daisysp::HarmonicOscillator

Harmonic Oscillator Module based on Chebyshev polynomials. More...

#include <harmonic_osc.h>

Public Functions

	Name
	HarmonicOscillator()
	~HarmonicOscillator()
void	Init(float sample_rate)
float	Process()
void	SetFreq(float freq)
void	SetFirstHarmIdx(int idx)
void	SetAmplitudes(const float * amplitudes)
void	SetSingleAmp(const float amp, int idx)

Detailed Description

template <int num_harmonics =16>
class daisysp::HarmonicOscillator;

Harmonic Oscillator Module based on Chebyshev polynomials.

Author: Ben Sergentanis

Date: Dec 2020 Harmonic Oscillator Module based on Chebyshev polynomials

Works well for a small number of harmonics. For the higher order harmonics.

We need to reinitialize the recurrence by computing two high harmonics.

Ported from pichenettes/eurorack/plaits/dsp/oscillator/harmonic_oscillator.h

to an independent module.

Original code written by Emilie Gillet in 2016.

Public Functions Documentation

function HarmonicOscillator

inline HarmonicOscillator()

---

function ~HarmonicOscillator

inline ~HarmonicOscillator()

---

function Init

inline void Init(
    float sample_rate
)

Parameters:

• sample_rate Audio engine samplerate

Initialize harmonic oscillator

---

function Process

inline float Process()

Get the next floating point sample

---

function SetFreq

inline void SetFreq(
    float freq
)

Parameters:

• freq Freq to be set in Hz.

Set the main frequency

---

function SetFirstHarmIdx

inline void SetFirstHarmIdx(
    int idx
)

Parameters:

• idx Default behavior is 1. Values < 0 default to 1.

Offset the set of harmonics. Passing in 3 means "harmonic 0" is the 3^rd harm., 1 is the 4^th, etc.

---

function SetAmplitudes

inline void SetAmplitudes(
    const float * amplitudes
)

Parameters:

• amplitudes Amplitudes to set. Sum of all amplitudes must be < 1. The array referenced must be at least as large as num_harmonics.

Set the amplitudes of each harmonic of the root.

---

function SetSingleAmp

inline void SetSingleAmp(
    const float amp,
    int idx
)

Parameters:

• amp Amplitude to set
• idx Which harmonic to set.

Sets one amplitude. Does nothing if idx out of range.

---

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