CombFilter.h (1398B)
1 /* 2 ZynAddSubFX - a software synthesizer 3 4 CombFilter.h - Several analog filters 5 Copyright (C) 2021-2021 Michael Kirchner 6 Author: Michael Kirchner 7 8 This program is free software; you can redistribute it and/or 9 modify it under the terms of the GNU General Public License 10 as published by the Free Software Foundation; either version 2 11 of the License, or (at your option) any later version. 12 */ 13 14 #pragma once 15 #include "Filter.h" 16 #include "Value_Smoothing_Filter.h" 17 18 namespace zyn { 19 20 class CombFilter:public Filter 21 { 22 public: 23 //! @param Fq resonance, range [0.1,1000], logscale 24 CombFilter(Allocator *alloc, unsigned char Ftype, float Ffreq, float Fq, 25 unsigned int srate, int bufsize); 26 ~CombFilter() override; 27 void filterout(float *smp) override; 28 void setfreq(float freq) override; 29 void setfreq_and_q(float freq, float q_) override; 30 void setq(float q) override; 31 void setgain(float dBgain) override; 32 void settype(unsigned char type); 33 34 private: 35 36 float* input; 37 float* output; 38 float gain; 39 float q; 40 unsigned char type; 41 42 float step(float x); 43 44 float tanhX(const float x); 45 float sampleLerp(float *smp, float pos); 46 47 float gainfwd; 48 float gainbwd; 49 float delay; 50 51 Allocator &memory; 52 int mem_size; 53 54 }; 55 56 }