synthbassdrum.h

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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_SYNTHBD_H
#define DSY_SYNTHBD_H
 
#include "Filters/svf.h"
#include "Utility/dsp.h"
 
#include <stdint.h>
#ifdef __cplusplus
 
namespace daisysp
{
class SyntheticBassDrumClick
{
  public:
    SyntheticBassDrumClick() {}
    ~SyntheticBassDrumClick() {}
 
    void Init(float sample_rate);
 
    float Process(float in);
 
  private:
    float lp_;
    float hp_;
    Svf   filter_;
};
 
class SyntheticBassDrumAttackNoise
{
  public:
    SyntheticBassDrumAttackNoise() {}
    ~SyntheticBassDrumAttackNoise() {}
 
    void Init();
 
    float Process();
 
  private:
    float lp_;
    float hp_;
};
 
class SyntheticBassDrum
{
  public:
    SyntheticBassDrum() {}
    ~SyntheticBassDrum() {}
 
    void Init(float sample_rate);
 
    inline float DistortedSine(float phase, float phase_noise, float dirtiness);
 
    inline float TransistorVCA(float s, float gain);
 
    float Process(bool trigger = false);
 
    void Trig();
 
    void SetSustain(bool sustain);
 
    void SetAccent(float accent);
 
    void SetFreq(float freq);
 
    void SetTone(float tone);
 
    void SetDecay(float decay);
 
    void SetDirtiness(float dirtiness);
 
    void SetFmEnvelopeAmount(float fm_envelope_amount);
 
    void SetFmEnvelopeDecay(float fm_envelope_decay);
 
  private:
    float sample_rate_;
 
    bool  trig_;
    bool  sustain_;
    float accent_, new_f0_, tone_, decay_;
    float dirtiness_, fm_envelope_amount_, fm_envelope_decay_;
 
    float f0_;
    float phase_;
    float phase_noise_;
 
    float fm_;
    float fm_lp_;
    float body_env_;
    float body_env_lp_;
    float transient_env_;
    float transient_env_lp_;
 
    float sustain_gain_;
 
    float tone_lp_;
 
    SyntheticBassDrumClick       click_;
    SyntheticBassDrumAttackNoise noise_;
 
    int body_env_pulse_width_;
    int fm_pulse_width_;
};
 
} // namespace daisysp
#endif
#endif