Most adults can''t hear the sound.
But it''s so annoying for most young people, animal, insect.
Its depending on your ear-sight.
Long click to set them as ringtone or notification.
Check your ear-age now!
1.Set beep duration.
any other request?
You can put it to sdcard if Android 2.2, 2.3, 3.0, 3.1, 3.2, 4.0