Feb 1st

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Feb 1st
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Basics of Signal Processing
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ACTION
describe waves in terms of their significant
features
understand the way the waves originate
effect of the waves
will the people in the boat notice ?
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frequency 1/T

• sine wave
• period (frequency)
• amplitude
• phase

l speed of sound T, where T is a period
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Sinusoidal grating of image
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TO

• Fourier idea
• describe the signal by a sum of other well
  defined signals

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Fourier Series
A periodic function as an infinite weighted sum
of simpler periodic functions!
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A good simple function
TiT0 / i
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Orthogonality
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x
area is positive (T/2)
area is zero