What is Impulse Response ?

• Impulse Response of a system is the result that is presented with a brief input signals.

• Linear, Time-Invariant Systems are characterized by the response of their impulses.

• It is easy to analyze the systems that implements transfer functions.
  This is done by Laplace transform of the impulse response function.

• The output of the system can be determined in time domain by convolution of the input function with the impulse response function.

• The response of impulse and the response of Kronecker delta input are finite, as it settles zero in a finite number of interval samples.

• This process is done by Finite Impulse Response filter.