There are 4 classifications for EVP with Class A recordings being the rarest type. In most cases, you only want to publish Class A and Class B EVP recordings.
This type of recording is very clear. People in the immediate vicinity can make out the words used by the spirit, and it’s heard with your unaided ears. There is no need to play back the audio. Class A EVPs usually go with a highly active, intelligent haunting. However, your recorder may not capture the ghost’s voice. Ghostly Activities has only captured a Class A EVP a couple of times.
Class B is the most common type of EVP. The investigator may not hear it in real-time; it’s heard during audio playback. In most cases, you can make out the words after listening to the data a few times. You shouldn’t have to strain to understand the words. Many times, the Class B EVP is a name, laughter, screams, growls or humming. Ghostly Activities captured Class B EVP at the Congress Hotel and a session with a psychic medium.
If you watch ghost hunting reality shows, the investigators get this type a lot. The team will have an external microphone on their recorder for playback.
Class C EVPs are also very common, but you don’t understand what the ghost says. The recording may sound like whispers or murmurs. You have to use high-powered audio filters and amplifiers to get something understandable from the data. Ghostly Activities captures these quite a bit, but we don’t publish them. Be highly suspect of these EVPs because you can easily debunk them.
We usually debunk most Class D EVPs as background noise. Many times, it’s your mind matrixing the audio. If we can’t make the data out, we generally disregard this type of phenomenon.
If you get suspected EVP, but it doesn’t match your questioning cadence, then it’s very likely to be background noise or other natural cause.