طراحی دستگاه سونوگرافی است که در آن سیگنالهای مدوله شده از بدن با دامنه بسیار کم باز می گردند که می توانند در رنج فرکانسی 2 تا 12 مگاهرتز کار کنند. تکنولوژی روز سعی در کوچک کردن مدارهای الکترونیکی و کمینه ...

Journal: :Discrete Mathematics 2015
Jean-Luc Baril Jean Marcel Pallo

The Tamari lattice of order n can be defined on the set Tn of binary trees endowed with the partial order relation induced by the well-known rotation transformation. In this paper, we restrict our attention to the subset Mn of Motzkin trees. This set appears as a filter of the Tamari lattice. We prove that its diameter is 2n − 5 and that its radius is n − 2. Enumeration results are given for jo...

2013
Neha Garg Rakesh Garg

This paper describes the generalized lattice model of human vocal tract for speech analysis, relating it to the all pole type linear prediction. A more natural synthesized speech can be achieved using Auto Regressive (AR) lattice model. Speech analysis is done using linear prediction. The structure of AR lattice model is numerically stable, which is main requirement in speech analysis and synth...

Journal: :J. Comput. Physics 2009
Denis Ricot Simon Marié Pierre Sagaut Christophe Bailly

For high-Reynolds number flows, the lattice Boltzmann method suffers from numerical instabilities that can induce local blowup of the computation. The von Neumann stability analysis applied to the LBE-BGK and LBE-MRT models shows that numerical instabilities occur in the high wavenumber range and are due to the interplay between acoustic modes and some other modes. As it is done in the LBE-MRT ...

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