Use Nortons theorem to find in the circuit of Fig. 4.122.

Ch. 5 Sc. 5 - 7 Tuesday, March 1, 2016 11:45 AM Chapter 5 - FIR Filters Section 5 - Implementation of FIR filters - Three basic building blocks are needed to build FIR filters ○ Multiplier - The impulse response is simply ○ Adder ○ Unit delay - We use block diagram notation to graphically represent complexstructures - For example, here is a feed forward difference equation's implementation - This is also a third-order FIR filter ○ The standard structure is called direct form - Every implementationhas a transposed form, too Section 6 - Linear-Time Invariant (LTI)Systems - Discusses two general properties of systems:linearity and time invariance - We first li