We have prepared a list of ghost voices known to ghost hunters as EVP, which stands for "Electronic Voice Phenomena". It's done through the use of an audio recording device. Usually the ghost hunter/investigator will turn on the device and ask any spirits that may be present some questions, then lay down the device and walk away for a while. Sometimes the ghosts will respond in voice or you might just hear them moving around or sometimes nothing at all. Helps to be in a haunted location or cemetery. 

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