How to start a system "beep", from the built-in pc speaker, using a batch file?

I have written an interactive batch script where tasks sometimes take a long time to complete. After each task, the script prompts the user to decide whether to proceed to the next task, return to the main menu, or something else.

I would like to add an "Interactive Alarm" command that makes a small, short beep (like the one heard when turning on a PC) to alert the user of new questions.

Requirements:

• The beep should not use a GUI application like WMP.
• It should function from the background and can use a free speaker or a third-party CLI application.
• It can make use of Cygwin, which I have installed on my Windows 7 x64 system.

Notes:

• The alarm will be placed right before the interactive questions, waiting for the user's answer to proceed. This means that the batch script can not be terminated only to produce a sound.

Is this possible, and how can it be implemented?

It's not possible to type the BEL directly in (for example) notepad.

To get it, type echo ^G>>yourbatch.bat on the command line (don't type ^ G, but <Control>-G, which will be shown as ^G on the screen). That puts a strange looking character to the end of your file. That's the BELcharacter 0x007 ("control-G"). Just copy/move it to any echo command, you like. Also

set /p "input=^Ggive value: "

is possible (where the ^G represents that strange char)