In this experiment, we performed Discrete Fourier Transform of 4-point sequence, zero padded signal (zero padding done to the 4 point sequence signal). Magnitude spectrum of the two case was drawn and observed that DFT coefficients are defined for w=2pik/n. Also the spectrum is discrete in the range 0 to pi.From the two cases when the signal was zero padded the length of the signal increased due to which frequency spacing got decreased which increases the Resolution the spectrum.We also observed that DFT produces periodic Results.Computations in DFT which included real Multiplication and Additions was also Calculated and we found that Discrete Fourier Transform is slow.
After knowing the concepts of Digital signal processing, now it was time to apply those concepts on the dsp kit. In this experiment, we were given a general overview of programming on a dsp kit in assembly level language. The DSP kit used was TMS320f28375. Basic arithmetical,logical and shifting Operations were performed on the kit. The instructions for above operations were implemented and register values before and after the execution were observed and noted down.
The DFT algorithm produces slow results as compared to FFT
ReplyDeleteVery informative!
ReplyDeletegreat work!
ReplyDeleteVery nice.
ReplyDeleteInformative
ReplyDeleteGood!!
ReplyDeleteYes the computational required is more in dft
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