iir_26.h

// DD4WH LPF DC - 2.6 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_26_Coeffs_0[] =
{   0.540171118036528397,
   -0.919885858364284048,
   0.540171118036528397,
   -1.216564577638121310,
   0.377020955346894171
  
};

const double IIR_26_Coeffs_1[] =
{   0.365427800890789467,
   -0.584085107562330563,
   0.365427800890789467,
   -1.370139944133233590,
   0.516910438352482071

};

const double IIR_26_Coeffs_2[] =
{   0.166507245228244061,
   -0.199806854365357778,
   0.166507245228244061,
   -1.573830827104126360,
   0.707038463195256650

};

const double IIR_26_Coeffs_3[] =
{   0.048669380653841535,
   0.033035018012432818,
   0.048669380653841535,
   -1.768940357874658530,
   0.899314137194774377

};