SIGNALS AND SYSTEM
INTRODUCTION
A SIGNAL is defined as any physical
quantity that changes with time, distance, speed, position, pressure,
temperature or some other quantity. A SIGNAL
is physical quantity that consists of many sinusoidal of different amplitudes
and frequencies.
Ex
x(t) =
10t
X(t) = 5x2+20xy+30y
A System is a physical device that
performs an operations or processing on a signal. Ex Filter or Amplifier.
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