Well, I think I meant 300 HTz is the lowest a human can produce with their voice, therefore, to pick up human voices lower than 300 HTz then, it must be super natural.
I think ghosts are projections and can be in two places at once. Physically is one and mentally/spiritually is another. Like a thought you think could be a projection done mentally/spiritually from Heaven or Hell. Then there is the physical way where one travels from somewhere (Heaven or Hell) to Earth.
I think it is possible to exist after death once the soul leaves like light in space. Einstein explained this phenomenon saying light travels through space from millions of years ago made by a star burning out or projecting light. If the soul travels on this same frequency then it is possible to say that the soul also lasts forever in the same sense.
As far as EVP goes, perhaps this frequency can decrease and increase to an audible range, thus, hearing foot steps, knocking, voices, etc... is possible for the human being. A test to conduct would be to tape a room abnormally cold or hot with a tape recorder and then to jack up the sound and filter the track. Try to listen for voices on the tape. Another way to test this theory is to take a video camera and to hook it up to a TV for output and point the camera directly at the TV screen so that you cause the effect of layers upon layers. Supposably this causes a weird frequency which people think and even scientist think, is the same or close frequency ghosts communicate with. The result should be human faces being shown in the TV screen. You would need to slow the recording down with some editing software to see this because the output would be traveling at what? - 12 frames a second?
Anyway, I think ghosts are both good and bad and they can be both. They hate to be disturbed, they sometimes cling to places which caused them grief in life, and they normally ask for help and sometimes wonder why they are still here. I heard some EVP where a child said it is dark here, it was where some kids and their mother were forced to hide during a civial war battle. The researchers said the room was well lit at the time so, this tells us that it is possible they operate outside of reality and may not adhere to time as we know it.
It is written that the dead sleep yet, it is also written that the dead can be summoned and with the power of God can be redirected back to the body (Jesus and Lazuarus). So why not some sort of purgatory for souls to neutral to be either damned or saved? There is nothing in the Bible (that I can find) to confirm these assumptions but the bible does hint to the existance of Ghosts, something to think about.
And the equation is the demulsification of the big picture. If there is ghosts here on Earth:
1. Why are they here?
2. What did they do to get stuck here?
3. Will they ever go to Heaven or Hell or will they have a place with the fallen angels of Enoch?
Here is one for the Catholics to teeth on. St. Benedict jotted records of dealing with a ghost. He said, a brother in the abbey was dieing and before he died he told his brother he had gold and where to find it. This was a sin against the brothers because everyone was to share and no man should have his own personal possesions. His brother told the other brothers and they decided not to pray for him in his time of need. The brother died and they buried him and covered the hole with horse and cow manuer. After 30 days passed, the brother felt guilty and had a vision of his brother as a ghost and his brother asked him to pray and give to the poor and to move his body (I think). Well they finally did and the ghost reappeared and thanked them. So even Catholics as saintly as Saint Benedict believed in ghosts, my friends.
Link:
http://www.eyewitnesstohistory.com/monastery.htm
P.s. This was a good thread with good replies. =)