During our first conversation, it is vital that we determine both the objective and the subjective causes for the problem as well as the perceptions of it. Any information on the type of noise, the time it occurs, the level of discomfort and clarity is essential for recommending the right type of system. Technical drawings and site photos are also helpful in dealing with the issue. The best option is a visit on site.
The described types of noises are representative of structured noise. It is characterized by high intensity and transmission along the concrete slab and the structure of the entire building. Sometimes, we can hear not only the neighbor upstairs stomping but also the one downstairs. This type of noise of one of the easiest to deal with but it is also nearly impossible if the building is complete. The only efficient solution is to work at the source (at the neighbor's in this case). There are several soundproofing options here. The easiest and most efficient is placing a thick needle felt carpeting to soften the contact with the floor. Another option is to build a new system of the floating floor type. Finally but least efficiently, one can install soundproof membranes for impact noise under the plasterwork or under the floor covering (laminate flooring, tiles, parquet).
Noise reduction options at the affected person's place are limited to building a room within the room system, in which case the walls, the ceiling, and the floor are insulated, while double doors and windows are also installed.
Much research is dedicated to soundproofing impact noise at the receiver's place. Unfortunately, there isn't yet a system whose results are good enough.