Download presentation
Presentation is loading. Please wait.
1
A-A+ B-B+ C-C+ F
2
Week 11. Chapter 10 Fourier Transforms 1.The Four Fourier transforms CTFT DTFT FS DFT/S 2.Relationships 3.Important properties
3
1.The Four Fourier transforms The signal spaces The transform definitions 2.Relationships 3.Important properties
4
The 4 Signal Spaces CTFT is defined for ContSignals DTFT is defined for DiscSignals FS is defined for ContPeriodic p DFT (DFS) defined for DiscPeriodic p
5
CTFT
6
CTFT Intuition
7
Properties 1 Sinusoids
8
Example FS & FT of periodic signals
9
Properties 2 Time change
10
Example
11
Properties 3 Symmetry
12
Properties 4 More symmetry
13
Example
15
Properties 5 Duality
16
Example
18
Properties 6 Convolution
20
Properties 7Delay
21
Properties 8Modulation
22
Discrete-time Fourier Transform (DTFT)
23
Example Rectangle
24
Example Upsampling
25
Fourier series 012 1
26
Discrete Fourier Transform (DFT) 07 1
27
Fourier series and DTFT
28
SummaryDefinitions CTFT InvCTFT DTFT InvDTFT
29
FS InvFS DFT InvDFT
30
Properties for CTFT Linearity Symmetry Duality Convolution Time-scale Multiplication Modulation Delay
31
Properties for DTFT Periodic Convolution Multiplication Delay Modulation Upsampling
32
Important signals Delta Complex exponentials, sinusoids Rectangular pulse, sinc Exponentials
Similar presentations
© 2024 SlidePlayer.com. Inc.
All rights reserved.