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#include "project.h"
#define SPP (SAMPLE_RATE/10)
static int16_t zero[SPP];
static int16_t one[SPP];
void signal_init (void)
{
unsigned i;
double t;
bzero (one, sizeof (one));
for (i = 0; i < SPP; ++i) {
t = (1.0 / (double) SAMPLE_RATE) * (double) i;
t *= CARRIER * 2.0 * M_PI;
#if 0
zero[i] = 32000 * sin (t);
#else
if (sin(t)<0) {
zero[i] = -32000;
} else {
zero[i] = 32000;
}
#endif
}
}
void signal_send_bp (int b)
{
if (b)
audio_play (one, sizeof (one));
else
audio_play (zero, sizeof (zero));
}
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