This is a little off topic for an audio forum but I'm hoping someone with a microphone can measure the noise in their house and tell me if this chart is normal.
We live in a 89 year old house and for the last few months we have heard a low-frequency rumble sound all the time. Even with everything in the house turned off. It's the same everywhere in the house but we don't hear it outside or under the floor (pier and beam) or in the attic. It's constant and unchanging so I thought I would measure it with my microphone and REW. There seems to be a higher level of noise below 100 Hz on REW.
. I would like to know if this unusual or is it common in a house? It's driving us crazy and causing loss of sleep. The trace is with 1/6 smoothing.
We live in a 89 year old house and for the last few months we have heard a low-frequency rumble sound all the time. Even with everything in the house turned off. It's the same everywhere in the house but we don't hear it outside or under the floor (pier and beam) or in the attic. It's constant and unchanging so I thought I would measure it with my microphone and REW. There seems to be a higher level of noise below 100 Hz on REW.