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Last update 6 years 3 months by Olivier Gillet
Filesplaitsdspfx
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diffuser.h
fx_engine.h
low_pass_gate.h
overdrive.h
sample_rate_reducer.h
diffuser.h
// Copyright 2016 Olivier Gillet. // // Author: Olivier Gillet (ol.gillet@gmail.com) // // Permission is hereby granted, free of charge, to any person obtaining a copy // of this software and associated documentation files (the "Software"), to deal // in the Software without restriction, including without limitation the rights // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell // copies of the Software, and to permit persons to whom the Software is // furnished to do so, subject to the following conditions: // // The above copyright notice and this permission notice shall be included in // all copies or substantial portions of the Software. // // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN // THE SOFTWARE. // // See http://creativecommons.org/licenses/MIT/ for more information. // // ----------------------------------------------------------------------------- // // Granular diffuser. #ifndef PLAITS_DSP_FX_DIFFUSER_H_ #define PLAITS_DSP_FX_DIFFUSER_H_ #include "stmlib/stmlib.h" #include "plaits/dsp/fx/fx_engine.h" namespace plaits { class Diffuser { public: Diffuser() { } ~Diffuser() { } void Init(uint16_t* buffer) { engine_.Init(buffer); engine_.SetLFOFrequency(LFO_1, 0.3f / 48000.0f); lp_decay_ = 0.0f; } void Clear() { engine_.Clear(); } void Process(float amount, float rt, float* in_out, size_t size) { typedef E::Reserve<126, E::Reserve<180, E::Reserve<269, E::Reserve<444, E::Reserve<1653, E::Reserve<2010, E::Reserve<3411> > > > > > > Memory; E::DelayLine<Memory, 0> ap1; E::DelayLine<Memory, 1> ap2; E::DelayLine<Memory, 2> ap3; E::DelayLine<Memory, 3> ap4; E::DelayLine<Memory, 4> dapa; E::DelayLine<Memory, 5> dapb; E::DelayLine<Memory, 6> del; E::Context c; const float kap = 0.625f; const float klp = 0.75f; float lp = lp_decay_; while (size--) { float wet; engine_.Start(&c); c.Read(*in_out); c.Read(ap1 TAIL, kap); c.WriteAllPass(ap1, -kap); c.Read(ap2 TAIL, kap); c.WriteAllPass(ap2, -kap); c.Read(ap3 TAIL, kap); c.WriteAllPass(ap3, -kap); c.Interpolate(ap4, 400.0f, LFO_1, 43.0f, kap); c.WriteAllPass(ap4, -kap); c.Interpolate(del, 3070.0f, LFO_1, 340.0f, rt); c.Lp(lp, klp); c.Read(dapa TAIL, -kap); c.WriteAllPass(dapa, kap); c.Read(dapb TAIL, kap); c.WriteAllPass(dapb, -kap); c.Write(del, 2.0f); c.Write(wet, 0.0f); *in_out += amount * (wet - *in_out); ++in_out; } lp_decay_ = lp; } private: typedef FxEngine<8192, FORMAT_12_BIT> E; E engine_; float lp_decay_; DISALLOW_COPY_AND_ASSIGN(Diffuser); }; } // namespace plaits #endif // PLAITS_DSP_FX_DIFFUSER_H_
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