1!IIR 2! TSP Lab 3! Electrical & Computer Engineering 4! McGill University 5! File: STL_dc_IIR_8k.cof 6! See ITU-T G.191 (2000), Software Tools Library (module iir_dir.c) 7! $Id: STL_dc_IIR_8k.cof 1.3 2002/06/18 AFsp-v8r2 $ 8! 9! dc removal filter 10! h(0)*z^2 + h(1)*z + h(2) 11! H(z) = ------------------------ 12! z^2 + h(3)*z + h(4) 13! - 1 second-order section (really first order since h(2) = h(4) = 0) 14! - The response is monotonic. For 8 kHz sampling 15! -3 dB at 18 Hz 16! -1 dB at 36 Hz 17! 0 dB at 156 Hz 18! 0.6 dB at 4000 Hz 19 1 -1 0 -0.985 0 20