Analysis of floor layers with a respect to impact noise level

摘要

This paper relates to impact sound insulation of floor and discussed the EN ISO 140-8, 2001 and STN 73 0532. In building practice we often deal with situation in which the ceiling structures complies these standards but nevertheless the building users complain about the disturbing impact noise. In practice, the impact noise loss level is expressed by weighted reduction of impact sound pressure level ΔL_w (dB). Frequently, there is problem with appropriate evaluation of the impact noise in the whole frequency spectrum of noise. This is especially problem of frequency range under 315 Hz. In this article we try to discuss and to clarify the functionality between of floor layers, different materials and their combinations in frequency domain from the point of view of impact noise level.