Realization of IIR Filters - Direct form

Q.  In direct form for realisation of IIR filters,

1) Denominator coefficients are the multipliers in the feed forward paths
2) Multipliers in the feedback paths are the positives of the denominator coefficients
3) Numerator coefficients are the multipliers in the feed forward paths
4) Multipliers in the feedback paths are the negatives of the denominator coefficients

- Published on 26 Nov 15

a. 1, 2 and 3 are correct
b. 1 and 2 are correct
c. 3 and 4 are correct
d. All the four are correct

ANSWER: 3 and 4 are correct

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