Enhanced Attack Skill Ring and "Normal" Attacks

I noticed that the Enhanced Attack Skill Ring said that it would only increase the power of Normal Attacks. But, I have not been able to find any information about what attacks are classified as "Normal" Attacks. So if I am playing as a melee user, are Perfect Attacks considered Normal Attacks or is a Normal Attack just a plain old, non-perfect melee attack?

A Normal Attack is just your basic non-Photon Art attack. The Ring will work whether or not you get your Perfect Attack timing.

Nice. That will help me decide what skill ring to use. Thank you very much.