When My neighbor use water pump, I feel low frequency noise in room.
I think the noise come from sound wave,maybe add some resonance but I cannot feel vibration when I touch wall.
I try to talk with neighbor,before that I would like to record the noise as proof.
I have questions as below:
1.How to distinguish the noise,is that sound wave or resonance?
2.As I have only iphone and mono sound recorder,is that possible to record low frequency noise?
Thanks in advance.