In this paper, we treat a design problem for IIR digital filters described by rational transfer function in discrete space. First, we form the filter design problem using the modified least-squares (MLS) criterion and express it as the quadratic form with respect to the numerator and denominator coefficients. Next, we show the relaxation method using the Lagrange multiplier method in order to s...

This paper deals with the problem of digital IIR filter design. Two novel modifications are proposed to Particle Swarm Optimization and validated through novel application for design of IIR filter. First modification is based on quantum mechanics and proved to yield a better performance. The second modification is to take care of time dependency character of the constriction factor. Extensive s...

This paper establishes methodology for the robust and stable design of infinite impulse response (IIR) digital filters using hybrid differential evolution method. Differential Evolution (DE) is undertaken as a global search technique and exploratory search is exploited as a local search technique. DE is a population based stochastic real parameter optimization technique relating to evolutionary...

This paper introduces a class of two-channel hybrid analog and IIR digital filter banks that approximates perfect magnitude reconstruction. It is an extension of a recently introduced class but that uses IIR instead of FIR synthesis filters. Using IIR filters the computational complexity can be reduced. This is demonstrated by means of an example. The filters are designed by making use of linea...

This paper proposes a new method of a pole controlled IIR adaptive digital filter (ADF) with a preceded FIR section, which consists of parallel connected second order IIR filters controlled by each inherent identification error. The FIR part works to identify a flat delay and responses resulting from poles near the origin of z-plane. On the other hand, the IIR part identifies poles near the uni...

Any digital signal processing algorithm or processor can be reasonably described as a digital filter. The main advantage of an infinite impulse response (IIR) filter is that it can provide a much better performance than the finite impulse response (FIR) filter having the same number of coefficients. However, they might have a multimodal error surface. Differential evolution (DE) algorithm is a ...

Digital filters provide an important role in the world of communication. This paper proposes a literature review related to design the digital filters for audio application using multi rate signal processing. One of the important applications in multi rate signal processing is sub band coding. Humming sounds are present in the speech signal which cannot be removed easily and without filtering c...

The parallel processing systolic array architecture is designed for the real time VLSI spatio temporal 3D Infinite Impulse Response (IIR) frequency planar filter to achieve high throughput of one frame per clock cycle (OFPCC). To reduce the circuit complexity by designing the architecture, that is based on differential form transfer function of a 3D IIR frequency planar filter. The 3D Look Ahea...

In this paper we present a novel adaptive IIR digital filter composed of a cascade of an all-pass filter and a minimumphase filter. The coefficients of the filter are updated in such a way as to achieve minimum mean-squared error between the output of the unknown system and the output of the digital filter. Computer simulation verifies that the digital filter coefficients converge to the unknow...

www.xilinx.com 1 © 2009 Xilinx, Inc. All rights reserved. XILINX, the Xilinx logo, and other designated brands included herein are trademarks of Xilinx, Inc. All other trademarks are the property of their respective owners. A large percentage of filters implemented in the digital domain are Finite Impulse Response (FIR) filters. These filters are used over a wide range of sample rates and are w...