git ssb

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#include <math.h>
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#include "tune.h"
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static float tune_play(struct tune *tune, double time, float in)
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{
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	return 0.99 * (sin(2. * M_PI * time * 440.) * 0.25 + in * 0.75);
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}
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const struct tune TUNE = {
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	.play = tune_play,
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};
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