K 6 g 8 n 1 g 8 n k 5 f 7 n g 7 n 1 f 7 n f 8 n k 5 g

ECE 513 - Homework 7 Solution 7
(a) Write a Matlab function to implement a second order section IIR lattice filter.

(b) The Matlab routine sampdata has been provided in the course website. Use the
sequence generated by this routine as input for the filter simulations in this prob-
lem.
(c) Write a Matlab routine to simulate the second order section implementation of
H ( z ) using second order IIR lattice sections and your function from part a. Since
the order of the filter is 6, your implementation should have 3 second order sections
and you should call your routine 3 times to implement the cascaded filter.

ECE 513 - Homework 7 Solution 9
(d) Use the Matlab routine latc2tf to obtain the transfer function equivalent for each
of the second order sections. Then write a Matlab routine to call the Matlab
routine filter three times in cascade to filter the input sequence.