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76 lines
1.8 KiB
76 lines
1.8 KiB
4 years ago
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#pragma once
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#ifndef DSY_ZOSCILLATOR_H
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#define DSY_ZOSCILLATOR_H
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#include <stdint.h>
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#ifdef __cplusplus
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/** @file zoscillator.h */
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namespace daisysp
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{
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/**
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@brief ZOscillator Module \n
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@author Ben Sergentanis
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@date Dec 2020
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Sinewave multiplied by and sync'ed to a carrier. \n \n
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Ported from pichenettes/eurorack/plaits/dsp/oscillator/z_oscillator.h \n
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\n to an independent module. \n
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Original code written by Emilie Gillet in 2016. \n
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*/
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class ZOscillator
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{
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public:
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ZOscillator() {}
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~ZOscillator() {}
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/** Init ZOscillator module
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\param sample_rate Audio engine sample rate.
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*/
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void Init(float sample_rate);
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/** Get next sample
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*/
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float Process();
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/** Set the carrier frequency
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\param freq Frequency in Hz.
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*/
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void SetFreq(float freq);
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/** Set the formant osc. freq
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\param freq Frequency in Hz.
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*/
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void SetFormantFreq(float freq);
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/** Adjust the contour of the waveform.
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\param shape Waveshape to set. Works best 0-1.
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*/
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void SetShape(float shape);
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/** Set the offset amount and phase shift. \n
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< 1/3 is just phase shift, > 2/3 is just offset, and between them is both. \n
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\param mode Mode to set. Works best -1 to 1
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*/
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void SetMode(float mode);
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private:
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inline float Sine(float phase);
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inline float Z(float c, float d, float f, float shape, float mode);
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float sample_rate_;
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// Oscillator state.
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float carrier_phase_;
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float discontinuity_phase_;
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float formant_phase_;
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float next_sample_;
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// For interpolation of parameters.
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float carrier_frequency_;
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float formant_frequency_;
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float carrier_shape_, shape_new_;
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float mode_, mode_new_;
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};
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} // namespace daisysp
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#endif
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#endif
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