Thread: How Is This Infrasound / Subacoustic Noise Being Produced?

I think you would be extremely hard pressed to find someone that can just hear that and deduce what it is.
You might try to follow the noise with a hand mic and an amplifier and see if you can narrow down where it is coming from.
It could be a household appliance or or a ceiling fan motor... jeez... so many possibilities...

How long has this been happening? Is it constant?

Where did you vanish off to De_Happel ???