EL 6183 Week 7

EL 6183 Week 7 - Monday 03/23/09 EL 6183 / EE 4163 DIGITAL...

Info iconThis preview shows pages 1–8. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Monday 03/23/09 EL 6183 / EE 4163 DIGITAL SIGNAL PROCESSING LAB DTFT DFT FFT and LAB # 7 EL 6183 EE 4163 EL 6183 EE 4163 Digital Signal Processing Lab Digital Signal Processing Lab EL 6183 EL 6183 Digital Signal Processing Lab Digital Signal Processing Lab 1. Quiz # 3 today/tomorrow 1. Discrete Time Fourier Transform 1. Discrete Fourier Transform 1. Fast Fourier Transform Tuesday March 23, 2009 EL 6183 EL 6183 Digital Signal Processing Lab Digital Signal Processing Lab Fourier Transform in the Digital Domain x(t) X(F) x s (nT) Xs(F) x s (nT) x(n) X(f) s F F f with = EL 6183 EL 6183 Digital Signal Processing Lab Digital Signal Processing Lab Fourier Transform in the Digital Domain X(F) F s Fs/2 Fs/2- Fs/2 Xs(F) 1 1/2 1/2- 1/2 1 f: 1 1/2 1/2- 1/2 X(f) 1 EL 6183 EL 6183 Digital Signal Processing Lab Digital Signal Processing Lab Fourier Transform in the Digital Domain 1/2- 1/2 X(f) f DTFT of x(n) = + =- =- n n fn j e n x f X 2 ). ( ) ( f is a continuous variable. It is almost impossible to compute and store X(f) as is. EL 6183 EL 6183 Digital Signal Processing Lab Digital Signal Processing Lab Fourier Transform in the Digital Domain We will compute a few points (samples) of X(f). We will choose a certain number of points that are representative of X(f). 1/2 X(f) f 1 2 3 N/2 - 1 N/2 k N-point DFT of x(n) N k f = The continuous digital frequency range is divided into N parts EL 6183 EL 6183 Digital Signal Processing Lab Digital Signal Processing Lab...
View Full Document

This note was uploaded on 11/18/2009 for the course EL EL6183 taught by Professor Selesnick during the Fall '09 term at NYU Poly.

Page1 / 18

EL 6183 Week 7 - Monday 03/23/09 EL 6183 / EE 4163 DIGITAL...

This preview shows document pages 1 - 8. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online