China DOS Union

In the Avira alert sound options there is a pc speakers item. It can still make sound even without speakers plugged in. I remember the command line could make sounds too, but I don't know whether it can be like Avira's alert sound?

What is the principle behind Avira's alert sound? I couldn't find anything online.


The attachment is the sound

[ Last edited by QOIQoc on 2010-3-10 at 22:36 ]

The sound comes from the little speaker inside the case. The command line can only make a single tone.

echo 

You can also write some programs to make it sound rhythmically, for example
http://www.cn-dos.net/forum/viewthread.php?tid=50361

Thanks