B-30 DSP96002 USER’S MANUAL MOTOROLA

B.1.18 All Pole IIR Lattice Filter

ALL POLE IIR LATTICE FILTER
A(in) A(out)
k2 k1
-k -k2 -k1
S3 S2 S1
Coefficient And State Variable Storage
R0 R4
x: k1 k2 k3 y: s3 s2 s1
M0=2 (mod 3) M4=2 (mod 3)
SINGLE SECTION
EQUATIONS:
t t’
k t’=t-k*s
s’=s+k*t’
t’t
-k
S’ S
Z-1 Z-1 Z-1
Z-1