One way you can soundproof your hardwood floors is by installing the flooring with a resilient underlayment and damping compound.
Dif sound proof my wood floors.
Most flooring installers leave the thinnest layer of plywood under your floor covering in place of better underlayment products.
They are also used behind drywall on walls and ceilings.
The resilient underlayment separates the construction materials and the damping compound helps to further disperse sound energy.
Floated glued wood floors and nailed wood floors.
Mass loaded vinyl sound barriers are easy to install and provide noise reduction when installed beneath wood flooring.
Any of these choices will minimize floor noise.
When a hardwood floor is installed directly on the subfloor there is no layer designed to absorb the vibration caused by your footsteps.
Walking on wood floors produces loud footstep noise in the rooms below.
Flooring is the final stage of your soundproofing process.
But if you want to soundproof your floor properly you ll need something that can prevent sound from leaking downward.
Install your choice of finished flooring such as hardwood wood laminate or tile on top of the underlayment as a floating raft in other words do not attach it to the layer beneath with nails screws or adhesive.
Also leave a gap between the edge of the flooring and each wall and fill the gap with acoustic sealant.
You can choose to install tiles hardwood or laminate wood linoleum or carpet.
It also has a part to play in reducing noise.