If the existing floor lacks sufficient strength, it is not desirable to pour concrete, or costs need to be controlled, a lightweight floating floor is often the best choice. Very high levels of noise and vibration isolation can be achieved with a correctly designed system.
Rubber or spring isolators are used to support a floor made from layers of material. Layers are typically wooden boards, paving slabs or screed. Multiple layers, possibly including batons, are necessary to create a stiff floor and to introduce enough mass to correctly compress the isolator.