The main topics of this part of the laboratory are structures for digital filters (FIR/IIR filters in direct form and cascade form) and effects of finite-precision arithmetic (generation of round-off noise and effects of coefficient quantization). 1 Theoretical Overview This short overview only presents some of the most important points. For more complete descriptions see the references mention...

Digital image processing is required for almost all type of images. Live-cell images are one of those image requires digital image processing. This paper proposed a centre weighted median filter for livecell video enhancement. Three different types of filters were compared and results showed that the most effective filter is the centre weighted median filter. Key-Words: Live-cell, Centre Weight...

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...

This paper describes a linear phase digital filter with novel linear phase condition. A conventional linear phase digital filter is an FIR filter with coefficients of oddor even –symmetry and whose group delay NTs/2 where N is the number of the FIR filter taps and Ts is the sampling period; its group delay time resolution is Ts/2. We have generalized the linear phase condition, and with our nov...

Digital filters have three components: (1) unit delays, (2) multipliers, and (3) adders. These components can be implemented by using (1) a Bragg cell as a tapped delay line, (2) optical multiplication using the Bragg cell transmittance, and (3) photodetectors. Multiplexing techniques are shown to increase geometrically the data handling capacity of such filters. An architecture for a 2-D digit...

This Paper describes a simple computer-aided design approach for designing Infinite impulse response (IIR) digital filters. IIR filter is essentially a digital filter which depends not only upon the Input data but also upon one or more previous output values. A variety of techniques are available for the designing of IIR Filters. This Paper is based only upon Analog to digital mapping technique...

Digital finite impulse response (FIR) filters play a very important role in digital signal processing (DSP) applications ranging from image and video processing to wireless communication. Digital FIR filter is primarily composed of multipliers, adders and delay elements. Several techniques have been reported in the open literature to implement digital FIR filters using Field Programmable Gate A...

This paper presents the methodology for the design of Low pass FIR digital filter using hybrid Differential Evolution (DE) method. It is an evolutionary algorithm that exhibits the features of both the basic DE and HookeJeeves exploratory move to attain the optimal solution. The basic DE and exploratory move have the capability to exploit and explore the search space to design the optimal filte...