diff options
Diffstat (limited to 'arts/modules/synth/synth_brickwall_limiter_impl.cc')
| -rw-r--r-- | arts/modules/synth/synth_brickwall_limiter_impl.cc | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/arts/modules/synth/synth_brickwall_limiter_impl.cc b/arts/modules/synth/synth_brickwall_limiter_impl.cc new file mode 100644 index 00000000..107fe47a --- /dev/null +++ b/arts/modules/synth/synth_brickwall_limiter_impl.cc @@ -0,0 +1,51 @@ +/* + + Copyright (C) 2000 Jeff Tranter + tranter@pobox.com + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public + License as published by the Free Software Foundation; either + version 2 of the License, or (at your option) any later version. + + This library 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public License + along with this library; see the file COPYING.LIB. If not, write to + the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. + + */ + +#include "artsmodulessynth.h" +#include "stdsynthmodule.h" + +using namespace Arts; + +// A brickwall limiter is used to protect equipment (and your ears..) +// from peaks that exceed the dynamic range of your system. It doesn't +// sound good but it's better than digital distortion. + +class Synth_BRICKWALL_LIMITER_impl : virtual public Synth_BRICKWALL_LIMITER_skel, + virtual public StdSynthModule +{ +public: + void calculateBlock(unsigned long samples) + { + unsigned long i; + for(i=0; i<samples; i++) + { + if (invalue[i] > 1.0) + outvalue[i] = 1.0; + else if (invalue[i] < -1.0) + outvalue[i] = -1.0; + else + outvalue[i] = invalue[i]; + } + } +}; + +REGISTER_IMPLEMENTATION(Synth_BRICKWALL_LIMITER_impl); |