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• Fourier Transform
It has
been proved by
a technique called
FOURIER TRANSFORM
that any
Aperiodic signal can
be decomposed into
an infinite number
of
Periodic Signals
™ ANALOG SIGNALS
o Analog signals can be classified as
Simple or Composite
o Simple Analog Signal(Sine Wave)
-Cannot be
decomposed into simpler signal
o Composite Analog Signal
-Composed of
multiple sine waves
™ Sine Waves
o Sine Waves are the most fundamental form
of Periodic Analog Signals
o The curve oscillates over the course of a
cycle smoothly and consistently
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o Each cycle consists of a single arc above
the time axis followed by a single arc
below
it
o Sine Waves can be fully described by
three characteristics:
Amplitude
Period/Frequency
Phase
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