Random duo-tone sound with no obvious link to alarm, badge, alert, game or other app
I also have this duo-tone sound, kind of 'tada', that does not fit any of the existing sounds under General -Sounds. I turned OFF all sounds, all notifications, and went through all my programs (I don't have any games). If turned the volume down, but this beep continues anyway, at random. My wife says it is like a tamagushi, it serves to force me to take the iPad and check on it. But I cannot figure out what the sound announces or is related to. Appreciate any input or idea.
One more word. I had lost all sound and the sound buttons in the General Settings were apparently not working. I applied a a workaround that i found on a forum. It called for changing the function of the side switch from lock rotation to MUTE. This effectively corrected the problem and returned the normal sound function and the keyboard clicks. But then this random beep or duo-tone appeared...
Any help is appreciated, thanks