is that some program is calling up this sound wave. Could it be your email software for whenever new email is received?
What you can do to attempt to find out is open the Task Manager, (right click the Taskbar then select Task Manager), click the Processes tab and use that to see what process uses most cpu activity when the sound plays. You will need the CPU Usage column from the View menu, then double click that column header so that cpu usage lists heaviest user at the top.
But that means you would have to ether wait patiently for the sound to play whilst watching the listing, or minimize the Task Manager and then trying to re-display it each time you hear the sound. Not entirely satisfactory.
My computer has recently started playing the System Notification sound
that is defined as Windows XP Balloon.wav in the Sounds and Audio
Device Properties at seemingly random intervels, and I cannot seem to
find out what application is triggering the playing of this sound. I am sure it is this sound specifically as I changed it up and the change was reflected in the sound that was playing. I have also been checking the event viewer under Administrative tools and haven't noticed any events that correspond with the issue at hand. It's slowly driving me crazy!
Thanks to everyone in advance, I appreciate your help.
P.S. I am running Windows XP Home