How can I record low frequency bass neighbor noise? Police say they can't hear it and won't do anything unless I can prove it. I feel the vibrations more than hear them. The sound is below 250Hz and between 78 and 105 dB, C-weighted frequency. All I have is an HP laptop. What do I need to buy? I'm on a very tight budget. This is a health issue, as I can't sleep with their booming noise all the time. Earplugs give me ear infections. My white noise machines running at max (77 dBA) won't mask this sound. My nerves are shot. Headaches for hours even after it (rarely) stops. Bought a Cyber Acoustics "noise canceling computer stand microphone," which is worthless. Bought a Digital Sound Level Meter (40-130dB, A and C weighted, CE AZ8928), but can't convince officers to use it or believe the records I've been keeping. Neighbors said they don't have subwoofers or a big amp, but that's hard to believe with sound this intense. Tried putting rubber mats on the carpet under my bed and even used tires against my bedroom wall to help block the sound, but no luck. Living in a mobile home on 1/4 acre, so no concrete slab. Suspended floor vibrates. Walls and ceiling vibrate. Light bulbs burn out fast. Dishes rattle out of cabinet. Pictures fall off walls. Can't afford to move. Please help!