From 3466a5ee2a4e03dae73f6c441d6f1daa5718952d Mon Sep 17 00:00:00 2001 From: gramanas Date: Fri, 7 Jul 2023 22:19:48 +0300 Subject: moar --- src/osc_saw.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 src/osc_saw.c (limited to 'src/osc_saw.c') diff --git a/src/osc_saw.c b/src/osc_saw.c new file mode 100644 index 0000000..fc31f6f --- /dev/null +++ b/src/osc_saw.c @@ -0,0 +1,28 @@ +#include "osc.h" + +osc_t OSC_saw = MAKE_OSC("f_saw", 20000, WAVE); + +OSC_COMMON(saw) + +float +sawX(float sm, int offset, int len) +{ + float dOutput = 0.0; + for (float n = 1.0; n < sm; n++) + dOutput += (sinf(n * 2.0 * M_PI * offset / len)) / n; + return 0.5 * dOutput; +} + +float +osc_saw(float offset) +{ + return osc_interpolate(offset, + sawX(25, (int)offset, OSC_saw.len), + sawX(25, osc_next_index(&OSC_saw, offset), OSC_saw.len)); +} + +float +osc_saw_next(float f, float offset) +{ + return osc_next_offset(&OSC_saw, f, offset); +} -- cgit v1.2.3