I seem to hear popping in the walls on one side of my house and I think when it does it most often is when wind is blowing towards its direction. I might sometimes hear an occasional popping in the celing too, but is is mainly in the wall and it will come in spurts of like 5 or 6 pops in a row throughout the wall and then take a break. I have seen that this can be foundation settling on other questions, but I was wondering if this could be something else also. House was build in 1994.