IIRFilter Class Reference

An IIR filter that can perform low, high, or band-pass filtering on an audio signal. More...

Public Member Functions
	IIRFilter () noexcept
	Creates a filter. More...
	IIRFilter (const IIRFilter &) noexcept
	Creates a copy of another filter. More...
	~IIRFilter () noexcept
	Destructor. More...
void	makeInactive () noexcept
	Clears the filter so that any incoming data passes through unchanged. More...
void	setCoefficients (const IIRCoefficients &newCoefficients) noexcept
	Applies a set of coefficients to this filter. More...
IIRCoefficients	getCoefficients () const noexcept
	Returns the coefficients that this filter is using. More...
void	reset () noexcept
	Resets the filter's processing pipeline, ready to start a new stream of data. More...
void	processSamples (float *samples, int numSamples) noexcept
	Performs the filter operation on the given set of samples. More...
float	processSingleSampleRaw (float sample) noexcept
	Processes a single sample, without any locking or checking. More...

Protected Member Functions
IIRFilter &	operator= (const IIRFilter &)=delete

Protected Attributes
SpinLock	processLock
IIRCoefficients	coefficients
float	v1 = 0
float	v2 = 0
bool	active = false

Detailed Description

An IIR filter that can perform low, high, or band-pass filtering on an audio signal.

See also

IIRCoefficient, IIRFilterAudioSource

Constructor & Destructor Documentation

IIRFilter() [1/2]

IIRFilter::IIRFilter ( )

noexcept

Creates a filter.

Initially the filter is inactive, so will have no effect on samples that you process with it. Use the setCoefficients() method to turn it into the type of filter needed.

IIRFilter() [2/2]

IIRFilter::IIRFilter ( const IIRFilter &  )

noexcept

Creates a copy of another filter.

~IIRFilter()

IIRFilter::~IIRFilter ( )

noexcept

Destructor.

Member Function Documentation

makeInactive()

void IIRFilter::makeInactive ( )

noexcept

Clears the filter so that any incoming data passes through unchanged.

setCoefficients()

void IIRFilter::setCoefficients ( const IIRCoefficients &  newCoefficients )

noexcept

Applies a set of coefficients to this filter.

getCoefficients()

IIRCoefficients IIRFilter::getCoefficients ( ) const

noexcept

Returns the coefficients that this filter is using.

reset()

void IIRFilter::reset ( )

noexcept

Resets the filter's processing pipeline, ready to start a new stream of data.

Note that this clears the processing state, but the type of filter and its coefficients aren't changed. To put a filter into an inactive state, use the makeInactive() method.

processSamples()

void IIRFilter::processSamples ( float *  samples, int  numSamples  )

noexcept

Performs the filter operation on the given set of samples.

processSingleSampleRaw()

float IIRFilter::processSingleSampleRaw ( float  sample )

noexcept

Processes a single sample, without any locking or checking.

Use this if you need fast processing of a single value, but be aware that this isn't thread-safe in the way that processSamples() is.

operator=()

IIRFilter& IIRFilter::operator= ( const IIRFilter &  )

protecteddelete

Member Data Documentation

processLock

SpinLock IIRFilter::processLock

protected

coefficients

IIRCoefficients IIRFilter::coefficients

protected

v1

float IIRFilter::v1 = 0

protected

v2

float IIRFilter::v2 = 0

protected

active

bool IIRFilter::active = false

protected

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The documentation for this class was generated from the following file:

• juce_audio_basics/utilities/juce_IIRFilter.h