1!IIR
2!   TSP Lab
3!   Electrical & Computer Engineering
4!   McGill University
5! File: STL_LPx3_IIR.cof
6! See ITU-T G.191 (2000), Software Tools Library (module iir_flat.c)
7! $Id: STL_LPx3_IIR.cof 1.4 2002/06/18 AFsp-v8r2 $
8!
9! IIR flat response filter for 1:3 or 3:1 resampling.  This filter can be
10! used to convert between 48 kHz sampling and 16 kHz sampling.
11! Each line gives the 5 coefficients for a second-order section
12!             h(i,0)*z^2 + h(i,1)*z + h(i,2)
13!    H(i,z) = ------------------------------
14!                z^2 + h(i,3)*z + h(i,4)
15!  - 7th order elliptic filter (equi-ripple)
16!  - Passband: unity gain, 0 - 7010 Hz (48 kHz sampling), ripple +0 / -0.1 dB
17!  - Stopband: 7610 - 24000 Hz (48 kHz sampling), min. attenuation 97.6 dB
18!  - For interpolation, apply an additional gain factor of 3
19  2.5520133e-004  2.5520133e-004  0.0000000e+000 -7.4139393e-001  0.0000000e+000
20  1.0000000e+000  8.5931258e-001  1.0000000e+000 -1.4463527e+000  5.9986938e-001
21  1.0000000e+000 -2.6100419e-001  1.0000000e+000 -1.3653687e+000  7.1199842e-001
22  1.0000000e+000 -7.4898158e-001  1.0000000e+000 -1.2868815e+000  8.2250087e-001
23  1.0000000e+000 -9.5697448e-001  1.0000000e+000 -1.2334203e+000  9.0217520e-001
24  1.0000000e+000 -1.0480535e+000  1.0000000e+000 -1.2060405e+000  9.5276796e-001
25  1.0000000e+000 -1.0831175e+000  1.0000000e+000 -1.2007704e+000  9.8602848e-001
26