What is DSP ?

Digital Signal Processing is used in wide variety of applications .

Digital : Operating by the use of discrete signals to represent data in the form of digits.

Signal : A variable parameter by which information is conveyed through an electronic circuit.

Processing : To perform operations on data according to need or instruction.

Hence,

Digital Signal Processing can be defined as :

"Changing or analysing information to a discrete sequences of numbers."

Two unique features that differentiates DSP from ordinary Digital Processing :

a) Signals from the real world.

b) Signals are discrete.