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DIGITAL SIGNAL PROCESSING

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FIR Filter. Text books. DSP First: A multimedia approach. James H. McClellan ... Sampling & Aliasing. FIR Filter. Score. Home work 30 ??? 40. Test final 60 ??? 70 ... – PowerPoint PPT presentation

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Title: DIGITAL SIGNAL PROCESSING


1
DIGITAL SIGNAL PROCESSING
  • ?.????????? ????????

2
What is a Digital Signal Processing?
  • Entertainments
  • Digital Audio Video system such as TV, CD
    player, DVD Player etc.
  • Communications
  • Mobile telephone, Data optimize for
    computer networking (Data compression etc.)
  • Automatically operation
  • Assembly packing system, Robotics etc.

3
Some Example
4
DSP hierarchy
5
Contents
  • Introduction Complex number
    reminding
  • Sinusoids signal
  • Spectrum representation
  • Sampling Aliasing
  • FIR Filter

6
Text books
  • DSP First A multimedia approach
  • James H. McClellan
  • Fundamental of Digital Signal Processing
  • Hud
  • Fundamental of Digital Signal Processing
  • A. Lasakul

7
Files downloadhttp//www.kmitl.ac.th/dslabs
8
1D 2D Signal
Amplitude
x
1D signal (Audio signal)
9
1D 2D Signal
y
x
2D signal (Image signal)
10
1. Introduction
x(t)
xn
1D Analog Signal
1D Digital Signal
11
1.3 Thinking about system
xn
yn
x(t)
y(t)
DSP (Discrete-time system)
Output
Input
D/A Converter
A/D Converter
12
Discrete-time system
DSP (Discrete-time system)
xn
Yn
hn
hn
Yn xn
13
Yn xn xn
Yn
xn
14
????????????????????
Yn xn ?
  • ???????????????????? ? ???????????????????
    ??? yn ?????????????????????????????? ????
  • ????????????????????????????????????? (Low pass,
    High pass, Band pass)
  • ?????????????????? (Signal Generator)
  • ????????????????? (Signal Equalization)
  • ????????????????????????????????????????

15
Convolutions
Yn xn ?
16
Contents
  • Introduction Complex number
    reminding
  • Sinusoids signal
  • Spectrum representation
  • Sampling Aliasing
  • FIR Filter

17
Score
  • Home work 30 ??? 40
  • Test final 60 ??? 70
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