#include <juce_LinkwitzRileyFilter.h>
Public Types | |
using | Type = LinkwitzRileyFilterType |
Public Member Functions | |
LinkwitzRileyFilter () | |
void | setType (Type newType) |
void | setCutoffFrequency (SampleType newCutoffFrequencyHz) |
Type | getType () const noexcept |
SampleType | getCutoffFrequency () const noexcept |
void | prepare (const ProcessSpec &spec) |
void | reset () |
template<typename ProcessContext> | |
void | process (const ProcessContext &context) noexcept |
SampleType | processSample (int channel, SampleType inputValue) |
void | processSample (int channel, SampleType inputValue, SampleType &outputLow, SampleType &outputHigh) |
void | snapToZero () noexcept |
A filter class designed to perform multi-band separation using the TPT (Topology-Preserving Transform) structure.
Linkwitz-Riley filters are widely used in audio crossovers that have two outputs, a low-pass and a high-pass, such that their sum is equivalent to an all-pass filter with a flat magnitude frequency response. The Linkwitz-Riley filters available in this class are designed to have a -24 dB/octave slope (LR 4th order).
Definition at line 48 of file juce_LinkwitzRileyFilter.h.
using juce::dsp::LinkwitzRileyFilter< SampleType >::Type = LinkwitzRileyFilterType |
Definition at line 52 of file juce_LinkwitzRileyFilter.h.
juce::dsp::LinkwitzRileyFilter< SampleType >::LinkwitzRileyFilter | ( | ) |
Constructor.
Definition at line 31 of file juce_LinkwitzRileyFilter.cpp.
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inlinenoexcept |
Returns the cutoff frequency of the filter.
Definition at line 70 of file juce_LinkwitzRileyFilter.h.
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inlinenoexcept |
Returns the type of the filter.
Definition at line 67 of file juce_LinkwitzRileyFilter.h.
void juce::dsp::LinkwitzRileyFilter< SampleType >::prepare | ( | const ProcessSpec & | spec | ) |
Initialises the filter.
Definition at line 54 of file juce_LinkwitzRileyFilter.cpp.
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inlinenoexcept |
Processes the input and output samples supplied in the processing context.
Definition at line 82 of file juce_LinkwitzRileyFilter.h.
SampleType juce::dsp::LinkwitzRileyFilter< SampleType >::processSample | ( | int | channel, |
SampleType | inputValue ) |
Performs the filter operation on a single sample at a time.
Definition at line 87 of file juce_LinkwitzRileyFilter.cpp.
Referenced by process().
void juce::dsp::LinkwitzRileyFilter< SampleType >::processSample | ( | int | channel, |
SampleType | inputValue, | ||
SampleType & | outputLow, | ||
SampleType & | outputHigh ) |
Performs the filter operation on a single sample at a time, and returns both the low-pass and the high-pass outputs of the TPT structure.
Definition at line 112 of file juce_LinkwitzRileyFilter.cpp.
void juce::dsp::LinkwitzRileyFilter< SampleType >::reset | ( | ) |
Resets the internal state variables of the filter.
Definition at line 71 of file juce_LinkwitzRileyFilter.cpp.
Referenced by prepare().
void juce::dsp::LinkwitzRileyFilter< SampleType >::setCutoffFrequency | ( | SampleType | newCutoffFrequencyHz | ) |
Sets the cutoff frequency of the filter in Hz.
Definition at line 44 of file juce_LinkwitzRileyFilter.cpp.
void juce::dsp::LinkwitzRileyFilter< SampleType >::setType | ( | Type | newType | ) |
Sets the filter type.
Definition at line 38 of file juce_LinkwitzRileyFilter.cpp.
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noexcept |
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 78 of file juce_LinkwitzRileyFilter.cpp.
Referenced by process().