Plays back a beep to the user.
Beep ( [Frequency [, Duration]] )
|Frequency||[optional] The frequency of the beep in hertz. Can be anywhere from 37 through 32,767 (0x25 through 0x7FFF). Default is 500 Hz.|
|Duration||[optional] The length of the beep in milliseconds. Default = 1000 ms.|
; plays back a beep noise, at the frequency 500 for 1 second