Do you live in a haunted house?
From what I understand and also from what I have been able to gather by doing a little research into the subject, is that most paranormal researchers believe there are three basic types of haunting's. The most common of these is the residual imprint or memory type of haunting. The other less common is the intelligent haunt and third is the demonic or evil spirit type of haunting, which is supposedly the most rare and uncommon. Some paranormal researchers also believe there is a fourth type of haunting or what they like to refer to as poltergeist activity.
I used to somewhat of a skeptic and I believed that a residual or memory imprint type of haunting was pure bunk. My attitude was, that any residual sounds or apparitions that may be heard or seen was nothing more than an over active imagination and probably caused by the eeriness and spookiness of the surroundings themselves. But after some thought and deliberation on the idea of a memory or residual imprint type of haunting, I have come to the conclusion that a haunting of this nature is not only possible but is probable in some cases. I have come to this conclusion or realization, after thinking about how sounds and even images are captured using analog and digital audio and video recording devices and equipment.
If magnetic tape, digital media or even celluloid film can imprint upon itself the voices and/or images from the past, then I see absolutely no reason why it would also not be possible for any event to imprint itself upon the actual physical environment near where that event occurred. According to the laws of physics, at least the way I understand them, is that all matter which has mass is composed of electromagnetic energy. This energy is confined within the space of the atoms. The atoms and the subatomic or quantum particles within them, such as the electrons, neutrons, protons, etc, are also particles of electromagnetic energy as described by string theory. If this is true, and if you believe in the theories of quantum mechanics, then I absolutely have to believe that every energy generating event, from the smallest non-consequential to the most significant would somehow be imprinted upon the electromagnetic fields of matter within that environment. The environment near where that event occurred, like the walls, the ceiling, the floors and even the other objects within that space may be affected on a subatomic or quantum level by that energy. The electromagnetic fields of the matter within those items may be temporarily or perhaps even permanently altered. And under certain conditions or circumstances it may be possible that these events that were captured in this manner, by the environment could be played back again and again as long as the same elements of matter are in the vicinity where these events occurred.
High energy events or perhaps even the people themselves who once inhabited a particular house or location would probably have had a greater influence on the electromagnetic structure of the environment and surroundings than more mundane events would have had. And this I think is why paranormal researchers would be more likely to encounter this type of activity or haunting.