39 lines
879 B
C
39 lines
879 B
C
/*
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* arngment - random music generator
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*
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* Written in 2020 by Lucas
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*
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* To the extent possible under law, the author(s) have dedicated all
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* copyright and related and neighboring rights to this software to the
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* public domain worldwide. This software is distributed without any
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* warranty.
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*
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* You should have received a copy of the CC0 Public Domain Dedication
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* along with this software. If not, see
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* <http://creativecommons.org/publicdomain/zero/1.0/>.
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*/
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#include <math.h>
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#define CLAMP(x, a, b) ((x) < (a) ? (a) : (x) > (b) ? (b) : (x))
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double
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synth_distortion(double gain, double x)
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{
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double xg = CLAMP(x * gain, -1.0, 1.0);
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return (x + xg) / 2.0;
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}
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double
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synth_sinewave(double t, double a)
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{
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return sin(2.0 * M_PI * t * a);
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}
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double
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synth_trianglewave(double t, double a)
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{
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double x = t * a;
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return 2.0 * fabs(2.0 * (x - floor(0.5 + x))) - 1.0;
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}
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