Added DaisySP

2026-04-24 14:46:05 +02:00
parent 82190216c3
commit dd63b3aed4
96 changed files with 10613 additions and 0 deletions
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+/*
+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_SYNTHSD_H
+#define DSY_SYNTHSD_H
+
+#include "Filters/svf.h"
+
+#include <stdint.h>
+#ifdef __cplusplus
+
+/** @file synthsnaredrum.h */
+
+namespace daisysp
+{
+/**  
+       @brief Naive snare drum model (two modulated oscillators + filtered noise).
+       @author Ben Sergentanis
+       @date Jan 2021
+       Uses a few magic numbers taken from the 909 schematics: \n 
+       - Ratio between the two modes of the drum set to 1.47. \n
+       - Funky coupling between the two modes. \n
+       - Noise coloration filters and envelope shapes for the snare. \n \n
+       Ported from pichenettes/eurorack/plaits/dsp/drums/synthetic_snare_drum.h \n
+       to an independent module. \n
+       Original code written by Emilie Gillet in 2016. \n
+*/
+class SyntheticSnareDrum
+{
+  public:
+    SyntheticSnareDrum() {}
+    ~SyntheticSnareDrum() {}
+
+    /** Init the module
+        \param sample_rate Audio engine sample rate
+    */
+    void Init(float sample_rate);
+
+    /** Get the next sample.
+        \param trigger True = hit the drum. This argument is optional.
+    */
+    float Process(bool trigger = false);
+
+    /** Trigger the drum */
+    void Trig();
+
+    /** Make the drum ring out infinitely.
+        \param sustain True = infinite sustain.
+    */
+    void SetSustain(bool sustain);
+
+    /** Set how much accent to use
+        \param accent Works 0-1.
+    */
+    void SetAccent(float accent);
+
+    /** Set the drum's root frequency
+        \param f0 Freq in Hz
+    */
+    void SetFreq(float f0);
+
+    /** Set the amount of fm sweep.
+        \param fm_amount Works from 0 - 1.
+    */
+    void SetFmAmount(float fm_amount);
+
+    /** Set the length of the drum decay
+        \param decay Works with positive numbers
+    */
+    void SetDecay(float decay);
+
+    /** Sets the mix between snare and drum.
+        \param snappy 1 = just snare. 0 = just drum.
+    */
+    void SetSnappy(float snappy);
+
+  private:
+    inline float DistortedSine(float phase);
+
+    float sample_rate_;
+
+    bool  trig_;
+    bool  sustain_;
+    float accent_, f0_, fm_amount_, decay_, snappy_;
+
+    float phase_[2];
+    float drum_amplitude_;
+    float snare_amplitude_;
+    float fm_;
+    float sustain_gain_;
+    int   hold_counter_;
+
+    Svf drum_lp_;
+    Svf snare_hp_;
+    Svf snare_lp_;
+};
+} // namespace daisysp
+#endif
+#endif