#include <filter.hpp>

Inheritance diagram for rack::dsp::TBiquadFilter< T >:

Collaboration diagram for rack::dsp::TBiquadFilter< T >:

Public Types
enum	Type { LOWPASS_1POLE , HIGHPASS_1POLE , LOWPASS , HIGHPASS , LOWSHELF , HIGHSHELF , BANDPASS , PEAK , NOTCH , NUM_TYPES }

Public Member Functions
	TBiquadFilter ()

void	setParameters (Type type, float f, float Q, float V)
	Calculates and sets the biquad transfer function coefficients.

Public Member Functions inherited from rack::dsp::IIRFilter< 3, 3, float >
	IIRFilter ()

void	reset ()

void	setCoefficients (const float b, const float a)

float	process (float in)

std::complex< float >	getTransferFunction (float s)
	Computes the complex transfer function $H(s)$ at a particular frequency s: normalized angular frequency equal to $2 \pi f / f_{sr}$ ($\pi$ is the Nyquist frequency)

float	getFrequencyResponse (float f)

float	getFrequencyPhase (float f)

Additional Inherited Members
Public Attributes inherited from rack::dsp::IIRFilter< 3, 3, float >
float	b [B_ORDER]
	transfer function numerator coefficients: b_0, b_1, etc.

float	a [A_ORDER - 1]
	transfer function denominator coefficients: a_1, a_2, etc.

float	x [B_ORDER - 1]
	input state x[0] = x_{n-1} x[1] = x_{n-2} etc.

float	y [A_ORDER - 1]
	output state

Member Enumeration Documentation

◆ Type

template<typename T = float>

template<typename T = float>

rack::dsp::TBiquadFilter< T >::TBiquadFilter ( )

inline

template<typename T = float>

void rack::dsp::TBiquadFilter< T >::setParameters	(	Type	type,
		float	f,
		float	Q,
		float	V )

inline

Calculates and sets the biquad transfer function coefficients.

f: normalized frequency (cutoff frequency / sample rate), must be less than 0.5 Q: quality factor V: gain

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