Refection of LFN Perception on an Auditory Model

摘要

Low-frequency noise (LFN) is a growing problem and there may be different reasons for this: Houses are better insulated today than in the past, but the acoustical effect is concentrated on the higher frequency range conditioned by physics. Certainly, the occupants have in most cases only a low-level noise (mostly measured in dB[A]) in their flat now, but this noise becomes an emphasized LFN, which can be extremely annoying for some people even if the levels are lower than the limits given in the relevant rules. Figure 1 shows the third-octave-spectrum of a LFN and the course of the L_(ceq,30s) measured in a flat over three days. This LFN is caused by a power-heat-station located near to the flat [1-7].