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author | IOhannes m zmölnig <zmoelnig@iem.at> | 2015-10-14 15:14:38 +0200 |
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committer | IOhannes m zmölnig <zmoelnig@iem.at> | 2015-10-14 15:14:38 +0200 |
commit | 28b7e464fd119b8c848753a1f41070422c463c41 (patch) | |
tree | 07449abdf85d8f1fd4068839b974242b429720ca /sc4pd/source/BrownNoise.cpp | |
parent | 90c6018a9401e38859f733b3521c919e042322b7 (diff) | |
parent | 6932ee2d22511226378218992b0005cb01eb235e (diff) |
Merge branchesHEADsvn2git-headmaster
- abstractions/tb
- externals/tb
Diffstat (limited to 'sc4pd/source/BrownNoise.cpp')
-rw-r--r-- | sc4pd/source/BrownNoise.cpp | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/sc4pd/source/BrownNoise.cpp b/sc4pd/source/BrownNoise.cpp new file mode 100644 index 0000000..316ee42 --- /dev/null +++ b/sc4pd/source/BrownNoise.cpp @@ -0,0 +1,156 @@ +/* sc4pd + BrownNoise, BrownNoise~ + + Copyright (c) 2004 Tim Blechmann. + + This code is derived from: + SuperCollider real time audio synthesis system + Copyright (c) 2002 James McCartney. All rights reserved. + http://www.audiosynth.com + + + This program is free software; you can redistribute it and/or + modify it under the terms of the GNU General Public License + as published by the Free Software Foundation; either version 2 + of the License, or (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + + Based on: + PureData by Miller Puckette and others. + http://www.crca.ucsd.edu/~msp/software.html + FLEXT by Thomas Grill + http://www.parasitaere-kapazitaeten.net/ext + SuperCollider by James McCartney + http://www.audiosynth.com + + Coded while listening to: AMM: Laminal + +*/ + +#include "sc4pd.hpp" + +/* ------------------------ BrownNoise~ -------------------------------*/ + +class BrownNoise_ar: + public sc4pd_dsp +{ + FLEXT_HEADER(BrownNoise_ar,sc4pd_dsp); + +public: + BrownNoise_ar(int argc, t_atom *argv); + +protected: + virtual void m_signal(int n, t_sample *const *in, t_sample *const *out); + + void m_seed(int i) + { + rgen.init(i); + } + +private: + float m_level; + RGen rgen; + FLEXT_CALLBACK_I(m_seed); +}; + +FLEXT_LIB_DSP_V("BrownNoise~",BrownNoise_ar); + +BrownNoise_ar::BrownNoise_ar(int argc, t_atom *argv) +{ + //parse arguments + AtomList Args(argc,argv); + + rgen.init(timeseed()); + m_level=rgen.frand2(); + + FLEXT_ADDMETHOD_(0,"seed",m_seed); + + AddOutSignal(); +} + + +void BrownNoise_ar::m_signal(int n, t_sample *const *in, + t_sample *const *out) +{ + t_sample *nout = *out; + + RGET; + + float z = m_level; + + for (int i = 0; i!= n;++i) + { + z += frand8(s1, s2, s3); + if (z > 1.f) + z = 2.f - z; + else + if (z < -1.f) + z = -2.f - z; + (*(nout)++) = z; + } + m_level = z; + + RPUT; +} + + +/* ------------------------ BrownNoise ---------------------------------*/ + +class BrownNoise_kr: + public flext_base +{ + FLEXT_HEADER(BrownNoise_kr,flext_base); + +public: + BrownNoise_kr(int argc, t_atom *argv); + +protected: + void m_perform(); + + void m_seed(int i) + { + rgen.init(i); + } + +private: + float m_level; + RGen rgen; + FLEXT_CALLBACK(m_perform); + FLEXT_CALLBACK_I(m_seed); +}; + +FLEXT_LIB_V("BrownNoise",BrownNoise_kr); + +BrownNoise_kr::BrownNoise_kr(int argc, t_atom *argv) +{ + FLEXT_ADDBANG(0,m_perform); + FLEXT_ADDMETHOD_(0,"seed",m_seed); + + //parse arguments + AtomList Args(argc,argv); + + rgen.init(timeseed()); + m_level=rgen.frand2(); + + AddOutFloat(); +} + +void BrownNoise_kr::m_perform() +{ + float z = m_level + rgen.frand8(); + if (z > 1.f) + z = 2.f - z; + else + if (z < -1.f) + z = -2.f - z; + ToOutFloat(0,z); + m_level = z; +} |