The noise is very high-pitched. I am the only one that hears it, but no one else can. It is not in my head. Seriously, it's from the TV. I can hear it throughout the whole house, and it is VERY annoying. It is an older TV, I don't know when we got it, but it was like that since we got. If there is a reason as to why it is like that, please do tell. I will consider to throw the TV out and get a new one, but if I can fix it, it would be great. Thanks.