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Signals And Systems Presentation Transcript:
1.EEE223 Signals & Systems
2.Outline
DT unit sample and unit step sequences
CT unit impulse and unit step functions
3.DT Unit sample (impulse)
d[n] = 1 for n = 0
0 for n ? 0
Sampling property of unit sample:
x[n] d[n] = x[0] d[n]
x[n] d[n-k] = x[k] d[n-k]
4.What happens when a signal is multiplied with a unit step sequence?
5.Relationship between unit sample and unit step
6.CT Unit Step
What happens when we multiply a signal with a unit step?
What about multiplying with a box?
7.A signal with infinite height, zero width, unit area
The limiting form of an infinite number of functions
Derivative of unit step???
Definition as an integral??
8.Scaled impulses
Sampling property:
Unit step as integral of unit impulse
Source: Power Point Presentations
