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SOUNDS.C
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1986-12-15
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984b
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70 lines
/*
* sounds -- make various sounds on demand
*/
#include <stdio.h>
#include <conio.h>
#include <math.h>
#define ESC 27
extern void sound(unsigned int, float);
main()
{
int ch;
fprintf(stderr, "1=warble 2=error 3=confirm 4=warn\n");
fprintf(stderr, "Esc=quit\n");
while ((ch = getch()) != ESC)
switch (ch) {
case '1':
warble();
break;
case '2':
error();
break;
case '3':
confirm();
break;
case '4':
warn();
break;
}
exit(0);
}
#define CYCLES 3
#define LOTONE 600
#define HITONE 1200
#define PERIOD 0.1
warble()
{
int i;
for (i = 0; i < 2 * CYCLES; ++i)
if (i % 2)
sound(LOTONE, PERIOD);
else
sound(HITONE, PERIOD);
}
error()
{
float d = 0.1;
sound(440, d);
sound(220, d);
}
confirm()
{
float d = 0.1;
sound(440, d);
sound(880, d);
}
warn()
{
float d = 0.2;
sound(100, d);
}