What is structure-borne sound insulation?

Sound can propagate in solids in many ways, including through vibration. The vibration is either transmitted by airborne sound or triggered directly by a machine, for example. For example, certain machines are particularly loud if they vibrate the floor without being damped or are installed in direct contact with a building wall. The extent to which a solid body can transmit sound in the form of vibration is determined by the specific propagation speed of structure-borne sound. For some materials, it can be read from the following table.

The particularly low propagation speed of rubber compared to concrete or steel is striking. Rubber is therefore particularly suitable for damping loud machines or systems. Use our rubber-metal machine feet during installation to avoid noisy operation. It is also particularly common to place a rubber mat under the machine.