Added DaisySP

daisysp/Noise/grainlet.h

@@ -0,0 +1,92 @@
+/*
+Copyright (c) 2020 Electrosmith, Corp, Emilie Gillet
+
+Use of this source code is governed by an MIT-style
+license that can be found in the LICENSE file or at
+https://opensource.org/licenses/MIT.
+*/
+
+#pragma once
+#ifndef DSY_GRAINLET_H
+#define DSY_GRAINLET_H
+
+#include <stdint.h>
+#ifdef __cplusplus
+
+/** @file grainlet.h */
+namespace daisysp
+{
+/**  
+       @brief Granular Oscillator Module. 
+       @author Ben Sergentanis
+       @date Dec 2020 
+       A phase-distorted single cycle sine * another continuously running sine, \n
+       the whole thing synced to a main oscillator. \n \n
+       Ported from pichenettes/eurorack/plaits/dsp/oscillator/grainlet_oscillator.h \n 
+       to an independent module. \n
+       Original code written by Emilie Gillet in 2016. \n
+*/
+
+class GrainletOscillator
+{
+  public:
+    GrainletOscillator() {}
+    ~GrainletOscillator() {}
+
+    /** Initialize the oscillator
+        \param sample_rate Sample rate of audio engine
+    */
+    void Init(float sample_rate);
+
+    /** Get the next sample */
+    float Process();
+
+    /** Sets the carrier frequency
+        \param freq Frequency in Hz
+    */
+    void SetFreq(float freq);
+
+    /** Sets the formant frequency
+        \param freq Frequency in Hz
+    */
+    void SetFormantFreq(float freq);
+
+    /** Waveshaping
+        \param shape Shapes differently from 0-1, 1-2, and > 2.
+    */
+    void SetShape(float shape);
+
+    /** Sets the amount of formant to bleed through
+        \param bleed Works best 0-1
+    */
+    void SetBleed(float bleed);
+
+  private:
+    float Sine(float phase);
+
+    float Carrier(float phase, float shape);
+
+    float Grainlet(float carrier_phase,
+                   float formant_phase,
+                   float shape,
+                   float bleed);
+
+    // Oscillator state.
+    float carrier_phase_;
+    float formant_phase_;
+    float next_sample_;
+
+    // For interpolation of parameters.
+    float carrier_frequency_;
+    float formant_frequency_;
+    float carrier_shape_;
+    float carrier_bleed_;
+
+    float new_carrier_shape_;
+    float new_carrier_bleed_;
+
+    float sample_rate_;
+};
+} // namespace daisysp
+#endif
+#endif