I too have heard the computer sound clairaudiently. One of those times I had asked to make contact w/ my guide, & could hear in real time that same high pitched computer-ish vibrational sound in response. And once it responded directly to me w/ "Let it go", when I was crying about an arguement my husband & I had gotten into.

The dog actually sounded louder on the tape! Although I heard it in real time,it was more muffled - like it was a couple of houses away outside(I remember thinking "Why does Mike <nieghbor> have his dog out so late on a work night?). But during play back, It sounded like it was up stairs in my living room. Very loud! I found this the most fascinating aspect of the tape because I could verify & time stamp the bark.

I've pondered the sequence too. It almost seems as if the entity heard it happen about 30 seconds before I heard it, by the way (she) reacted to it.

I have a friend that did an experiment to prove that spirit can be directed to notice a focal point. He set up a strobe light in one corner of the room , & a camera in the diagonally oppisite corner. His theory was that although some entities seem oblivious to our devices when caught on video tape, they could very well become aware & focus their attention on it if prompted. So he turned on the strobe light & turned on the camera. What he caught in snapshots,was spirit manifesting & moving towards the strobe, focusing their attention, seeming unaware of the camera. Then he would turn the strobe off, & they would start to interact w/ the camera on a more direct level & move from one corner to the other, as if asking "Hey what happened to that light?".

Brilliant I thought!