24-12-2012, 12:42 PM
DISCRETE FOURIER TRANSFORM
AIM
Write a program in C and MATLAB to compute the Discrete Fourier Transform of a given discrete sequence x(n). Verify the same on TMS320C6711 DSP kit, MATLAB.
TOOLS REQUIRED :
2.1 TMS 320C 6711 Kit,
2.2 Full version CCS s/w,
2.3 DSK 6711 s/w,
2.4 MATLAB s/w.
THEORY:
Following are the different transforms used to obtain required frequency domain representation of any given time domain representation.
Laplace Transform.
Fourier Transform.
Z Transform.
Discrete Fourier Transform.
Laplace transform is used for only continuous time signals and Z transform is used for only discrete time signals. Fourier transform is used for both continuous and discrete time signals.
The DFT is used to convert N-point discrete time sequence x(n) to an N-point frequency domain sequence X(k).