Method of adjusting Active Noise Control system parameters for application in railway sleeping cars

Testing an Active Noise Control (ANC) system often requires performing numerous and tedious experiments. In many cases, it is difficult and expensive to perform these measurements in the actual place where the ANC system is going to be applied. A good example is the suppression of disturbing noise in a railway sleeping car application. In this paper we propose an easy to implement simulation tool to adjust and predict the behaviour of the ANC system. To check the degree of accuracy of the proposed method, a complete ANC setup was installed in the laboratory to obtain experimental data. It was found that the Sound Pressure Level (SPL) and frequency spectrums at the error microphone were very similar between the simulation and experimental results. This shows that the proposed tool could be useful in simplifying the initial parameter adjustments of an ANC system.