Structure used for the state variable filter parameters. More...

#include <juce_StateVariableFilter.h>

Collaboration diagram for juce::dsp::StateVariableFilter::Parameters< NumericType >:

Public Types
using	Ptr = ReferenceCountedObjectPtr< Parameters >
	The Coefficients structure is ref-counted, so this is a handy type that can be used as a pointer to one. More...

using	Type = StateVariableFilterType

Public Member Functions
	Parameters ()=default

	Parameters (const Parameters &o)

Parameters &	operator= (const Parameters &o) noexcept

void	setCutOffFrequency (double sampleRate, NumericType frequency, NumericType resonance=static_cast< NumericType >(1.0/MathConstants< double >::sqrt2)) noexcept
	Sets the cutoff frequency and resonance of the IIR filter. More...

Public Attributes
NumericType	g = static_cast<NumericType> (std::tan (MathConstants<double>::pi * 200.0 / 44100.0))

NumericType	h = static_cast<NumericType> (1.0 / (1.0 + R2 * g + g * g))

NumericType	R2 = static_cast<NumericType> (MathConstants<double>::sqrt2)

Type	type = Type::lowPass
	The type of the IIR filter. More...

Detailed Description

template<typename NumericType>
struct juce::dsp::StateVariableFilter::Parameters< NumericType >

Structure used for the state variable filter parameters.

@tags{DSP}

Member Typedef Documentation

◆ Ptr

template<typename NumericType >

using juce::dsp::StateVariableFilter::Parameters< NumericType >::Ptr = ReferenceCountedObjectPtr<Parameters>

The Coefficients structure is ref-counted, so this is a handy type that can be used as a pointer to one.

◆ Type

template<typename NumericType >

using juce::dsp::StateVariableFilter::Parameters< NumericType >::Type = StateVariableFilterType

Constructor & Destructor Documentation

◆ Parameters() [1/2]

template<typename NumericType >

juce::dsp::StateVariableFilter::Parameters< NumericType >::Parameters ( )

default

◆ Parameters() [2/2]

template<typename NumericType >

juce::dsp::StateVariableFilter::Parameters< NumericType >::Parameters ( const Parameters< NumericType > & o )

inline

Member Function Documentation

◆ operator=()

template<typename NumericType >

Parameters& juce::dsp::StateVariableFilter::Parameters< NumericType >::operator= ( const Parameters< NumericType > & o )

inlinenoexcept

References juce::dsp::StateVariableFilter::Parameters< NumericType >::g, juce::dsp::StateVariableFilter::Parameters< NumericType >::h, and juce::dsp::StateVariableFilter::Parameters< NumericType >::R2.

◆ setCutOffFrequency()

template<typename NumericType >

void juce::dsp::StateVariableFilter::Parameters< NumericType >::setCutOffFrequency	(	double	sampleRate,
		NumericType	frequency,
		NumericType	resonance = `static_cast<NumericType> (1.0 / MathConstants<double>::sqrt2)`
	)

inlinenoexcept

Sets the cutoff frequency and resonance of the IIR filter.

Note: The bandwidth of the resonance increases with the value of the parameter. To have a standard 12 dB/octave filter, the value must be set at 1 / sqrt(2).

References juce::dsp::StateVariableFilter::Parameters< NumericType >::g, juce::dsp::StateVariableFilter::Parameters< NumericType >::h, jassert, juce::dsp::StateVariableFilter::Parameters< NumericType >::R2, and juce::Colours::tan.

Member Data Documentation

◆ g

template<typename NumericType >

NumericType juce::dsp::StateVariableFilter::Parameters< NumericType >::g = static_cast<NumericType> (std::tan (MathConstants<double>::pi * 200.0 / 44100.0))

Referenced by juce::dsp::StateVariableFilter::Parameters< NumericType >::operator=(), and juce::dsp::StateVariableFilter::Parameters< NumericType >::setCutOffFrequency().