Sound effects icon on iPad won't go away - iPad Apple Tablets & eReaders

Try this steps:

Restarting, resetting, or Force quitting the apps.
Restart iPad: Press and hold the Sleep/Wake button until the red slider appears. Slide your finger across the slider to turn off iPad. To turn iPad back on, press and hold the Sleep/Wake until the Apple logo appears.
Force quit an app: Press and hold the Sleep/Wake button on top of iPad for a few seconds until a red slider appears, then press and hold the Home button until the app quits.
If you can't turn off iPad or if the problem continues, you may need to reset iPad. This should be done only if turning iPad off and on doesn't resolve the problem.
Reset iPad: Press and hold the Sleep/Wake button and the Home button at the same time for at least ten seconds, until the Apple logo appears.