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Stopping Vibration from Walmart trucks

I have for the past two weeks had problems with my living room and master bedroom having a low frequency issues in the center of each room, when certain trucks are delivering at a Walmart about 100 yards or so away.
Does anyone know how to disperse the low frequency waves in the room. As you move towards the walls, even in the direction of the Walmart the subwoofer effect goes away.

I have probably contributed to the issue by taking down an old wooden fence and replacing with a wrought iron fence, so we could enjoy a greenbelt between us and Walmart. My wife and I noticed the problem about two days after replacing the fence. It is only noticeable on some evenings with certain trucks, and is actually louder in my living room than at Walmart.

I was wanting to add bass traps are whatever is needed, as I don't want to go back to the fenced in backyard.

Thanks,



acman3
elizabeth
6,726 posts
 
Another possible method would take some time, and a lot of fiddling. Make three or so boards, with perhaps wooden stakes. Arrange them in the yard toward the Store area offending you. One closer, the the two back to the sides. In a V like arrangement. They would not need to be any taller than say half the fence?? WAS. but up in the air nearly as high. Just like baffles... Really IMO all you need is a slight attenuation and it would stop the strange artifact inside the home.Perhaps starting with them line of sight from windows to dock?
Another possible way Costing $$$, is a loudspeaker noise abatement system in your yard. The system picks up noise, and plays cancelling anti noise..
djones51
617 posts
 
Plant some evergreen trees.
acman3 OP
2,267 posts
 
I appreciate all the ideas, and will play around with them in the next few weeks.

I was thinking today, why is the noise strongest in the middle of the rooms, with both rooms being different sizes. It dawned on me there is a fireplace insert in the center of the two rooms. It is open to the living room and backs up to the bedroom. I am going to check that out a little better too.

There is a wall of double pane windows, with shutters, facing in the direction of the Walmart, in both rooms, so I suspected that would be a problem.  They have done a great job on cutting down on the noise, and give us what light we have in these areas. The house is fairly tight and that may hurt with internal resonance.

The strangest thing is I actually looked into the possibility of having a problem when taking down the fence and the several articles said a fence would have to be 12' tall to have an effect, due to the waves going around/over the fence. I guess they were wrong in this case.

I have been landscaping, and will add more plants along the fence, but the greenbelt is a forest, except for a gully in the center. I like more plants so no big deal.I have four 20' trees in the back yard, but only two in the line of sight of these rooms.

Thanks again!
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