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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 resulting optimization problem is nonlinear and nonconvex with a nonlinear continuous inequality constraint. Stability of the designed filters are discussed.  ...  Stability of the designed filters are also discussed. The formulated optimization problem is nonlinear and nonconvex with a nonlinear continuous inequality constraint.  ... 
doi:10.1109/tsp.2010.2048316 fatcat:xggvlkn4sfhp3alcyu36epww2u

On The Design Of Low Delay Nearly-Pr And Pr Fir Cosine Modulated Filter Banks Having Approximate Cosine-Roll Transition Band

S.C. Chan, S. S. Yin
2004 Zenodo  
we end up with a nonlinear-phase lowpass FIR filter design problem having a cosine-shaped transition band as shown in (8) .  ...  together with additional linear and convex quadratic constraints.  ... 
doi:10.5281/zenodo.38686 fatcat:au2dbhlowvfwjpizfxwpkalhbi

Global Optimum Design of Uniform FIR Filter Bank With Magnitude Constraints

C.Z. Wu, K.L. Teo, V. Rehbock, H.H. Dam
2008 IEEE Transactions on Signal Processing  
Index Terms-Constraint transcription, filled function, finite impulse response (FIR) filter bank, global optimization.  ...  The optimum design of a uniform finite impulse response filter bank can be formulated as a nonlinear semi-infinite optimization problem.  ...  Then, the design of this filter bank is formulated as a nonlinear optimization problem with group delay and amplitude distortion constraints.  ... 
doi:10.1109/tsp.2008.927803 fatcat:3nv7zrjfx5e4bpf6a46w2h6fqi

Peak-constrained least-squares optimization

J.W. Adams, J.L. Sullivan
1998 IEEE Transactions on Signal Processing  
We showed how to use PCLS optimization to design symmetric FIR digital filters and windows in [1] and [2] .  ...  It states that the tradeoff monotonically decreases and terminates with zero slope for all types of filters, including IIR digital filters, complex FIR digital filters, and analog filters.  ...  ACKNOWLEDGMENT The authorswish to thank the reviewers for their comments and suggestions.  ... 
doi:10.1109/78.655417 fatcat:acoerexiynfn5fqn5so3pskioy

Design of Constrained Causal Stable IIR Filters Using a New Second- Order-Cone-Programming-Based Model-Reduction Technique

S. C. Chan, K. M. Tsui, K. W. Tse
2007 IEEE transactions on circuits and systems - 2, Analog and digital signal processing  
This brief proposes a new method for designing infinite-impulse response (IIR) filter with peak error and prescribed flatness constraints.  ...  Therefore, linear and convex quadratic inequalities such as peak error constraints and prescribed number of zeros at the stopband for IIR filters can be imposed and solved optimally.  ...  least-squares (LS) or minimax errors, and the stability constraint are highly nonlinear functions of the filter coefficients.  ... 
doi:10.1109/tcsii.2006.883831 fatcat:yh4jatf7mbautk2bkd5job574i

Design Of Constrained Iir And Interpolated Iir Filters Using A New Semi-Definite Programming Based Model Reduction Technique

K.W. Tse, K. M. Tsui, S.C. Chan
2004 Zenodo  
CONCLUSION A new method for designing IIR filters with peak error and magnitude flatness constraints is proposed.  ...  For comparison purpose, a FIR counterpart of the above I-IIR filter are designed, where ) (z G and ) (z I are linear-phase FIR lowpass filters with lengths 41 and 19, respectively.  ... 
doi:10.5281/zenodo.38269 fatcat:7sv6vrsv5fbjdptk3v4ybqe4sy

Design of broadband beamformers robust against gain and phase errors in the microphone array characteristics

S. Doclo, M. Moonen
2003 IEEE Transactions on Signal Processing  
This paper describes two design procedures for designing broadband beamformers with an arbitrary spatial directivity pattern, which are robust against gain and phase errors in the microphone array characteristics  ...  The first design procedure optimizes the mean performance of the broadband beamformer and requires knowledge of the gain and the phase probability density functions, whereas the second design procedure  ...  ACKNOWLEDGMENT The authors would like to thank the reviewers for their valuable comments and suggestions.  ... 
doi:10.1109/tsp.2003.816885 fatcat:erl3mgpcdfgspmmz4jgww4kryi

Multi-Plet Two-Channel Perfect Reconstruction FIR and Causal Stable IIR Filter Banks

K. M. Tsui, S. C. Chan
2006 IEEE Transactions on Circuits and Systems I Fundamental Theory and Applications  
The design procedure is very general and it applies to both linear-phase/low-delay FIR and IIR multi-plet FBs.  ...  PR FB with a much wider transition band is first designed using nonlinear optimization in order to obtain a symmetric frequency response and prescribed passband and stopband ripples.  ...  However, since the numerator is designed with LS design criterion after determining the denominator, larger ripple error is usually encountered near the band-edge of the model-reduced filter, which in  ... 
doi:10.1109/tcsi.2006.885694 fatcat:dp2efx6o3jf5vbd67hvbk3rem4

On the Design of Nearly-PR and PR FIR Cosine Modulated Filter Banks Having Approximate Cosine-Rolloff Transition Band

S.S. Yin, S.C. Chan, K.M. Tsui
2008 IEEE Transactions on Circuits and Systems - II - Express Briefs  
Next, a design procedure based on SOCP is presented. The low-pass CR filter in (4) can be designed by using SOCP with an additional amplitude constraint imposed at .  ...  Most design methods [5] , [6] are focused on NPR CMFBs with linear-phase (LP) PFs.  ... 
doi:10.1109/tcsii.2007.916733 fatcat:tjgjbt6ubbgxveuscbf6j7jlpm

On the design and implementation of FIR and IIR digital filters with variable frequency characteristics

C.K.S. Pun, S.C. Chan, K.S. Yeung, K.L. Ho
2002 IEEE transactions on circuits and systems - 2, Analog and digital signal processing  
A least squares (LS) approach is proposed for the design of FIR VDFs by expressing the impulse response of the filter as a linear combination of basis functions.  ...  Index Terms-Design and implementation, finite-impulse response (FIR) filters, infinite-impulse response (IIR) filters, least squares design, model reduction, multiplier block, variable or tunable digital  ...  Deng for reprints of his papers on variable digital filters and useful discussion, which greatly improved the presentation of this paper.  ... 
doi:10.1109/tcsii.2002.807574 fatcat:6xmdw6jth5enhf5kwyena254lu

Design of optimal band-stop FIR filter usingL1-norm based RCGA

Apoorva Aggarwal, T.K. Rawat, Manjeet Kumar, D.K. Upadhyay
2018 Ain Shams Engineering Journal  
In this paper, an optimal design of linear phase digital finite impulse response (FIR) band stop (BS) filter using the L 1 -norm based real-coded genetic algorithm (L 1 -RCGA) is presented.  ...  This leads to a global optimal solution along with the improvement in filter design with same specifications.  ...  In addition, to elevate the importance of the proposed results, the designed filters are compared with the existing filter design methodologies such as PSO, LS, Kaiser window and PM algorithm.  ... 
doi:10.1016/j.asej.2015.11.022 fatcat:ryloq6dtl5dcpiznanrokyf4gi

Structure Evolution Based Optimization Algorithm for Low Pass IIR Digital Filter Design

Lijia Chen, Mingguo Liu, Jianfeng Yang, Jing Wu, Zhen Dai
2017 International Journal of Computational Intelligence Systems  
Simulation results validate that the algorithm designs diversified structures of digital filters and they meet target frequency specifications and structure constraints tightly.  ...  They are evaluated according to the mean squared error (MSE) between the designed and the desired frequency responses.  ...  This work was also supported by the Foundation of Henan University, China, with the grant numbers: 2008YBZR028 and ZZJJ20140037.  ... 
doi:10.2991/ijcis.2017.10.1.69 fatcat:qmd2qdcd6jak5e7c2upk7jzvp4

Fuzzy based design of digital IIR filter using ETLBO

Damanpreet SINGH, Jaspreet Singh DHILLON
2016 Turkish Journal of Electrical Engineering and Computer Sciences  
A multiobjective IIR digital filter design problem takes into consideration magnitude and phase response of the filter simultaneously, while satisfying stability constraints on the coefficients of the  ...  Furthermore, a decision-making methodology based on fuzzy set theory is applied to handle nonlinear and multimodal design problems of the IIR digital filter.  ...  The multimodal and nonlinear error surface of digital IIR filters may lead to the trapping of conventional design algorithms at a local minimum [1, 5] .  ... 
doi:10.3906/elk-1410-107 fatcat:2kq4lzj5bjgnhogpb35omv7ove

IIR Approximation of FIR Filters Via Discrete-Time Vector Fitting

Ngai Wong, Chi-Un Lei
2008 IEEE Transactions on Signal Processing  
We present a novel technique for approximating finite-impulse-response (FIR) filters with infinite-impulse-response (IIR) structures through extending the vector fitting (VF) algorithm, used extensively  ...  Pole flipping and maximum pole radius constraint guarantee stability and robustness against finite-precision implementation.  ...  LS fit to the objective FIR frequency samples ff(z k )g in terms of both magnitude and phase.  ... 
doi:10.1109/tsp.2007.908935 fatcat:6wlkows24rgyjgqsiaa5ekigh4

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.  ...  Compared with the existing iterative WLS method that solves a series of approximately linearized WLS minimization problems, the proposed noniterative one can yield much better design results with significantly  ...  In [19] , a minimax method has been proposed for designing an allpass VFD filter with minimum phase-delay error.  ... 
doi:10.1109/tcsi.2005.854406 fatcat:ly35p3lcjbegdfuqptuhztva2y
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