sst::filters::OBXDFilter Namespace Reference

This namespace contains an adaptation of the filter from https://github.com/reales/OB-Xd/blob/master/Source/Engine/Filter.h. More...

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)
__m128	diodePairResistanceApprox (__m128 x)
__m128	NewtonRaphson12dB (__m128 sample, QuadFilterUnitState *__restrict f)
__m128	process_2_pole (QuadFilterUnitState *__restrict f, __m128 sample)
__m128	NewtonRaphsonR24dB (__m128 sample, __m128 lpc, QuadFilterUnitState *__restrict f)
__m128	process_4_pole (QuadFilterUnitState *__restrict f, __m128 sample)

Variables
const __m128	zero = _mm_set1_ps(0.0f)
const __m128	nine_two_zero = _mm_set1_ps(0.00920833f)
const __m128	zero_zero_five = _mm_set1_ps(0.05f)
const __m128	eight_seven_six = _mm_set1_ps(0.0876f)
const __m128	one_zero_three = _mm_set1_ps(0.0103592f)
const __m128	one_eight_five = _mm_set1_ps(0.185f)
const __m128	zero_four_five = _mm_set1_ps(0.45f)
const __m128	zero_five = _mm_set1_ps(0.5f)
const __m128	one = _mm_set1_ps(1.0f)
const __m128	one_three_five = _mm_set1_ps(1.035f)
const __m128	two = _mm_set1_ps(2.0f)
const __m128	three = _mm_set1_ps(3.0f)
const __m128	gainAdjustment2Pole = _mm_set1_ps(0.74f)
const __m128	gainAdjustment4Pole = _mm_set1_ps(0.6f)

Detailed Description

This namespace contains an adaptation of the filter from https://github.com/reales/OB-Xd/blob/master/Source/Engine/Filter.h.

Enumeration Type Documentation

Poles

enum Poles

Enumerator
TWO_POLE
FOUR_POLE

Obxd12dBCoeff

enum Obxd12dBCoeff

Enumerator
g12
R12
multimode
bandpass
self_osc_push
n_obxd12_coeff

Obxd24dBCoeff

enum Obxd24dBCoeff

Enumerator
g24
R24
rcor24
rcor24inv
pole_mix
pole_mix_inv_int
pole_mix_scaled
n_obxd24_coeff

Params

enum Params

Enumerator
s1
s2
s3
s4

Function Documentation

makeCoefficients()

void sst::filters::OBXDFilter::makeCoefficients	(	FilterCoefficientMaker< TuningProvider > *	cm,
		Poles	p,
		float	freq,
		float	reso,
		int	sub,
		float	sampleRateInv,
		TuningProvider *	provider
	)

References bandpass, FilterCoefficientMaker< TuningProvider >::FromDirect(), g12, g24, multimode, sst::filters::n_cm_coeffs, pole_mix, pole_mix_inv_int, pole_mix_scaled, R12, R24, rcor24, rcor24inv, self_osc_push, and TWO_POLE.

Referenced by FilterCoefficientMaker< TuningProvider >::MakeCoeffs().

diodePairResistanceApprox()

__m128 sst::filters::OBXDFilter::diodePairResistanceApprox

(

__m128

x

)

References nine_two_zero, one, one_eight_five, one_zero_three, and zero_zero_five.

Referenced by NewtonRaphson12dB().

NewtonRaphson12dB()

__m128 sst::filters::OBXDFilter::NewtonRaphson12dB	(	__m128	sample,
		QuadFilterUnitState *__restrict	f
	)

References diodePairResistanceApprox(), eight_seven_six, g12, one, one_three_five, R12, s1, s2, self_osc_push, and two.

Referenced by process_2_pole().

process_2_pole()

__m128 sst::filters::OBXDFilter::process_2_pole	(	QuadFilterUnitState *__restrict	f,
		__m128	sample
	)

References bandpass, g12, gainAdjustment2Pole, multimode, n_obxd12_coeff, NewtonRaphson12dB(), one, s1, s2, zero, and zero_five.

Referenced by sst::filters::GetQFPtrFilterUnit().

NewtonRaphsonR24dB()

__m128 sst::filters::OBXDFilter::NewtonRaphsonR24dB	(	__m128	sample,
		__m128	lpc,
		QuadFilterUnitState *__restrict	f
	)

References g24, one, R24, S, s1, s2, s3, and s4.

Referenced by process_4_pole().

process_4_pole()

__m128 sst::filters::OBXDFilter::process_4_pole	(	QuadFilterUnitState *__restrict	f,
		__m128	sample
	)

References g24, gainAdjustment4Pole, n_obxd24_coeff, NewtonRaphsonR24dB(), one, pole_mix_inv_int, pole_mix_scaled, R24, rcor24, rcor24inv, s1, s2, s3, s4, three, two, zero, and zero_four_five.

Referenced by sst::filters::GetQFPtrFilterUnit().

Variable Documentation

zero

const __m128 zero = _mm_set1_ps(0.0f)

Referenced by sst::filters::DiodeLadderFilter::process(), process_2_pole(), and process_4_pole().

nine_two_zero

const __m128 nine_two_zero = _mm_set1_ps(0.00920833f)

Referenced by diodePairResistanceApprox().

zero_zero_five

const __m128 zero_zero_five = _mm_set1_ps(0.05f)

Referenced by diodePairResistanceApprox().

eight_seven_six

const __m128 eight_seven_six = _mm_set1_ps(0.0876f)

Referenced by NewtonRaphson12dB().

one_zero_three

const __m128 one_zero_three = _mm_set1_ps(0.0103592f)

Referenced by diodePairResistanceApprox().

one_eight_five

const __m128 one_eight_five = _mm_set1_ps(0.185f)

Referenced by diodePairResistanceApprox().

zero_four_five

const __m128 zero_four_five = _mm_set1_ps(0.45f)

Referenced by process_4_pole().

zero_five

const __m128 zero_five = _mm_set1_ps(0.5f)

Referenced by process_2_pole().

one

const __m128 one = _mm_set1_ps(1.0f)

Referenced by sst::filters::VintageLadder::RK::clip(), diodePairResistanceApprox(), NewtonRaphson12dB(), NewtonRaphsonR24dB(), sst::filters::DiodeLadderFilter::process(), sst::filters::VintageLadder::Huov::process(), process_2_pole(), process_4_pole(), sst::filters::utilities::tanh7_ps(), and sst::filters::utilities::tanh7_ss().

one_three_five

const __m128 one_three_five = _mm_set1_ps(1.035f)

Referenced by NewtonRaphson12dB().

two

const __m128 two = _mm_set1_ps(2.0f)

Referenced by NewtonRaphson12dB(), sst::filters::VintageLadder::RK::process(), and process_4_pole().

three

const __m128 three = _mm_set1_ps(3.0f)

Referenced by process_4_pole().

gainAdjustment2Pole

const __m128 gainAdjustment2Pole = _mm_set1_ps(0.74f)

Referenced by process_2_pole().

gainAdjustment4Pole

const __m128 gainAdjustment4Pole = _mm_set1_ps(0.6f)

Referenced by process_4_pole().