Can't sleep

Civilisation makes me sick. Yet, I need it. I'm spending more time in front of the computer because of web design jobs. So there is not much needlework I can show.
There is a high tone in my left ear (the better one) which keeps me from sleeping or wakes me up very early, recently before 4 in the morning. It seems to be different from a normal acoustic tone. It penetrates earplugs and cushions. But it is not a tinnitus; this one is in my right ear, I know it and it doesn't disturb me much. I seem to "hear" electromagnetic waves. There must be a new device in the house. I think I'll have to write to my neighbours (can't talk to all of them) and ask them to really switch off all W-Lan computers and cordless phones during the night. Today I woke up after 7 hours of sleep, hurray, that's a lot. The tone kept me awake the night before. I'm keeping a diary to find a pattern.
I heard about the Taos Hum. I can hear something similar, but I got used to it. But this is new and very annoying.
Good night, wish me good sleep.