daisysp::Oscillator

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#include <oscillator.h>

Public Types

	Name
enum	@3

Public Functions

	Name
	Oscillator()
	~Oscillator()
void	Init(float sample_rate)
void	SetFreq(const float f)
void	SetAmp(const float a)
void	SetWaveform(const uint8_t wf)
void	SetPw(const float pw)
bool	IsEOR()
bool	IsEOC()
bool	IsRising()
bool	IsFalling()
float	Process()
void	PhaseAdd(float _phase)
void	Reset(float _phase =0.0f)

Detailed Description

class daisysp::Oscillator;

Synthesis of several waveforms, including polyBLEP bandlimited waveforms.

Public Types Documentation

enum @3

Enumerator	Value	Description
WAVE_SIN
WAVE_TRI
WAVE_SAW
WAVE_RAMP
WAVE_SQUARE
WAVE_POLYBLEP_TRI
WAVE_POLYBLEP_SAW
WAVE_POLYBLEP_SQUARE
WAVE_LAST

Choices for output waveforms, POLYBLEP are appropriately labeled. Others are naive forms.

Public Functions Documentation

function Oscillator

inline Oscillator()

---

function ~Oscillator

inline ~Oscillator()

---

function Init

inline void Init(
    float sample_rate
)

Parameters:

• sample_rate - sample rate of the audio engine being run, and the frequency that the Process function will be called.

Initializes the Oscillator

Defaults:

• freq_ = 100 Hz
• amp_ = 0.5
• waveform_ = sine wave.

---

function SetFreq

inline void SetFreq(
    const float f
)

Changes the frequency of the Oscillator, and recalculates phase increment.

---

function SetAmp

inline void SetAmp(
    const float a
)

Sets the amplitude of the waveform.

---

function SetWaveform

inline void SetWaveform(
    const uint8_t wf
)

Sets the waveform to be synthesized by the Process() function.

---

function SetPw

inline void SetPw(
    const float pw
)

Sets the pulse width for WAVE_SQUARE and WAVE_POLYBLEP_SQUARE (range 0 - 1)

---

function IsEOR

inline bool IsEOR()

Returns true if cycle is at end of rise. Set during call to Process.

---

function IsEOC

inline bool IsEOC()

Returns true if cycle is at end of cycle. Set during call to Process.

---

function IsRising

inline bool IsRising()

Returns true if cycle rising.

---

function IsFalling

inline bool IsFalling()

Returns true if cycle falling.

---

function Process

float Process()

Processes the waveform to be generated, returning one sample. This should be called once per sample period.

---

function PhaseAdd

inline void PhaseAdd(
    float _phase
)

Adds a value 0.0-1.0 (equivalent to 0.0-TWO_PI) to the current phase. Useful for PM and "FM" synthesis.

---

function Reset

inline void Reset(
    float _phase =0.0f
)

Resets the phase to the input argument. If no argumeNt is present, it will reset phase to 0.0;

---

Updated on 2024-01-03 at 19:38:46 +0000