Signals & Systems
1
,Introduction
Signal: Variation of physical phenomena/quantity with respect to
some independent variable carrying information or message.
Examples
◦ The variation of Sun light, temperature throughout day V(t)
◦ Heat, force, displacement, light signal, acoustic, image, video,
◦ Temperature, Blood Pressure, Heart beats, ECG, EEG, etc.
t
2
,Introduction-Signal
Fig: ECG Signal
3
, Introduction-Signal
Fig: Variation of Shares Return
4
1
,Introduction
Signal: Variation of physical phenomena/quantity with respect to
some independent variable carrying information or message.
Examples
◦ The variation of Sun light, temperature throughout day V(t)
◦ Heat, force, displacement, light signal, acoustic, image, video,
◦ Temperature, Blood Pressure, Heart beats, ECG, EEG, etc.
t
2
,Introduction-Signal
Fig: ECG Signal
3
, Introduction-Signal
Fig: Variation of Shares Return
4
