i did something similar to this to afraid my ex girlfrien at her home... may i say that YEAH

When she build her home, i suggest her to wire the house with speaker wire for paging, ambient music, door bell and bla bla ba. We put a " Mister'e multizone amplifier programmable controller" to do the stuff. Working very good, she was able to have music from tuner, cd, or else sound source from the main controller.

Few weeks before left her, i put a "mister'e ghost/crackle/voice from 4th dimension emulator" wich consist of a few pre-recorded sound on a chip. These sounds where activated randomly by motion detector connected to her home alarm system.

AAAAAAAAHHHHHHHHHHHHAAAAAAAAAAAAHHHHHHHHHHHHAAAAAA

was fun to heard about her by some of her friends.
"We think she's crazy now... she heard voices and sounds sometimes..."

Well it was a battery powered system... seems to be die as now.... as now

don't do that...