Yeah I was going to tell you to go check what was the last thing you installed last? That might b causing the problem your having! Fyi
Most of those battery app's are junk and don't really help you!

That's why I learned with my Skyrocket, not to use unnecessary app's. I've tried everything with that phone. And over time you'll see what is good and what is junk!

So NOW if you want to clear out the audio setting!
Then go into setting, applications, All, setting, clear data, reboot into recovery and then wipe cache & dalvik and see if it's still happening. After you set up your audio sounds! Might b something that was, corrupt in the data causing it!
Just my 2¢®
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