N2 - Application of active noise reduction (ANR) systems in hearing protectors requires the use of control algorithms to ensure stability of the ANR system and at the same time highly effective active noise reduction. A control algorithm based on NOTCH filters is an example of solutions that meet these criteria. Their disadvantage is operation over a narrow frequency band and a need for prior determination of frequencies to be reduced. This paper presents a solution of the ANR system for hearing protectors which is controlled with the use of modified NOTCH filters with parameters determined by a genetic algorithm. Application of a genetic algorithm allows to change the NOTCH filter reference signal frequency, and thus, adapt the filter to the reduced signal frequency. L1 - http://journals.pan.pl/Content/101516/PDF/05-paper.pdf L2 - http://journals.pan.pl/Content/101516 PY - 2013 IS - No 2 EP - 190 DO - 10.2478/aoa-2013-0021 KW - active noise reduction KW - hearing protectors A1 - Górski, Paweł A1 - Morzyński, Leszek PB - Polish Academy of Sciences, Institute of Fundamental Technological Research, Committee on Acoustics VL - vol. 38 DA - 2013 T1 - Active Noise Reduction Algorithm Based on NOTCH Filter and Genetic Algorithm SP - 185 UR - http://journals.pan.pl/dlibra/publication/edition/101516 T2 - Archives of Acoustics