I bought a condo and the noise from the condo below is unbearable. The condo is wood construction and is 30 years old. It is a garden apartment style complex with 2 floors, 8 units to a building. There is no sound transfer from side to side, only from below. I am looking for a way to soundproof the floors. I have been Googling the term "Soundproofing floors" and all I come up with is companies trying to sell a product. Does anyone have any advice about how to soundproof the floors?