?? aud.c
字號:
#include <stdio.h>
#include <math.h>
#define DMASIZE 16384
main()
{
unsigned char buf[DMASIZE];
double x,y;
unsigned samp;
int i;
FILE *fp;
fp = fopen("test.aud","wb");
for(i=0;i<4096;i++){
x = 2*3.141592653589*(i*256.)/4096.;
samp = 32767 * cos(x);
buf[4*i] = samp;
buf[4*i+1] = samp >> 8;
x = 2*3.141592653589*(i*192.)/4096.;
samp = 32767 * cos(x);
buf[4*i+2] = samp;
buf[4*i+3] = samp >> 8;
}
fwrite(buf,1,DMASIZE,fp);
fclose(fp);
}
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