Hi (Sorry in advance, English is not my first language.)
Since a week, maybe two, I hear that mysterious noise, from I don't know where. It sounds like water dripping or something like that.
At first, I thought it came from outside but opening the window doesn't help me at all to find the location. In fact, it even seems to decrease its intensity.
I hear it mostly at night, but sometimes during the day. I'm sure it's not the rain and no water is running during the night. It usually lasts a minute, then comes back after 5-10 minutes.
I have trouble sleeping because of it.
I recorded it with my phone and amplified it. (Warning, it's loud.)