IIRFilter Class Reference

An IIR filter that can perform low, high, or band-pass filtering on an audio signal, and which attempts to implement basic thread-safety. More...

#include <juce_IIRFilter.h>

Inheritance diagram for IIRFilter:

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

Additional Inherited Members
Protected Member Functions inherited from IIRFilterBase< SpinLock >
IIRFilter &	operator= (const IIRFilter &)=delete
Protected Attributes inherited from IIRFilterBase< SpinLock >
SpinLock	processLock
IIRCoefficients	coefficients
float	v1
float	v2
bool	active

Detailed Description

An IIR filter that can perform low, high, or band-pass filtering on an audio signal, and which attempts to implement basic thread-safety.

This class synchronises calls to some of its member functions, making it safe (although not necessarily real-time-safe) to reset the filter or apply new coefficients while the filter is processing on another thread. In most cases this style of internal locking should not be used, and you should attempt to provide thread-safety at a higher level in your program. If you can guarantee that calls to the filter will be synchronised externally, you could consider switching to SingleThreadedIIRFilter instead.

See also

SingleThreadedIIRFilter, IIRCoefficient, IIRFilterAudioSource

Member Function Documentation

IIRFilterBase() [1/2]

IIRFilterBase< Mutex >::IIRFilterBase ( )

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.

IIRFilterBase() [2/2]

IIRFilterBase< Mutex >::IIRFilterBase ( const IIRFilterBase & )

noexcept

Creates a copy of another filter.

---

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

• juce_audio_basics/utilities/juce_IIRFilter.h