iir_80.h

// DD4WH LPF DC - 8.0 kHz
// (sampling rate 44.117 kHz)
// 19.11.2015
// Parameters generated using Iowa Hills IIR Filter Designer
// 8th order Inv Cheby Lowpass (4-stage cascaded biquad)
// 
// 

// coefficients must be in order: B0, B1, B2, A1, A0
// unlike output by Iowa Hils IIR Filter Designer !

const double IIR_80_Coeffs_0[] =
{
   0.446434382700681365,
   0.041146041523810628,
   0.446434382700681365 , 
   -0.085183554385348359,
   0.019198361310521727

};

const double IIR_80_Coeffs_1[] =
{   0.392327036556695707,
   0.163354017793623490,
   0.392327036556695707,
   -0.208051255444550665,
   0.156059346351565598


};

const double IIR_80_Coeffs_2[] =
{   0.323849872722823229,
   0.354465982397823676,
   0.323849872722823229,
   -0.401716599174288980,
   0.403882327017759224


};

const double IIR_80_Coeffs_3[] =
{   0.298069389947243191,
   0.554619294245409900,
   0.298069389947243191,
   -0.608875813894889872,
   0.759633888034786153
};