sound?

[schloob]

i can't seem to find a decent tutorial on how to produce a note with a given frequency for a given amount of time (like the windows Beep command).. does anyone have any resources? either OSS or ALSA is fine.

or better yet, does anyone read this forum?

thanks

[Jimbo]

I read the forum, but only as a learning resource

[Kybo Ren]

From http://www.codecomments.com/archive286- ... 82318.html :

Code: Select all

#include <linux/kd.h>

static void pc_beep(int freq) {
int fd;

/* Try both std and devfs name */
fd = open("/dev/tty1", O_RDWR|O_NONBLOCK);
if (fd < 0) {
fd = open("/dev/vc/1", O_RDWR|O_NONBLOCK);
}
if (fd >= 0) {
ioctl(fd, KDMKTONE, ((75/*ms?*/ << 16) | freq));
}
}