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Allpass filter design and applications

M. Lang
1998 IEEE Transactions on Signal Processing  
The problem of allpass lter design for phase approximation and equalization in the Chebyshev sense is solved by using a generalized Remez algorithm.  ...  Possible applications are: design of lters with a desired phase response (e.g., a delay element), the design of phase equalizers, or the design of recursive lters with magnitude prescriptions using parallel  ...  Applications: Fig. 1 shows two important applications of an allpass lter design.  ... 
doi:10.1109/78.709538 fatcat:h3kdpmeeqberzgi2urlwzhfirq

Design of doubly-complementary IIR digital filters using a single complex allpass filter, with multirate applications

P. Vaidyanathan, P. Regalia, S. Mitra
1987 IEEE Transactions on Circuits and Systems  
Multirate filter bank applications (quadrature mirror filtering) are outlined.  ...  Abslraci --It is shown that a large class of real-coefficient doubly-complementary IIR transfer function pairs can be implemented by means of a single complex allpass filter.  ...  Integrated Circuits and Applications and Editor of Active Inductorless Filters, Co-Editor of Modern Filter Theory and Design (with G.  ... 
doi:10.1109/tcs.1987.1086156 fatcat:j6uslaijdbfglmsydhq3sqnvya

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.  ...  After expressing each coefficient of an allpass VFD filter as a polynomial of the VFD parameter , we develop a noniterative technique for finding the optimal polynomial coefficients, and show that the  ...  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

Frequency-Dependent Schroeder Allpass Filters

Sebastian J. Schlecht
2019 Applied Sciences  
Since the introduction of feedforward–feedback comb allpass filters by Schroeder and Logan, its popularity has not diminished due to its computational efficiency and versatile applicability in artificial  ...  At the same time, we also improve upon Gerzon's allpass filter as our design is both less restrictive and computationally more efficient.  ...  Section 2 introduces some filter design background and reviews related Schroeder allpass filter structures.  ... 
doi:10.3390/app10010187 fatcat:zniabzzoqne4ljsy5muqw74vje

Design of Near-Allpass Strictly Stable Minimal-Phase Real-Valued Rational IIR Filters

C. Yuk-Fan Ho, B. Wing-Kuen Ling, Zhi-Wei Chi, M. Shikh-Bahaei, Yan-Qun Liu, Kok-Lay Teo
2008 IEEE Transactions on Circuits and Systems - II - Express Briefs  
Computer numerical simulation result shows that the designed filter satisfies all functional inequality constraints and achieves a small maximum absolute phase error.  ...  In this brief, a near allpass strictly stable minimal phase real valued rational IIR filter is designed so that the maximum absolute phase error is minimized subject to a specification on the maximum absolute  ...  For these applications, the allpass characteristic is relaxed and a near allpass strictly stable minimal phase real valued rational IIR filter is designed.  ... 
doi:10.1109/tcsii.2008.922417 fatcat:4g5fqjyckvcwxect27boz4ani4

Loss-Tolerant Allpass-Based Filter Bank Design Suitable for Integrated Optics

Yujia Wang, Ryan Aguinaldo, Truong Nguyen
2014 IEEE Photonics Journal  
The proposed design is entirely based on the principle of loss-exhibiting allpass filtering, which is a behavior naturally observed in a variety of microscale optical components.  ...  This paper presents a novel design algorithm for a filter bank structure that is suitable for photonic integrated circuits.  ...  In contrast to previous filter design methods, as discussed below, we invoke a design algorithm based on the theory of filter banks and allpass processing.  ... 
doi:10.1109/jphot.2014.2360301 fatcat:ii32bvgn3vabtoqz4urfeab5qe

Design of IIR digital allpass filters based on eigenvalue problem

Xi Zhang, H. Iwakura
1999 IEEE Transactions on Signal Processing  
We have designed many allpass filters with various K 3 and observed that only when 02 K 3 0 3 , the stable allpass filter can be obtained.  ...  Design of IIR Digital Allpass Filters Based on Eigenvalue Problem Xi Zhang and Hiroshi Iwakura Abstract-A new method is proposed for designing IIR digital allpass filters with an equiripple phase response  ...  Design of Efficient FIR Filters for the Amplitude Response: by Using Universal Weights 1 Balbir Kumar and Ashwani Kumar Abstract-An efficient design of a linear-phase, FIR structure yielding optimal  ... 
doi:10.1109/78.740143 fatcat:kisuwrgnubegpedtbbmaavxkum

Design of absorptive microwave filters using allpass networks in a parallel-cascade configuration

Andrew C. Guyette, Ian C. Hunter, Roger D. Pollard
2009 2009 IEEE MTT-S International Microwave Symposium Digest  
A general method for designing the microwave allpass networks is given. Bandpass and bandstop microstrip prototypes were designed, built, and tested.  ...  A new approach to designing absorptive microwave filters using allpass networks in a parallel-cascade configuration is presented.  ...  This approach is applicable to both bandpass and bandstop filters, although the attenuator adds extra loss, which becomes increasingly significant as the number of cascaded allpass networks is increased  ... 
doi:10.1109/mwsym.2009.5165801 fatcat:bdtn7saqarfoxip2kq4eqk4yba

Simple Design Of Fractional Delay Allpass Filters

Vesa Valimaki
2000 Zenodo  
Design Example and Comparison As an example, a wideband fractional delay allpass filter is designed.  ...  The values of prototype filter order M and the allpass filter N are practically unlimited, since the design formula is not prone to numerical problems.  ... 
doi:10.5281/zenodo.37523 fatcat:jz5dff2p3zaqlb4hx3zv6ks57u

Low-sensitivity design and implementation of allpass based fractional delay digital filters

Kamelia Nikolova, Georgi Stoyanov, Masayuki Kawamata
2009 2009 European Conference on Circuit Theory and Design  
A low-sensitivity design and implementation of allpass structures based fractional delay (FD) filters is proposed in this paper.  ...  A new second order allpass section, suitable for such design, is proposed and compared with the other known secondorder sections. The design procedure is verified experimentally.  ...  CONCLUSIONS A very efficient low sensitivity design procedure of allpass FD filters, based on a phase-sensitivity minimization of each individual first-and second-order allpass section in the filter cascade  ... 
doi:10.1109/ecctd.2009.5275050 dblp:conf/ecctd/NikolovaSK09 fatcat:zwwghuy52vfztnnqihpakil3xq

Parametric Phase Equalizers For Warped Filter-Banks

Heinrich Loellmann, P. Vary
2006 Zenodo  
The design of general allpass phase equalizers is outlined and a new parametric allpass phase equalizer is proposed. A design example for the discussed phase equalizers is given in Sec. 5.  ...  For such applications, a low computational complexity and low signal delay is required.  ... 
doi:10.5281/zenodo.40085 fatcat:lljl6on7zncs5byp7msujk4ngm

Design of critically subsampled DFT filter-banks with allpass polyphase filters and near-perfect reconstruction

Heinrich W. Lollmann, Peter Vary
2009 2009 IEEE International Conference on Acoustics, Speech and Signal Processing  
This problem is solved by stable allpass polyphase synthesis filters which are designed by analytical closed-form expressions.  ...  The analysis filter-bank consists of allpass polyphase filters to achieve a high frequency selectivity with a low algorithmic complexity and low signal delay.  ...  This design achieves near-perfect reconstruction (which is sufficient for many applications) and avoids the problem of non-causal filters.  ... 
doi:10.1109/icassp.2009.4960301 dblp:conf/icassp/LollmannV09 fatcat:3hs6ztszyvff3eigxzyrn7sali

Design of nonuniform near allpass complementary FIR filters via a semi-infinite programming technique

C.Y.F. Ho, B.W.K. Ling, Y. Liu, P.K.S. Tam, K.L. Teo
2005 IEEE Transactions on Signal Processing  
In this paper, we consider the problem of designing a set of nonuniform near allpass complementary FIR filters.  ...  Index Terms-allpass complementary FIR filters, nonuniform frequency bands, semi-infinite programming, dual parameterization.  ...  Assume the transition bandwidths of all the filters be 0.05 and the allpass function be  The responses of the filters and the allpass complementary error designed via our approach are, respectively,  ... 
doi:10.1109/tsp.2004.838960 fatcat:pvqkffconrfxxfavzjepsy7xta

Wavelet Filter Banks Using Allpass Filters [chapter]

Xi Zhang
2020 Wavelet Theory [Working Title]  
Allpass filter is a computationally efficient versatile signal processing building block. The interconnection of allpass filters has found numerous applications in digital filtering and wavelets.  ...  Firstly, we describe two classes of orthogonal wavelet filter banks composed of two real allpass filters or a complex allpass filter, and then consider design of orthogonal filter banks without or with  ...  Example 2: We consider design of filter banks using a complex allpass filter with N ¼ 4 and L ¼ 8, 4, 0. We have designed H 0 z ðÞby using the design method proposed in [20] .  ... 
doi:10.5772/intechopen.94519 fatcat:ftiog2o3erb7xbogeovlfbkkcu

Allpass VFD Filter Design

Hai Huyen Dam, Kok Lay Teo
2010 IEEE Transactions on Signal Processing  
Cantoni for useful discussions about allpass VFD filter structure.  ...  The advantage of the allpass VDF filters is that they can achieve higher design accuracy than FIR filters in terms of frequency response errors for applications that require unity gain.  ...  Allpass VFD Filter Design Hai Huyen Dam and Kok Lay Teo Abstract-This correspondence proposes a general design for allpass variable fractional delay (VFD) digital filters with minimum weighted integral  ... 
doi:10.1109/tsp.2010.2048316 fatcat:xggvlkn4sfhp3alcyu36epww2u
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