When we lived in Texas, we had sounds that came through radios, the tv, baby monitor, the computer speakers. So, we thought that it was just interference of some sort. We then decided that we would unplug these things to make the (demonic) sound stop...soooooooooooo creepy. The worst part was that it would continue even with those things being unplugged. When our daughter was a toddler, she would stop and stare and hysterically scream and shake until we had to take her out of the house. There was even one time that we couldn't find our dog, searched and searched, calling her name. We finally found her hunched in the back of her locked kennel.
I didn't put her in there, I had been in the shower and my husband had been in bed. We never believed in evil spirits or anything of the sort so we tried to dismiss it. We finally couldn't dismiss it any longer because of the extreme panic and terror that it was causing our daughter. Anyway, I just wanted you to know that I understand what you are saying.
Can I ask if these sounds contiue when you are away from your home??