OpenShot Library | OpenShotAudio
0.2.1
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An IIR filter that can perform low, band and high-pass filtering on an audio signal, with 12 dB of attenuation / octave, using a TPT structure, designed for fast modulation (see Vadim Zavalishin's documentation about TPT structures for more information). More...
#include <juce_StateVariableFilter.h>
Public Types | |
using | NumericType = typename SampleTypeHelpers::ElementType< SampleType >::Type |
The NumericType is the underlying primitive type used by the SampleType (which could be either a primitive or vector) | |
using | ParametersPtr = typename Parameters< NumericType >::Ptr |
A typedef for a ref-counted pointer to the coefficients object. | |
Public Member Functions | |
Filter () | |
Creates a filter with default parameters. More... | |
Filter (ParametersPtr parametersToUse) | |
Filter (const Filter &)=default | |
Creates a copy of another filter. More... | |
Filter (Filter &&)=default | |
Move constructor. | |
void | prepare (const ProcessSpec &) noexcept |
Initialization of the filter. | |
void | reset () noexcept |
Resets the filter's processing pipeline. More... | |
void | snapToZero () noexcept |
Ensure that the state variables are rounded to zero if the state variables are denormals. More... | |
template<typename ProcessContext > | |
void | process (const ProcessContext &context) noexcept |
SampleType JUCE_VECTOR_CALLTYPE | processSample (SampleType sample) noexcept |
Processes a single sample, without any locking or checking. More... | |
Public Attributes | |
Parameters< NumericType >::Ptr | parameters |
The parameters of the state variable filter. More... | |
An IIR filter that can perform low, band and high-pass filtering on an audio signal, with 12 dB of attenuation / octave, using a TPT structure, designed for fast modulation (see Vadim Zavalishin's documentation about TPT structures for more information).
Its behaviour is based on the analog state variable filter circuit.
Note: The bandpass here is not the one in the RBJ CookBook, its gain can be higher than 0 dB. For the classic 0 dB bandpass, we need to multiply the result with R2
Definition at line 58 of file juce_StateVariableFilter.h.
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inline |
Creates a filter with default parameters.
Definition at line 72 of file juce_StateVariableFilter.h.
References juce::dsp::StateVariableFilter::Filter< SampleType >::parameters, and juce::dsp::StateVariableFilter::Filter< SampleType >::reset().
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default |
Creates a copy of another filter.
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inlinenoexcept |
Resets the filter's processing pipeline.
Definition at line 87 of file juce_StateVariableFilter.h.
Referenced by juce::dsp::StateVariableFilter::Filter< SampleType >::Filter(), and juce::dsp::StateVariableFilter::Filter< SampleType >::prepare().
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inlinenoexcept |
Ensure that the state variables are rounded to zero if the state variables are denormals.
This is only needed if you are doing sample by sample processing.
Definition at line 93 of file juce_StateVariableFilter.h.
Referenced by juce::dsp::StateVariableFilter::Filter< SampleType >::processSample().
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inlinenoexcept |
Processes a single sample, without any locking or checking.
Use this if you need processing of a single value.
Definition at line 115 of file juce_StateVariableFilter.h.
References juce::dsp::StateVariableFilter::Filter< SampleType >::parameters, and juce::dsp::StateVariableFilter::Filter< SampleType >::snapToZero().
Parameters<NumericType>::Ptr juce::dsp::StateVariableFilter::Filter< SampleType >::parameters |
The parameters of the state variable filter.
It's up to the caller to ensure that these parameters are modified in a thread-safe way.
Definition at line 98 of file juce_StateVariableFilter.h.
Referenced by juce::dsp::StateVariableFilter::Filter< SampleType >::Filter(), and juce::dsp::StateVariableFilter::Filter< SampleType >::processSample().