OBXDFilter.h File Reference

Namespaces
	sst
	Parent namespace for all Surge Synth Team code.
	sst::filters
	DSP code for Surge filters.
	sst::filters::OBXDFilter
	This namespace contains an adaptation of the filter from https://github.com/reales/OB-Xd/blob/master/Source/Engine/Filter.h.

Enumerations
enum	Poles { TWO_POLE , FOUR_POLE }
enum	Obxd12dBCoeff {   g12 , R12 , multimode , bandpass ,   self_osc_push , n_obxd12_coeff }
enum	Obxd24dBCoeff {   g24 , R24 , rcor24 , rcor24inv ,   pole_mix , pole_mix_inv_int , pole_mix_scaled , n_obxd24_coeff }
enum	Params { s1 , s2 , s3 , s4 }

Functions
template<typename TuningProvider >
void	makeCoefficients (FilterCoefficientMaker< TuningProvider > *cm, Poles p, float freq, float reso, int sub, float sampleRateInv, TuningProvider *provider)
SIMD_M128	diodePairResistanceApprox (SIMD_M128 x)
SIMD_M128	NewtonRaphson12dB (SIMD_M128 sample, QuadFilterUnitState *__restrict f)
SIMD_M128	process_2_pole (QuadFilterUnitState *__restrict f, SIMD_M128 sample)
SIMD_M128	NewtonRaphsonR24dB (SIMD_M128 sample, SIMD_M128 lpc, QuadFilterUnitState *__restrict f)
SIMD_M128	process_4_pole (QuadFilterUnitState *__restrict f, SIMD_M128 sample)

Variables
const auto	zero = SIMD_MM(set1_ps)(0.0f)
const auto	nine_two_zero = SIMD_MM(set1_ps)(0.00920833f)
const auto	zero_zero_five = SIMD_MM(set1_ps)(0.05f)
const auto	eight_seven_six = SIMD_MM(set1_ps)(0.0876f)
const auto	one_zero_three = SIMD_MM(set1_ps)(0.0103592f)
const auto	one_eight_five = SIMD_MM(set1_ps)(0.185f)
const auto	zero_four_five = SIMD_MM(set1_ps)(0.45f)
const auto	zero_five = SIMD_MM(set1_ps)(0.5f)
const auto	one = SIMD_MM(set1_ps)(1.0f)
const auto	one_three_five = SIMD_MM(set1_ps)(1.035f)
const auto	two = SIMD_MM(set1_ps)(2.0f)
const auto	three = SIMD_MM(set1_ps)(3.0f)
const auto	gainAdjustment2Pole = SIMD_MM(set1_ps)(0.74f)
const auto	gainAdjustment4Pole = SIMD_MM(set1_ps)(0.6f)