OpenShot Audio Library | OpenShotAudio 0.4.0
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#include <juce_StateVariableFilter.h>
Public Types | |
using | NumericType = typename SampleTypeHelpers::ElementType< SampleType >::Type |
using | ParametersPtr = typename Parameters< NumericType >::Ptr |
Public Member Functions | |
Filter () | |
Filter (ParametersPtr parametersToUse) | |
Filter (const Filter &)=default | |
Filter (Filter &&)=default | |
void | prepare (const ProcessSpec &) noexcept |
void | reset () noexcept |
void | snapToZero () noexcept |
template<typename ProcessContext > | |
void | process (const ProcessContext &context) noexcept |
SampleType JUCE_VECTOR_CALLTYPE | processSample (SampleType sample) noexcept |
Public Attributes | |
Parameters< NumericType >::Ptr | parameters |
An IIR filter that can perform low, band and high-pass filtering on an audio signal, with 12 dB of attenuation per 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 as its gain can be higher than 0 dB. For the classic 0 dB bandpass, we need to multiply the result by R2.
Note 2: Using this class prevents some loud audio artefacts commonly encountered when changing the cutoff frequency using other filter simulation structures and IIR filter classes. However, this class may still require additional smoothing for cutoff frequency changes.
see IIRFilter, SmoothedValue
Definition at line 55 of file juce_StateVariableFilter.h.
using juce::dsp::StateVariableFilter::Filter< SampleType >::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)
Definition at line 62 of file juce_StateVariableFilter.h.
using juce::dsp::StateVariableFilter::Filter< SampleType >::ParametersPtr = typename Parameters<NumericType>::Ptr |
A typedef for a ref-counted pointer to the coefficients object
Definition at line 65 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.
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inline |
Creates a filter using some parameters.
Definition at line 77 of file juce_StateVariableFilter.h.
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default |
Creates a copy of another filter.
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default |
Move constructor
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inlinenoexcept |
Initialization of the filter
Definition at line 88 of file juce_StateVariableFilter.h.
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inlinenoexcept |
Definition at line 106 of file juce_StateVariableFilter.h.
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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 119 of file juce_StateVariableFilter.h.
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inlinenoexcept |
Resets the filter's processing pipeline.
Definition at line 91 of file juce_StateVariableFilter.h.
Referenced by juce::dsp::StateVariableFilter::Filter< SampleType >::Filter(), 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 97 of file juce_StateVariableFilter.h.
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 102 of file juce_StateVariableFilter.h.
Referenced by juce::dsp::StateVariableFilter::Filter< SampleType >::processSample().