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Simple Design Of Fractional Delay Allpass Filters

Vesa Valimaki
2000 Zenodo  
Publication in the conference proceedings of EUSIPCO, Tampere, Finland, 2000  ...  Many design methods have been proposed for fractional delay filters of FIR and IIR type [1, 2] .  ...  Design Example and Comparison As an example, a wideband fractional delay allpass filter is designed.  ... 
doi:10.5281/zenodo.37523 fatcat:jz5dff2p3zaqlb4hx3zv6ks57u

Low-Sensitivity Design of Allpass Based Fractional Delay Digital Filters [chapter]

G. Stoyanov, K. Nikolova, M. Kawamat
2011 Digital Filters  
of the three realizations for several values of the fractional part d of the phase-delay time are given.  ...  Another group of design methods encompasses all the minimax approaches to allpass FDFs design in terms of minimal phase error, phase-delay or group-delay error (Laakso et al., 1996) .  ...  Low-Sensitivity Design of Allpass Based Fractional Delay Digital Filters, Digital Filters, Prof.  ... 
doi:10.5772/15577 fatcat:xp7xd3z2avaw3h6bbuzubbsfly

Wls Quasi-Equiripple Design Of Variable Fractional Delay Fir Filters

Jie-Cherng Liu
2006 Zenodo  
Publication in the conference proceedings of EUSIPCO, Florence, Italy, 2006  ...  In the designing of the variable fractional delay filter, the desired range of both frequency and delay must be defined.  ...  Therefore the filter coefficients must be designed to response or be a function of the fractional delay d.  ... 
doi:10.5281/zenodo.53536 fatcat:rf36ugn6ijaz5nftsgmolkeqia

Closed-Form Design Of Digital Fractional-Delay Filters With Constant Magnitude And Variable Delay

Zhang Xiaojing, T.I. Laakso, Martin Makundi
2005 Zenodo  
Publication in the conference proceedings of EUSIPCO, Antalya, Turkey, 2005  ...  INTRODUCTION In many applications, a variable fractional-delay (FD) filter is needed [1] .  ...  fractional delay values D ∈ [−0.5, 0.5).  ... 
doi:10.5281/zenodo.39237 fatcat:h6l4nfzgcjcofgtdbakzpwcj2e

Integrated Design of IIR Variable Fractional Delay Digital Filters with Variable and Fixed Denominators [chapter]

Hon Keung, Aimin Jiang
2011 Digital Filters  
The stability of a designed VdIIR VFD filter is ensured if its maximum pole radius is within the unity circle at each of the fractional delay values obtained from a dense grid of fractional delay t  [  ...  group delay of a designed VFD filter.  ...  Integrated Design of IIR Variable Fractional Delay Digital Filters with Variable and Fixed Denominators, Digital Filters, Prof.  ... 
doi:10.5772/15741 fatcat:pxbgmtaedrbdfih2qlf3hjqxdu

Accurate Minimax Design Of Variable Fractional-Delay Filters Using Linearized Octagonal Constraints

Tian-Bo Deng
2011 Zenodo  
Publication in the conference proceedings of EUSIPCO, Barcelona, Spain, 2011  ...  The simplest variable fractional-delay (VFD) filter is the socalled Lagrange-type VFD filter [6] , but its passband width is very narrow.  ...  INTRODUCTION Variable digital filters have instantly changeable magnitude responses [1] - [4] or/and fractional-delay (FD) responses [5, 6] .  ... 
doi:10.5281/zenodo.42272 fatcat:rfvby3arffbpleli4ocf5emjq4

Closed-Form Design of All-Pass Fractional Delay Filters

S.-C. Pei, P.-H. Wang
2004 IEEE Signal Processing Letters  
Numerical examples indicate that the phase delays of the proposed filters are flat around DC. Index Terms-Allpass filter, fractional delay filter, minimum phase, phase delay.  ...  In this letter, we propose a novel all-pass (AP) fractional delay filter whose denominator polynomial is obtained by truncating the power series of a certain function.  ...  this letter, is the fractional part of the delay.  ... 
doi:10.1109/lsp.2004.835473 fatcat:h5gurqqscvdgbdudwzcvqvndyu

Closed-Form Design Of Variable Fractional Delay Filter Using Discrete Fourier Transform

Su-Ling Lee, Chien-Cheng Tseng
2009 Zenodo  
Publication in the conference proceedings of EUSIPCO, Glasgow, Scotland, 2009  ...  Fig. 2 Fig. 3 23 The input/output relation of fractional delay filter. The designed results of a fractional delay filter. (a) Magnitude response. (b) Group delay response.  ...  One is the fixed fractional delay (FFD) filter design, the other is variable fractional delay (VFD) filter design.  ... 
doi:10.5281/zenodo.41431 fatcat:yfkdl4xwvjcjri22nktrqzo7ry

Design Of Variable Fractional-Delay Digital Filters Using Weighted-Least-Squares Singular-Value-Decomposition

Tian-Bo Deng
2004 Zenodo  
Publication in the conference proceedings of EUSIPCO, Viena, Austria, 2004  ...  Fig. 1 . 1 Absolute WLS-SVD error of variable frequency response. Fig. 2 .Fig. 3 . 23 Variable Absolute error of variable fractional-delay.  ...  INTRODUCTION The variable digital filters with variable fractional-delay (VFD) responses have been found useful in the applications such as timing adjustment in digital receivers, speech coding and synthesis  ... 
doi:10.5281/zenodo.38301 fatcat:4xnkvyqvdjf63iuhqlrxtbpqj4

Optimal Design of All-Pass Variable Fractional-Delay Digital Filters

Wei Rong Lee, L. Caccetta, V. Rehbock
2008 IEEE Transactions on Circuits and Systems Part 1: Regular Papers  
This paper presents a computational method for the optimal design of all-pass variable fractional-delay (VFD) filters aiming to minimize the squared error of the fractional group delay subject to a low  ...  Index Terms-All-pass filter, constrained least-squares (LS) design, variable fractional-delay (VFD) filters, weighted LS (WLS) design.  ...  A survey of fractional-delay filter design is presented in the tutorial paper [10] .  ... 
doi:10.1109/tcsi.2008.916686 fatcat:xpuxt373lbghfkxnp4ric4i3je

Noniterative WLS design of allpass variable fractional-delay digital filters

Tian-Bo Deng
2006 IEEE Transactions on Circuits and Systems I Fundamental Theory and Applications  
Index Terms-Allpass variable fractional-delay (VFD) digital filter, iterative weighted-least-squares (WLS) design, noniterative WLS design, VFD digital filter, WLS design.  ...  This paper presents a noniterative weighted-leastsquares (WLS) method for designing allpass variable fractional-delay (VFD) digital filters.  ...  The survey paper [9] details some designs, implementations, and applications of fixed fractional-delay (FFD) filters as well as VFD filters.  ... 
doi:10.1109/tcsi.2005.854406 fatcat:ly35p3lcjbegdfuqptuhztva2y

Design of 1-D Stable Variable Fractional Delay IIR Filters

Hui Zhao, Hon Keung Kwan
2007 IEEE transactions on circuits and systems - 2, Analog and digital signal processing  
In this brief, a two-stage approach for the design of 1-D stable variable fractional delay infinite-impulse response (IIR) digital filters is proposed.  ...  Then, the final design is determined by fitting each of the fixed delay filter coefficients as a 1-D polynomial. Two design examples are given to show the effectiveness of the proposed design method.  ...  functions of the fractional delay .  ... 
doi:10.1109/tcsii.2006.882802 fatcat:u65dufc2wfezfclwyvgzzcv3tu

DESIGN OF OPTIMAL FRACTIONAL DELAY-IIR FILTER USING EVOLUTIONARY ALGORITHMS

Parvinder Kaur
2017 International Journal of Advanced Research in Computer Science  
The Fractional Delay (FD) filters are used to give fraction of delay to signal and the FD-IIR filters are being used in various applications of signal processing.  ...  optimal fractional delay-IIR filter.  ...  Design of Fractional delay IIR filter problem: Digital fractional delay filter has ideal frequency response as given below [14] : (1) where w is digital frequency, w є [0, π] and v is fractional delay  ... 
doi:10.26483/ijarcs.v8i7.4295 fatcat:q432e22oxvftlmefxg6ecumjbe

Design of 1-D stable variable fractional delay IIR filters

Hui Zhao, H.K. Kwan
2005 2005 International Symposium on Intelligent Signal Processing and Communication Systems  
In this brief, a two-stage approach for the design of 1-D stable variable fractional delay infinite-impulse response (IIR) digital filters is proposed.  ...  Then, the final design is determined by fitting each of the fixed delay filter coefficients as a 1-D polynomial. Two design examples are given to show the effectiveness of the proposed design method.  ...  functions of the fractional delay .  ... 
doi:10.1109/ispacs.2005.1595460 fatcat:hlytr7wzpvdxxk45ptrqcpm7im

Design of delayed fractional state variable filter for parameter estimation of fractional nonlinear models

Walid Allafi, Ivan Zajic, Kotub Uddin, Zhonghua Shen, James Marco, Keith Burnham
2018 Nonlinear dynamics  
The required fractional time derivatives of measured input-output data are computed by a proposed delayed fractional state variable filter.  ...  The presented approaches for designing the fractional Butterworth filter are the so-called, square root base and compartmental fractional Butterworth design.  ...  Conflicts of interest: All authors declare that they have no conflict of interest. a) Transport-delay filter. (b) Delayed fractional state variable filter.  ... 
doi:10.1007/s11071-018-4519-0 fatcat:ey5ka27vkfh55h5qrdkymj3dia
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