Detailed Description

Standard Biquad filters adapated from https://www.w3.org/TR/audio-eq-cookbook/.

Parameters

[in]	signal
[in]	frequency
[in]	resonance
[out]	signal

Public Member Functions
void	init ()

void	update ()

void	on ()
	Turn the filter on.

void	off ()

bool	toggle ()
	Turn the filter on if it is off and off if it is on.

void	set_type (std::string name)

void	recalculate ()

Public Member Functions inherited from yase::IIRFilter
	IIRFilter (int P, int Q)

	IIRFilter (vector< double > A, vector< double > B)

void	init ()

void	update ()

void	set_coefficients (vector< double > A, vector< double > B)

Public Member Functions inherited from yase::Module
virtual void	init ()=0

virtual void	update ()=0

int	add_input (string name)

int	add_output (string name)

int	get_input_index (string name) const

string	get_input_name (int index) const

string	get_output_name (int index) const

int	get_output_index (string name) const

void	set_input (string name, double value)

void	set_input (int index, double value)

double	get_input (int index) const

double	get_input (string name) const

double	get_output (string name) const

double	get_output (int index) const

void	set_output (int index, double value)

void	copy_inputs (const Module &source)

void	copy_outputs (Module &destination) const

void	configure (std::vector< std::tuple< string, double > > assignments)

int	num_inputs () const

int	num_outputs () const

void	emit (Event e)

void	set_ts (double s)

double	get_ts ()

Member Function Documentation

◆ init()

void yase::Biquad::init ( )

virtual

This method should be overridden by derived classes. It will usually be called once, after all modules and connections objects have been added to a synthesizer, but before the synthesizer starts running.

Implements yase::Module.

◆ off()

void yase::Biquad::off ( )

Turn the filter off. In it's off state, the input signal is routed directly to the output signal.

◆ recalculate()

void yase::Biquad::recalculate ( )

Recalculate the coefficients of the filter. Generally this is done automatically when the frequency or resonance input changes.

◆ set_type()

void yase::Biquad::set_type ( std::string name )

Set the type of the filter to be either low pass, high pass, all pass, or band pass.

Parameters

name	Either "lpf", "hpf", "apf", or "bpf"

◆ update()

void yase::Biquad::update ( )