Class A EVP  " A clear and distinct voice that is heard and indisputably understood by anyone with normal hearing and not have to be told or persuaded to what was or is being said. it can be heard and understood by all".

Class B EVP " A voice or sound that is fairly loud and can be heard by most people. This is a more common Voice Phenomena and most people if told what to listen for are able to identify fairly easy".

Class C EVP " A faint and whispery voice that is hard to hear and is sometimes indecipherable. Most times headphones must be used on playback to hear these Voice Phenomena".

Disembodied Voice : This is a voice that breaks the air and is heard and understood by all , there will be no mistake when you hear this kind of voice phenomena.

DR EVP (Direct Response) " This is when an Entity clearly answers questions that it is asked with great intelligence".

PC EVP (Personal Contact) " The Entity clearly directs a response to someone present at the time of investigation".

RV EVP (Random Voice Phenomena) " This is a voice that answers no direct question, and doesn't appear to be directed to any person and it makes no sense in the context it was received".

BGNP (Background Noise Phenomena) " This Phenomena occurs when an Entity uses a background noise to manifest a voice such as a car going by someone talking, someones clothes rustling together a train going by and so on".

HPHVP (Head phoned Heard Voice Phenomena) " As an investigator we love to try and gain the advantage on the spirits we are always trying to outsmart them in our investigation techniques to capture them on film and audio. What we have found out is that if you plug your headphones to you digital recorder it amplifies the sound and lets you hear on a hertz level that you can not hear regularly with your ears. An HHVP is heard when plugged into the recorder if you are the only one plugged in you will hear more EVPS then the rest of your investigators due to the amplification through the headphones, give it a try you won't be disappointed.