First for me it wasn't a continuous tone, but really low frequency stuff (say below 50 Hz), like vehicles in the distance, but continuous (people idling cars outside would drive me nuts). Never found any solution or source. I now think it's just resonance of the land/buildings. Maybe it was some kind of sensitivity to it. Maybe something physiological in my body actually generating that near my ears. Where I live now it's quiet. I can still hear vehicles a block away when they pull up and stop, or idle, but it doesn't drive me nuts anymore.
For the brown noise I use an old mp3 player with some noise tracks (used Audacity to generate an 8-hour track to convert to mp3).
First for me it wasn't a continuous tone, but really low frequency stuff (say below 50 Hz), like vehicles in the distance, but continuous (people idling cars outside would drive me nuts). Never found any solution or source. I now think it's just resonance of the land/buildings. Maybe it was some kind of sensitivity to it. Maybe something physiological in my body actually generating that near my ears. Where I live now it's quiet. I can still hear vehicles a block away when they pull up and stop, or idle, but it doesn't drive me nuts anymore.
For the brown noise I use an old mp3 player with some noise tracks (used Audacity to generate an 8-hour track to convert to mp3).
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