LowPassFilter< T > Class Template Reference

Biquad DF2 Low Pass Filter. When dealing with high-order IIR filters, they can get unstable. To prevent this, BiQuadratic filters (second order) are used. Converted from https://github.com/tttapa/Filters/blob/master/src/BiQuad.h Use float or double (and not a integer type) as type parameter. More...

#include <Filter.h>

Inheritance diagram for LowPassFilter< T >:

Public Member Functions
	LowPassFilter ()=default
	LowPassFilter (float frequency, float sampleRate, float q=0.7071f)
void	begin (float frequency, float sampleRate, float q=0.7071f)
T	process (T value)

Protected Attributes
T	a_1 = 0
T	a_2 = 0
T	b_0 = 0
T	b_1 = 0
T	b_2 = 0
T	w_0 = 0
T	w_1 = 0

Detailed Description

template<typename T>
class audio_tools::LowPassFilter< T >

Biquad DF2 Low Pass Filter. When dealing with high-order IIR filters, they can get unstable. To prevent this, BiQuadratic filters (second order) are used. Converted from https://github.com/tttapa/Filters/blob/master/src/BiQuad.h Use float or double (and not a integer type) as type parameter.

Author

pschatzmann

Copyright

GNU General Public License v3.0

Template Parameters

T

Constructor & Destructor Documentation

LowPassFilter() [1/2]

template<typename T >

LowPassFilter ( )

default

LowPassFilter() [2/2]

template<typename T >

LowPassFilter ( float  frequency, float  sampleRate, float  q = 0.7071f  )

inline

Member Function Documentation

begin()

template<typename T >

void begin ( float  frequency, float  sampleRate, float  q = 0.7071f  )

inline

process()

template<typename T >

T process ( T  value )

inlinevirtualinherited

Implements Filter< T >.

Member Data Documentation

a_1

template<typename T >

T a_1 = 0

protectedinherited

a_2

template<typename T >

T a_2 = 0

protectedinherited

b_0

template<typename T >

T b_0 = 0

protectedinherited

b_1

template<typename T >

T b_1 = 0

protectedinherited

b_2

template<typename T >

T b_2 = 0

protectedinherited

w_0

template<typename T >

T w_0 = 0

protectedinherited

w_1

template<typename T >

T w_1 = 0

protectedinherited

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

• src/AudioTools/CoreAudio/AudioFilter/Filter.h