1.4 The unit impulse and unit step function 1.4.1 The discrete-time unit impulse and unit step sequence1 Unit impulse:Throughout the book,we refer interchangeably as the unit impulse or unit sample.2 Unit step:un3 Relationship between the discrete-time unit impulse and unit step(1)The unit impulse is the first difference of the step:(2)The unit step is the running sum of the impulse:By changing the variable of summation from m to k=n-m(a)n0(a)n04 The sampling property of unit impulse:Unit impuls
