a fundamental aspect of signal processing is filtering. Filtering involves the manipulation of the spectrum of a signal by passing or blocking certain portions of the spectrum, depending on the frequency of those portions. In this paper, Digital filters are designed using frequency specifications. Matlab provides different options for digital filter design, which includes function, calls to fil...

This paper presents a review of phase locked loop (PLL) techniques. The different types of phase detector, loop filter and oscillators are discussed. It alleviates the problems associated with the classical analog PLL. Linear PLL, Digital PLL and All digital PLL models are implemented in Simulink Simulation results in Simulink gives the performance overview of the three types of PLL. Keywords— ...

Fig. 1. The digital two-pair. Abstracr -A general theorem is developed for the degree reduction of a bounded real (BR) digital filter transfer function, and is related to the extraction of a digital lossless two-pair from a BR function in such a manner that the remainder function is reduced order BR. The theorem finds applications in the synthesis of digital filter transfer functions in the for...

Digital images are often contaminated by impulse noise during image acquisition and/or transmission over communication channel. A new Hybrid Neuro-Fuzzy (HNF) filter for restoring digital images corrupted by impulse noise is proposed in this paper. The proposed filter is a hybrid filter obtained by aptly combining a Nonlinear Filter (NF), Canny Edge Detector (CED) and an Adaptive Neuro-Fuzzy In...

LANIX, Inc. introduced in March a powerful new version of its graphical filter design package available as part of the SystemView by ELANIX dynamic system simulator. This new filter design package gives designers the ability to design linear systems as Elliptic Filters and Sin t/t Filters and incorporate these filter types into their system simulation. These filters are essential for designers ...

The digital filters play an important role in the field of science and technology. Due to phase linearity and stability digital FIR filters are used in number of applications. The various design technology are developed for the designing of the digital filters using evolutionary techniques like particle swarm optimization(PSO), genetic algorithm(GA), differential evolution(DE) etc. and the modi...

Introduction This application note describes the implementation of digital filters in the Atmel AT6000-series FPGAs. Bit-serial digital signal processing is used to construct efficient Finite Impulse Response (FIR) and Infinite Impulse Response (IIR) filter macros that can be cascaded to create higher-order functions. We will briefly review the techniques first introduced in the application not...

Digital filters are pervasive in the present era of communication systems. As a result good digital filter performance is important and hence to design a digital finite impulse response (FIR) filter satisfying all the required condition is a demanding one. This report deals with the design of FIR digital filter using hamming window technique. This window is optimized to minimize the maximum (ne...