EC6502 DSP Notes, PRINCIPLES OF DIGITAL SIGNAL PROCESSING Lecture Notes – ECE 5th SEM Anna University

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EC6502  DSP Notes

Anna University Regulation 2013 ECE EC6502  DSP Notes for all 5 units are provided below. Download link for ECE 5th SEM EC6502  PRINCIPLES OF DIGITAL SIGNAL PROCESSING Lecture Notes are listed down for students to make perfect utilization and score maximum marks with our study materials.

 EC6502 – PRINCIPLES OF DIGITAL SIGNAL PROCESSING

If N/2 can be further divided by 2, then this same procedure can be used to calculated the N/2-point DFTs. It is useful to illustrate the radix-2 FFT algorithm with a flowgraph, as developed here. The expression above shows how an N-point DFT can be computed using two N/2-point DFTs.

After taking the two N/2-point DFTs it only remains to multiply the result of the second DFT with the terms Wk N and to combine the results by adding and subtracting. The flowgraph for the sum and di↵erence operation is called the butterfly.

This unit will be used as a shorthand notation for the sum and di↵erence, to simplify the flowgraphs for the FFT.

 

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