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52 lines
1.7 KiB
52 lines
1.7 KiB
/*
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Copyright (C) 2000 Jeff Tranter
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tranter@pobox.com
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#include <math.h>
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#include "artsmodulessynth.h"
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#include "stdsynthmodule.h"
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using namespace Arts;
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// The tremolo module modulates the amplitude according to a LFO-Wave.
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// Traditionally you would use a sine wave but why limit yourself?
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// What you get is a very intense effect that cuts through most
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// arrangements because of its high dynamic range. The tremolo effect
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// is still one of guitarists favorite effects although it's not as
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// popular as in the 1960's.
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class Synth_TREMOLO_impl : virtual public Synth_TREMOLO_skel,
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virtual public StdSynthModule
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{
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public:
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void calculateBlock(unsigned long samples)
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{
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unsigned long i;
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for(i=0; i<samples; i++)
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{
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// simply modulate the amplitude
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outvalue[i] = invalue[i] * fabs(inlfo[i]);
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}
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}
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};
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REGISTER_IMPLEMENTATION(Synth_TREMOLO_impl);
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