dsp::biquad_filter_module Class Reference

#include <audio_fx.h>

Inheritance diagram for dsp::biquad_filter_module:

Public Types
enum	{   mode_12db_lp = 0 , mode_24db_lp = 1 , mode_36db_lp = 2 , mode_12db_hp = 3 ,   mode_24db_hp = 4 , mode_36db_hp = 5 , mode_6db_bp = 6 , mode_12db_bp = 7 ,   mode_18db_bp = 8 , mode_6db_br = 9 , mode_12db_br = 10 , mode_18db_br = 11 ,   mode_allpass = 12 , mode_count }

Public Member Functions
	biquad_filter_module ()
void	calculate_filter (float freq, float q, int mode, float gain=1.0)
	Calculate filter coefficients based on parameters - cutoff/center frequency, q, filter type, output gain.
void	filter_activate ()
	Reset filter state.
void	sanitize ()
	Remove denormals.
int	process_channel (uint16_t channel_no, const float *in, float *out, uint32_t numsamples, int inmask, float lvl_in=1., float lvl_out=1.)
	Process a single channel (float buffer) of data.
float	freq_gain (int subindex, float freq, float srate) const
	Determine gain (|H(z)|) for a given frequency.
Public Member Functions inherited from dsp::filter_module_iface
virtual	~filter_module_iface ()

Public Attributes
uint32_t	srate

Private Attributes
dsp::biquad_d1	left [3]
dsp::biquad_d1	right [3]
int	order

Member Enumeration Documentation

anonymous enum

anonymous enum

Enumerator
mode_12db_lp
mode_24db_lp
mode_36db_lp
mode_12db_hp
mode_24db_hp
mode_36db_hp
mode_6db_bp
mode_12db_bp
mode_18db_bp
mode_6db_br
mode_12db_br
mode_18db_br
mode_allpass
mode_count

Constructor & Destructor Documentation

biquad_filter_module()

dsp::biquad_filter_module::biquad_filter_module ( )

inline

Member Function Documentation

calculate_filter()

void biquad_filter_module::calculate_filter ( float freq, float q, int mode, float gain = 1.0 )

virtual

Calculate filter coefficients based on parameters - cutoff/center frequency, q, filter type, output gain.

Implements dsp::filter_module_iface.

filter_activate()

void biquad_filter_module::filter_activate ( )

virtual

Reset filter state.

Implements dsp::filter_module_iface.

freq_gain()

float biquad_filter_module::freq_gain ( int subindex, float freq, float srate ) const

virtual

Determine gain (|H(z)|) for a given frequency.

Implements dsp::filter_module_iface.

Reimplemented in calf_plugins::envelopefilter_audio_module.

process_channel()

int biquad_filter_module::process_channel ( uint16_t channel_no, const float * in, float * out, uint32_t numsamples, int inmask, float lvl_in = 1., float lvl_out = 1. )

virtual

Process a single channel (float buffer) of data.

Implements dsp::filter_module_iface.

sanitize()

void biquad_filter_module::sanitize ( )

virtual

Remove denormals.

Implements dsp::filter_module_iface.

Member Data Documentation

left

dsp::biquad_d1 dsp::biquad_filter_module::left[3]

private

order

int dsp::biquad_filter_module::order

private

right

dsp::biquad_d1 dsp::biquad_filter_module::right[3]

private

srate

uint32_t dsp::biquad_filter_module::srate

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

• /home/runner/work/lmms-fork/lmms-fork/plugins/LadspaEffect/calf/veal/src/calf/audio_fx.h
• /home/runner/work/lmms-fork/lmms-fork/plugins/LadspaEffect/calf/veal/src/audio_fx.cpp