Console beep function?

[Mxsmanic]

What is the closest thing to a beep function for the system console on
FreeBSD?  I have a program I want to port from Windows that beeps
intermittently at various frequencies, and it appears that there's no direct
equivalent of the Windows functions for making noise.  Suggestions?  It will
only be run on the console, so it doesn't have to work for remote terminals
or anything.