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JUCE
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Structure used for the state variable filter parameters. More...
#include <juce_StateVariableFilter.h>
Public Types | |
| using | Type = StateVariableFilterType |
| 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. | |
Public Types inherited from juce::dsp::ProcessorState | |
| using | Ptr = ReferenceCountedObjectPtr<ProcessorState> |
| The ProcessorState structure is ref-counted, so this is a handy type that can be used as a pointer to one. | |
Public Member Functions | |
| 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. | |
| Parameters ()=default | |
| Parameters (const Parameters &o) | |
| Parameters & | operator= (const Parameters &o) noexcept |
Public Member Functions inherited from ReferenceCountedObject | |
| void | incReferenceCount () noexcept |
| Increments the object's reference count. | |
| void | decReferenceCount () noexcept |
| Decreases the object's reference count. | |
| bool | decReferenceCountWithoutDeleting () noexcept |
| Decreases the object's reference count. | |
| int | getReferenceCount () const noexcept |
| Returns the object's current reference count. | |
Public Attributes | |
| Type | type = Type::lowPass |
| The type of the IIR filter. | |
| NumericType | g = static_cast<NumericType> (std::tan (MathConstants<double>::pi * 200.0 / 44100.0)) |
| NumericType | R2 = static_cast<NumericType> (MathConstants<double>::sqrt2) |
| NumericType | h = static_cast<NumericType> (1.0 / (1.0 + R2 * g + g * g)) |
Additional Inherited Members | |
Protected Member Functions inherited from ReferenceCountedObject | |
| ReferenceCountedObject ()=default | |
| Creates the reference-counted object (with an initial ref count of zero). | |
| ReferenceCountedObject (const ReferenceCountedObject &) noexcept | |
| Copying from another object does not affect this one's reference-count. | |
| ReferenceCountedObject (ReferenceCountedObject &&) noexcept | |
| Copying from another object does not affect this one's reference-count. | |
| ReferenceCountedObject & | operator= (const ReferenceCountedObject &) noexcept |
| Copying from another object does not affect this one's reference-count. | |
| ReferenceCountedObject & | operator= (ReferenceCountedObject &&) noexcept |
| Copying from another object does not affect this one's reference-count. | |
| virtual | ~ReferenceCountedObject () |
| Destructor. | |
| void | resetReferenceCount () noexcept |
| Resets the reference count to zero without deleting the object. | |
Structure used for the state variable filter parameters.
| using juce::dsp::StateVariableFilter::Parameters< NumericType >::Type = StateVariableFilterType |
| 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.
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default |
| juce::dsp::StateVariableFilter::Parameters< NumericType >::Parameters | ( | const Parameters< NumericType > & | o | ) |
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noexcept |
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, and juce::dsp::StateVariableFilter::Parameters< NumericType >::R2.
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noexcept |
| Type juce::dsp::StateVariableFilter::Parameters< NumericType >::type = Type::lowPass |
The type of the IIR filter.
| NumericType juce::dsp::StateVariableFilter::Parameters< NumericType >::g = static_cast<NumericType> (std::tan (MathConstants<double>::pi * 200.0 / 44100.0)) |
| NumericType juce::dsp::StateVariableFilter::Parameters< NumericType >::R2 = static_cast<NumericType> (MathConstants<double>::sqrt2) |
| NumericType juce::dsp::StateVariableFilter::Parameters< NumericType >::h = static_cast<NumericType> (1.0 / (1.0 + R2 * g + g * g)) |