FilterCoefficientMaker< TuningProvider > Class Template Reference

Class for creating filter coefficients. More...

#include <FilterCoefficientMaker.h>

Public Member Functions
	FilterCoefficientMaker ()
	Default constructor.
void	setSampleRateAndBlockSize (float newSampleRate, int newBlockSize)
	Sets the sample rate and block size to use for processing the filters.
void	Reset ()
	Resets the coefficients to zero, and the tuning provider to nullptr.
void	FromDirect (const float(&N)[n_cm_coeffs])
	Creates filter coefficients directly from an array.
void	MakeCoeffs (float Freq, float Reso, FilterType Type, FilterSubType SubType, TuningProvider *provider, bool tuningAdjusted, float extra=0.f, float extra2=0.f, float extra3=0.f)
	Creates filter coefficients for a given set of filter parameters.
template<typename StateType >
void	updateState (StateType &state, int channel=-1)
	Update the coefficients in a filter state.
template<typename StateType >
void	updateCoefficients (StateType &state, int channel=0)
	Update the local coefficients with the coefficients from the filter state.

Static Public Member Functions
static float	provider_note_to_pitch (TuningProvider *provider, float note)
static float	provider_note_to_pitch_ignoring_tuning (TuningProvider *provider, float note)
static float	provider_note_to_pitch_inv_ignoring_tuning (TuningProvider *provider, float note)
static void	provider_note_to_omega_ignoring_tuning (TuningProvider *provider, float x, float &sinu, float &cosi, float sampleRate)

Public Attributes
float	C [n_cm_coeffs] {}
	Current filter coefficients.
float	dC [n_cm_coeffs] {}
	Filter coefficients "delta" to update current coefficients.
float	tC [n_cm_coeffs] {}
	"Target" filter coefficients
float	fromDirectLast [n_cm_coeffs] {}
	Last 'N' value used in fromdirect You would think this would be target (and ultimately it is) but the original usage calculated and applied these over and over and target was and still is the low pass filtered value.

Detailed Description

template<typename TuningProvider = detail::BasicTuningProvider>
class sst::filters::FilterCoefficientMaker< TuningProvider >

Class for creating filter coefficients.

Template Parameters

TuningProvider

A 12-TET tuning provider is used by default, but if you would like to support other tunings, you should use a custom tuning provider.

Constructor & Destructor Documentation

FilterCoefficientMaker()

template<typename TuningProvider >

FilterCoefficientMaker

(

)

Default constructor.

Member Function Documentation

setSampleRateAndBlockSize()

template<typename TuningProvider >

void setSampleRateAndBlockSize	(	float	newSampleRate,
		int	newBlockSize
	)

Sets the sample rate and block size to use for processing the filters.

Reset()

template<typename TuningProvider >

void Reset

(

)

Resets the coefficients to zero, and the tuning provider to nullptr.

References sst::filters::n_cm_coeffs.

FromDirect()

template<typename TuningProvider >

void FromDirect

(

const float(&)

N[n_cm_coeffs]

)

Creates filter coefficients directly from an array.

References N, sst::filters::n_cm_coeffs, and sst::filters::smooth.

Referenced by sst::filters::cytomic_quadform::makeCoefficients(), sst::filters::K35Filter::makeCoefficients(), sst::filters::VintageLadder::RK::makeCoefficients(), sst::filters::VintageLadder::Huov::makeCoefficients(), sst::filters::VintageLadder::Huov2010::makeCoefficients(), sst::filters::DiodeLadderFilter::makeCoefficients(), sst::filters::ResonanceWarp::makeCoefficients(), sst::filters::CutoffWarp::makeCoefficients(), sst::filters::TriPoleFilter::makeCoefficients(), and sst::filters::OBXDFilter::makeCoefficients().

MakeCoeffs()

template<typename TuningProvider >

void MakeCoeffs	(	float	Freq,
		float	Reso,
		FilterType	Type,
		FilterSubType	SubType,
		TuningProvider *	provider,
		bool	tuningAdjusted,
		float	extra = 0.f,
		float	extra2 = 0.f,
		float	extra3 = 0.f
	)

Creates filter coefficients for a given set of filter parameters.

Note that frequency is expected in units of MIDI note number, with A440 = 0.

References sst::filters::OBXDFilter::FOUR_POLE, sst::filters::fut_apf, sst::filters::fut_bp12, sst::filters::fut_bp24, sst::filters::fut_comb_neg, sst::filters::fut_comb_pos, sst::filters::fut_cutoffwarp_ap, sst::filters::fut_cutoffwarp_bp, sst::filters::fut_cutoffwarp_hp, sst::filters::fut_cutoffwarp_lp, sst::filters::fut_cutoffwarp_n, sst::filters::fut_cytomic_svf, sst::filters::fut_diode, sst::filters::fut_hp12, sst::filters::fut_hp24, sst::filters::fut_k35_hp, sst::filters::fut_k35_lp, sst::filters::fut_k35_saturations, sst::filters::fut_lp12, sst::filters::fut_lp24, sst::filters::fut_lpmoog, sst::filters::fut_none, sst::filters::fut_notch12, sst::filters::fut_notch24, sst::filters::fut_obxd_2pole_bp, sst::filters::fut_obxd_2pole_hp, sst::filters::fut_obxd_2pole_lp, sst::filters::fut_obxd_2pole_n, sst::filters::fut_obxd_4pole, sst::filters::fut_obxd_xpander, sst::filters::fut_resonancewarp_ap, sst::filters::fut_resonancewarp_bp, sst::filters::fut_resonancewarp_hp, sst::filters::fut_resonancewarp_lp, sst::filters::fut_resonancewarp_n, sst::filters::fut_SNH, sst::filters::fut_tripole, sst::filters::fut_vintageladder, sst::filters::cytomic_quadform::makeCoefficients(), sst::filters::K35Filter::makeCoefficients(), sst::filters::VintageLadder::RK::makeCoefficients(), sst::filters::VintageLadder::Huov::makeCoefficients(), sst::filters::VintageLadder::Huov2010::makeCoefficients(), sst::filters::DiodeLadderFilter::makeCoefficients(), sst::filters::ResonanceWarp::makeCoefficients(), sst::filters::CutoffWarp::makeCoefficients(), sst::filters::TriPoleFilter::makeCoefficients(), sst::filters::OBXDFilter::makeCoefficients(), sst::filters::num_filter_types, sst::filters::st_bp12_LegacyClean, sst::filters::st_bp12_LegacyDriven, sst::filters::st_Clean, sst::filters::st_Driven, sst::filters::st_k35_continuous, sst::filters::st_k35_extreme, sst::filters::st_obxd4pole_broken24dB, sst::filters::st_obxd4pole_morph, sst::filters::st_Standard, sst::filters::st_vintage_type1, sst::filters::st_vintage_type1_compensated, sst::filters::st_vintage_type2, sst::filters::st_vintage_type2_compensated, sst::filters::st_vintage_type3, sst::filters::st_vintage_type3_compensated, sst::filters::OBXDFilter::TWO_POLE, and sst::filters::OBXDFilter::XPANDER.

updateState()

template<typename TuningProvider >

template<typename StateType >

void updateState	(	StateType &	state,
		int	channel = -1
	)

Update the coefficients in a filter state.

To update the coefficients for a single channel, pass a channel index to the channel argument, otherwise the same coefficients will be used for all channels.

References sst::filters::n_cm_coeffs, and sst::filters::detail::set1f().

updateCoefficients()

template<typename TuningProvider >

template<typename StateType >

void updateCoefficients	(	StateType &	state,
		int	channel = 0
	)

Update the local coefficients with the coefficients from the filter state.

This is necessary since the filter state is responsible for smoothing the filter coefficients.

References sst::filters::detail::get1f(), and sst::filters::n_cm_coeffs.

provider_note_to_pitch()

template<typename TuningProvider >

float provider_note_to_pitch ( TuningProvider *  provider, float  note  )

static

provider_note_to_pitch_ignoring_tuning()

template<typename TuningProvider >

float provider_note_to_pitch_ignoring_tuning ( TuningProvider *  provider, float  note  )

static

Referenced by sst::filters::VintageLadder::Common::clampedFrequency(), and sst::filters::cytomic_quadform::makeCoefficients().

provider_note_to_pitch_inv_ignoring_tuning()

template<typename TuningProvider >

float provider_note_to_pitch_inv_ignoring_tuning ( TuningProvider *  provider, float  note  )

static

provider_note_to_omega_ignoring_tuning()

template<typename TuningProvider >

void provider_note_to_omega_ignoring_tuning ( TuningProvider *  provider, float  x, float &  sinu, float &  cosi, float  sampleRate  )

static

Member Data Documentation

C

template<typename TuningProvider = detail::BasicTuningProvider>

float C[n_cm_coeffs] {}

Current filter coefficients.

dC

template<typename TuningProvider = detail::BasicTuningProvider>

float dC[n_cm_coeffs] {}

Filter coefficients "delta" to update current coefficients.

tC

template<typename TuningProvider = detail::BasicTuningProvider>

float tC[n_cm_coeffs] {}

"Target" filter coefficients

fromDirectLast

template<typename TuningProvider = detail::BasicTuningProvider>

float fromDirectLast[n_cm_coeffs] {}

Last 'N' value used in fromdirect You would think this would be target (and ultimately it is) but the original usage calculated and applied these over and over and target was and still is the low pass filtered value.

So this is that value and if you know that the register calculation is unchanged you can just apply it again in FromDirect (like Filters++::freezeCoefficients does)

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The documentation for this class was generated from the following files:

• FilterCoefficientMaker.h
• FilterCoefficientMaker_Impl.h