sbl::dsp::PhaseAccumulator Class Reference

#include <phase.hpp>

Collaboration diagram for sbl::dsp::PhaseAccumulator:

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=48000.0f)
	Convert frequency in Hz to phase increment.

Detailed Description

Definition at line 23 of file phase.hpp.

Member Function Documentation

advance() [1/2]

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

inline

Advance phase by one sample.

Definition at line 36 of file phase.hpp.

Referenced by sbl::widgets::mod::Lfo< TableSize >::process(), sbl::widgets::source::ScanningOsc< TableSize, MaxTables >::process(), and sbl::widgets::source::WavetableOsc< TableSize >::process().

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advance() [2/2]

void sbl::dsp::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 44 of file phase.hpp.

freq_to_inc()

static uint32_t sbl::dsp::PhaseAccumulator::freq_to_inc ( float  freq_hz, float  sr = 48000.0f  )

inlinestatic

Convert frequency in Hz to phase increment.

Parameters

freq_hz	Frequency in Hz (e.g., 440.0f)
sr	Sample rate (default 48000)

Returns

Phase increment per sample

Definition at line 70 of file phase.hpp.

Referenced by sbl::widgets::source::ScanningOsc< TableSize, MaxTables >::set_frequency(), sbl::widgets::source::WavetableOsc< TableSize >::set_frequency(), and sbl::widgets::mod::Lfo< TableSize >::set_rate().

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increment()

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

inline

Current phase increment.

Definition at line 55 of file phase.hpp.

Referenced by sbl::widgets::mod::Lfo< TableSize >::increment(), sbl::widgets::source::ScanningOsc< TableSize, MaxTables >::increment(), and sbl::widgets::source::WavetableOsc< TableSize >::increment().

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phase()

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

inline

Current phase value.

Definition at line 52 of file phase.hpp.

Referenced by sbl::widgets::mod::Lfo< TableSize >::phase(), sbl::widgets::source::ScanningOsc< TableSize, MaxTables >::phase(), sbl::widgets::source::WavetableOsc< TableSize >::phase(), sbl::widgets::mod::Lfo< TableSize >::process(), sbl::widgets::source::ScanningOsc< TableSize, MaxTables >::process(), sbl::widgets::source::WavetableOsc< TableSize >::process(), reset(), and sbl::widgets::mod::Lfo< TableSize >::value().

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reset() [1/2]

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

inline

Reset phase to zero.

Definition at line 58 of file phase.hpp.

Referenced by sbl::widgets::mod::Lfo< TableSize >::sync(), sbl::widgets::source::ScanningOsc< TableSize, MaxTables >::sync(), sbl::widgets::source::WavetableOsc< TableSize >::sync(), and sbl::widgets::source::WavetableOsc< TableSize >::sync().

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reset() [2/2]

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

inline

Reset phase to a specific value (for sync)

Definition at line 61 of file phase.hpp.

References phase().

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set_increment()

void sbl::dsp::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 33 of file phase.hpp.

Referenced by sbl::widgets::source::ScanningOsc< TableSize, MaxTables >::set_frequency(), sbl::widgets::source::WavetableOsc< TableSize >::set_frequency(), sbl::widgets::mod::Lfo< TableSize >::set_increment(), sbl::widgets::source::ScanningOsc< TableSize, MaxTables >::set_increment(), sbl::widgets::source::WavetableOsc< TableSize >::set_increment(), sbl::widgets::source::ScanningOsc< TableSize, MaxTables >::set_note(), sbl::widgets::source::WavetableOsc< TableSize >::set_note(), and sbl::widgets::mod::Lfo< TableSize >::set_rate().

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

• src/sbl/dsp/phase.hpp