sbl::dsp::comp::Lfo< TableSize > Class Template Reference

Detailed Description

template<uint16_t TableSize>
class sbl::dsp::comp::Lfo< TableSize >

Definition at line 39 of file lfo.hpp.

#include <lfo.hpp>

Public Member Functions
void	set_wavetable (const float *table)
	Set wavetable (must have guard points for interpolation)
void	set_increment (uint32_t inc)
	Set phase increment directly.
void	set_rate_su (float su)
	Set LFO rate from normalized [0,1] signal unit.
void	set_depth_su (float su)
	Set output amplitude from normalized [0,1] signal unit.
void	process (float *out, uint16_t frames)
	Generate modulation signal (bipolar: -depth to +depth)
void	sync ()
	Hard sync — reset phase to zero.
float	value () const
	Current LFO value (bipolar, float)
uint32_t	phase () const
	Current phase.
uint32_t	increment () const
	Current phase increment.

Friends
struct	LfoTestAccess

Member Function Documentation

set_wavetable()

template<uint16_t TableSize>

void sbl::dsp::comp::Lfo< TableSize >::set_wavetable ( const float *  table )

inline

Set wavetable (must have guard points for interpolation)

Note

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

Definition at line 46 of file lfo.hpp.

References sbl::dsp::primitives::WavetableReader< Size >::set_table().

set_increment()

template<uint16_t TableSize>

void sbl::dsp::comp::Lfo< TableSize >::set_increment ( uint32_t  inc )

inline

Set phase increment directly.

Definition at line 49 of file lfo.hpp.

References sbl::dsp::primitives::PhaseAccumulator::set_increment().

set_rate_su()

template<uint16_t TableSize>

void sbl::dsp::comp::Lfo< TableSize >::set_rate_su ( float  su )

inline

Set LFO rate from normalized [0,1] signal unit.

Parameters

su	Unipolar [0,1] — exponential map to 0.05–30 Hz

Exponential mapping gives fine resolution at low rates (slow sweeps) and coarser control at high rates (fast vibrato/tremolo).

Definition at line 60 of file lfo.hpp.

References sbl::dsp::math::fast_exp2f().

set_depth_su()

template<uint16_t TableSize>

void sbl::dsp::comp::Lfo< TableSize >::set_depth_su ( float  su )

inline

Set output amplitude from normalized [0,1] signal unit.

Parameters

su	Unipolar [0,1] — linear map to depth 0–1

Definition at line 71 of file lfo.hpp.

process()

template<uint16_t TableSize>

void sbl::dsp::comp::Lfo< TableSize >::process ( float *  out, uint16_t  frames  )

inline

Generate modulation signal (bipolar: -depth to +depth)

Parameters

out	Output buffer (float)
frames	Number of samples

Definition at line 84 of file lfo.hpp.

References sbl::dsp::primitives::PhaseAccumulator::advance(), sbl::dsp::primitives::PhaseAccumulator::phase(), and sbl::dsp::primitives::WavetableReader< Size >::read().

sync()

template<uint16_t TableSize>

void sbl::dsp::comp::Lfo< TableSize >::sync ( )

inline

Hard sync — reset phase to zero.

Definition at line 92 of file lfo.hpp.

References sbl::dsp::primitives::PhaseAccumulator::reset().

value()

template<uint16_t TableSize>

float sbl::dsp::comp::Lfo< TableSize >::value ( ) const

inline

Current LFO value (bipolar, float)

Definition at line 97 of file lfo.hpp.

References sbl::dsp::primitives::PhaseAccumulator::phase(), and sbl::dsp::primitives::WavetableReader< Size >::read().

phase()

template<uint16_t TableSize>

uint32_t sbl::dsp::comp::Lfo< TableSize >::phase ( ) const

inline

Current phase.

Definition at line 102 of file lfo.hpp.

References sbl::dsp::primitives::PhaseAccumulator::phase().

increment()

template<uint16_t TableSize>

uint32_t sbl::dsp::comp::Lfo< TableSize >::increment ( ) const

inline

Current phase increment.

Definition at line 105 of file lfo.hpp.

References sbl::dsp::primitives::PhaseAccumulator::increment().

Friends And Related Symbol Documentation

LfoTestAccess

template<uint16_t TableSize>

friend struct LfoTestAccess

friend

Definition at line 108 of file lfo.hpp.

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

• src/sbl/dsp/comp/lfo.hpp