sbl::dsp::primitives::PhaseAccumulator Class Reference

Detailed Description

Definition at line 30 of file phase_accumulator.hpp.

#include <phase_accumulator.hpp>

Public Member Functions
void	set_increment (uint32_t inc)
	Set the phase increment per sample.
void	advance ()
	Advance phase by one sample.
void	advance (uint16_t frames, uint32_t *out)
	Advance and fill a buffer with per-sample phases.
uint32_t	phase () const
	Current phase value.
uint32_t	increment () const
	Current phase increment.
void	reset ()
	Reset phase to zero.
void	reset (uint32_t phase)
	Reset phase to a specific value (for sync)

Static Public Member Functions
static uint32_t	freq_to_inc (float freq_hz, float sr=types::SAMPLE_RATE_F)
	Convert frequency in Hz to phase increment.

Member Function Documentation

set_increment()

void sbl::dsp::primitives::PhaseAccumulator::set_increment ( uint32_t  inc )

inline

Set the phase increment per sample.

Note

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

inc = frequency_hz * 2^32 / sample_rate Use freq_to_inc() for Hz input.

Definition at line 40 of file phase_accumulator.hpp.

Referenced by sbl::dsp::comp::Lfo< TableSize >::set_increment().

advance() [1/2]

void sbl::dsp::primitives::PhaseAccumulator::advance ( )

inline

Advance phase by one sample.

Definition at line 43 of file phase_accumulator.hpp.

Referenced by sbl::dsp::modules::TapeDelay::process(), and sbl::dsp::comp::Lfo< TableSize >::process().

advance() [2/2]

void sbl::dsp::primitives::PhaseAccumulator::advance ( uint16_t  frames, uint32_t *  out  )

inline

Advance and fill a buffer with per-sample phases.

Each output element is the phase AFTER advancing. Useful for batch wavetable reads.

Definition at line 51 of file phase_accumulator.hpp.

phase()

uint32_t sbl::dsp::primitives::PhaseAccumulator::phase ( ) const

inline

Current phase value.

Definition at line 59 of file phase_accumulator.hpp.

Referenced by sbl::dsp::comp::Lfo< TableSize >::phase(), sbl::dsp::modules::TapeDelay::process(), sbl::dsp::comp::Lfo< TableSize >::process(), reset(), and sbl::dsp::comp::Lfo< TableSize >::value().

increment()

uint32_t sbl::dsp::primitives::PhaseAccumulator::increment ( ) const

inline

Current phase increment.

Definition at line 62 of file phase_accumulator.hpp.

Referenced by sbl::dsp::comp::Lfo< TableSize >::increment().

reset() [1/2]

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

inline

Reset phase to zero.

Definition at line 65 of file phase_accumulator.hpp.

Referenced by sbl::dsp::modules::TapeDelay::reset(), and sbl::dsp::comp::Lfo< TableSize >::sync().

reset() [2/2]

void sbl::dsp::primitives::PhaseAccumulator::reset ( uint32_t  phase )

inline

Reset phase to a specific value (for sync)

Definition at line 68 of file phase_accumulator.hpp.

References phase().

freq_to_inc()

static uint32_t sbl::dsp::primitives::PhaseAccumulator::freq_to_inc ( float  freq_hz, float  sr = types::SAMPLE_RATE_F  )

inlinestatic

Convert frequency in Hz to phase increment.

Parameters

freq_hz	Frequency in Hz (e.g., 440.0f)
sr	Sample rate (default: SAMPLE_RATE_F global)

Returns

Phase increment per sample

Definition at line 77 of file phase_accumulator.hpp.

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

• src/sbl/dsp/primitives/phase_accumulator.hpp