sbl::dsp::primitives::OnePole Class Reference

Detailed Description

Definition at line 38 of file one_pole.hpp.

#include <one_pole.hpp>

Public Member Functions
void	set_range (float min_hz, float max_hz)
	Set frequency range for _su mapping (configuration, not a signal)
void	set_cutoff_su (float su)
	Set cutoff frequency via signal unit.
void	set_coefficient (float a)
	Set filter coefficient directly.
float	process (float x)
	Process a single sample.
void	process (float *buf, uint16_t frames)
	Process a block of samples in-place.
float	value () const
	Current filter state (last output)
float	coefficient () const
	Current coefficient.
void	reset ()
	Reset filter state to zero.
void	reset (float initial)
	Reset filter state to a specific value.

Friends
struct	OnePoleTestAccess

Member Function Documentation

set_range()

void sbl::dsp::primitives::OnePole::set_range ( float  min_hz, float  max_hz  )

inline

Set frequency range for _su mapping (configuration, not a signal)

Note

All public methods are ISR-safe — bounded computation, no I/O.

Defines the Hz range that [0, 1] maps to exponentially. Default range is 20–20000 Hz.

Parameters

min_hz	Frequency at su = 0.0
max_hz	Frequency at su = 1.0

Definition at line 51 of file one_pole.hpp.

Referenced by sbl::dsp::pm::StringLoop::init(), and sbl::dsp::primitives::OnePoleHP::set_range().

set_cutoff_su()

void sbl::dsp::primitives::OnePole::set_cutoff_su ( float  su )

inline

Set cutoff frequency via signal unit.

Maps [0, 1] exponentially across the configured frequency range. su = 0.0 → min_hz, su = 1.0 → max_hz.

Parameters

su	Unipolar signal [0, 1]

Definition at line 64 of file one_pole.hpp.

References sbl::dsp::math::clamp01(), and sbl::dsp::math::su_to_hz().

Referenced by sbl::dsp::pm::StringLoop::init(), sbl::dsp::modules::AlgoReverb< ScalePercent >::process(), sbl::dsp::modules::TapeDelay::process(), sbl::dsp::primitives::OnePoleHP::set_cutoff_su(), and sbl::dsp::pm::StringLoop::set_damping_su().

set_coefficient()

void sbl::dsp::primitives::OnePole::set_coefficient ( float  a )

inline

Set filter coefficient directly.

a = 0.0 → no filtering (hold previous output), 1.0 → full passthrough.

Definition at line 73 of file one_pole.hpp.

Referenced by sbl::dsp::modules::AlgoReverb< ScalePercent >::process(), and sbl::dsp::primitives::OnePoleHP::set_coefficient().

process() [1/2]

float sbl::dsp::primitives::OnePole::process ( float  x )

inline

Process a single sample.

Parameters

x	Input sample

Returns

Filtered output

Definition at line 80 of file one_pole.hpp.

Referenced by process(), sbl::dsp::modules::AlgoReverb< ScalePercent >::process(), sbl::dsp::modules::TapeDelay::process(), sbl::dsp::primitives::OnePoleHP::process(), and sbl::dsp::pm::StringLoop::tick().

process() [2/2]

void sbl::dsp::primitives::OnePole::process ( float *  buf, uint16_t  frames  )

inline

Process a block of samples in-place.

Parameters

buf	Audio buffer (modified in-place)
frames	Number of samples

Definition at line 90 of file one_pole.hpp.

References process().

value()

float sbl::dsp::primitives::OnePole::value ( ) const

inline

Current filter state (last output)

Definition at line 97 of file one_pole.hpp.

coefficient()

float sbl::dsp::primitives::OnePole::coefficient ( ) const

inline

Current coefficient.

Definition at line 100 of file one_pole.hpp.

Referenced by sbl::dsp::primitives::OnePoleHP::coefficient().

reset() [1/2]

void sbl::dsp::primitives::OnePole::reset ( )

inline

Reset filter state to zero.

Definition at line 103 of file one_pole.hpp.

Referenced by sbl::dsp::modules::AlgoReverb< ScalePercent >::reset(), sbl::dsp::modules::TapeDelay::reset(), sbl::dsp::pm::StringLoop::reset(), sbl::dsp::primitives::OnePoleHP::reset(), and sbl::dsp::primitives::OnePoleHP::reset().

reset() [2/2]

void sbl::dsp::primitives::OnePole::reset ( float  initial )

inline

Reset filter state to a specific value.

Definition at line 106 of file one_pole.hpp.

Friends And Related Symbol Documentation

OnePoleTestAccess

friend struct OnePoleTestAccess

friend

Definition at line 109 of file one_pole.hpp.

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

• src/sbl/dsp/primitives/one_pole.hpp