pulp::signal::SvfT< SampleType > Class Template Reference

#include <svf.hpp>

Classes
struct	Coefficients
	The TPT state-variable coefficients for a sample rate, cutoff and resonance (Q): g = tan(pi fc / fs), k = 1 / Q, a1 = 1 / (1 + g (g + k)), a2 = g a1, a3 = g a2. More...

Public Types
enum class	Mode { lowpass , highpass , bandpass , notch }

Public Member Functions
void	set_sample_rate (SampleType sr)
void	set_frequency (SampleType hz)
void	set_resonance (SampleType q)
void	set_mode (Mode m)
void	configure (Mode mode, SampleType sample_rate, SampleType frequency, SampleType resonance)
	Install a coherent coefficient set in one prewarp.
SampleType	process (SampleType input)
void	process (SampleType *buffer, int num_samples)
	Process a buffer in place.
void	reset ()

Static Public Member Functions
static Coefficients	design (SampleType sample_rate, SampleType frequency, SampleType resonance)

Member Enumeration Documentation

Mode

template<typename SampleType = float>

enum class pulp::signal::SvfT::Mode

strong

Enumerator
lowpass
highpass
bandpass
notch

Member Function Documentation

configure()

template<typename SampleType = float>

void pulp::signal::SvfT< SampleType >::configure ( Mode mode, SampleType sample_rate, SampleType frequency, SampleType resonance )

inline

Install a coherent coefficient set in one prewarp.

Use this when sample rate and cutoff change together so neither setter temporarily evaluates the new value against the old value's Nyquist limit.

design()

template<typename SampleType = float>

Coefficients pulp::signal::SvfT< SampleType >::design ( SampleType sample_rate, SampleType frequency, SampleType resonance )

inlinestatic

process() [1/2]

template<typename SampleType = float>

void pulp::signal::SvfT< SampleType >::process ( SampleType * buffer, int num_samples )

inline

Process a buffer in place.

Same arithmetic as the per-sample path, with the mode resolved once per call and the coefficients and integrator states held in registers. The denormal snap runs once per kSnapChunkSamples chunk (snap_chunks()); it only alters states below 1e-15, so the output differs from the per-sample path only once a tail is already below that level.

process() [2/2]

template<typename SampleType = float>

SampleType pulp::signal::SvfT< SampleType >::process ( SampleType input )

inline

reset()

template<typename SampleType = float>

void pulp::signal::SvfT< SampleType >::reset ( )

inline

set_frequency()

template<typename SampleType = float>

void pulp::signal::SvfT< SampleType >::set_frequency ( SampleType hz )

inline

set_mode()

template<typename SampleType = float>

void pulp::signal::SvfT< SampleType >::set_mode ( Mode m )

inline

set_resonance()

template<typename SampleType = float>

void pulp::signal::SvfT< SampleType >::set_resonance ( SampleType q )

inline

set_sample_rate()

template<typename SampleType = float>

void pulp::signal::SvfT< SampleType >::set_sample_rate ( SampleType sr )

inline

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

• /home/runner/work/pulp/pulp/core/signal/include/pulp/signal/svf.hpp