Design bandpass FIR digital filter to extract sub-Hz low frequency signal - Dissertation Example

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Design bandpass FIR digital filter to extract sub-Hz low frequency signal

The aim of this research work is to design and performance evaluation of 0.2 – 0.5 Hz Butterworth, Blackman and Chebyshev digital semi adaptive filters. For this work XILINX and MATLAB software’s were used for the design. As pert of practical research work these designs were translated Using FPGA hardware SPARTAN-3E kit. These were optimized, analyzed, compared and evaluated keeping the sampling frequency at 1Hz for 64 orders. These filters designed using software were tested by passing a sinusoidal test signal of 5 Hz along with noise and the filtered Output signals are presented. Signal to Noise ratios were evaluated, plotted and comparative analysis carried out in this paper. Keywords Digital filter, XILINX and MATLAB software’s, Field Programmable Gate Arrays (FPGA), SPARTAN-3E, DSP Chips, DIP switches Contents ABSTRACT 2 Contents 3 1. INTRODUCTION. 5 2. LITERATURE REVIEW 7 4. RESULTS AND DISCUSSION. 44 6. CONCLUSION 54 Reference list 55 1. INTRODUCTION. 1.1 Problem statement. The possibility of real time and low cost digital filtering emerged in when general purpose of microcomputers were introduced in the 1970s. The earlier designed digital filters had limited precision and speed which limited them to a restricted their application to simple algorithms and low frequency . ...Show more


DESIGN OF A BANDPASS FIR DIGITAL FILTER TO EXTRACT SUB – HZ LOW FREQUENCY SIGNAL. Presented to In Partial Fulfillment of the Requirements of [Project Dated: ABSTRACT Technologies have developed and advanced rapidly in the field of digital signal processing due to advances made in high speed, low cost digital integrated chips…
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