This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
Unformatted text preview: EE 2200 / Spring 2010: Section FOUR 1 ECE 2200 / Spring 2010 SECTION Four (Week 5: Feb 2225) 1. The impulse response h [ n ] of an FIR filter is h [ n ] = δ [ n 1] 3 δ [ n 3] + 0 . 1 δ [ n 4] + 0 . 04 δ [ n 7] Write the difference equation for the FIR filter. 2. Consider the unit step signal u [ n ] = ( 0 for n < 1 for n ≥ (i) With u [ n ] as the input, compute and sketch the output y [ n ] for n = 10 to n = 10 of the fourterm running average filter with difference equation y [ n ] = 1 4 3 X k =0 x [ n k ] (ii) Confirm your answer to part (i) using Matlab. (iii) Derive a general formula for y [ n ] as the output of an Lterm averager with difference equation y [ n ] = 1 L L 1 X k =0 x [ n k ] and a unit step signal u [ n ] as the input. 3. A linear timeinvariant system with input x [ n ] and output y [ n ] is described by the difference equation y [ n ] = 3 . 4 x [ n ] 5 . 2 x [ n 1] + 3 . 4 x [ n 2] (i) Determine the unit impulse response of this system....
View
Full Document
 Spring '05
 JOHNSON
 Digital Signal Processing, LTI system theory, Impulse response, difference equation, Feedforward System

Click to edit the document details