beep()

Syntax:

[void] sysinfo.beep(Int frequency, Int duration)

Description:

The beep method produces a beep tone in a specified frequency for a specified duration.

Argument:

frequency:
+ +
Defines the frequency of the tone measured in Hz (Hertz).
+ +

Note: The maximum and minimum values for frequency are naturally device-specific. If the specified frequency is out of the device's supported range, the maximum frequency is applied.

duration:
+ +
Defines the duration of how long the beep tone lasts. The period is measured in milliseconds.
+
If the duration is 0, the beep tone will last infinitely.
+ +

Return value:

This method does not return a value.

Remarks:

To stop an infinitive beep, call the beep method again with any value that is different from 0.

Example code:

function beepAlert()
+{
+   // call the beep function with frequency 220Hz 
+   // for the duration 2 seconds
+   sysinfo.beep(220, 2000);
+}