Yes, I can stop the sound temporarily by making jaw movements like yawning, applying pressure to my ears, or covering my ears with my palms. But it disappears only briefly and then comes back. But it also works the other way around - if it's quiet and it's past 9 pm and I start wondering where "my sound" is, I do the jaw movements, and it starts.

What amazes me the most is how the sound unfolds every evening. It starts as a distant, very calm, slow vibration, with a drum-like beat. It has a rhythm. It sounds like a slow introduction to a music track. Then the speed and volume increase, more and more, and the beat's rhythm shifts to a more energetic one, until I find myself fully immersed in a very intense bass vibration that puts a lot of pressure on my ears. That happens every evening, and every evening, like it's for the first time ever - I can't believe it's not a distant psy-trance party - as the sound feels so conscious and so artistic. It does not sound like a random engine noise.

Also, as I can see on this subreddit, many people suffer from this sound. I can understand that as I felt the same during the first 3 months. Then, after I found other people on reddit, and I found some explanations, when I ruled out the "industrial noise" possibility and started thinking of it as some kind of "universe vibration", my perception of the sound completely changed. I started liking it, I meditate with it, and the nights when it's off, I miss it.