OPTIMAL PLACEMENT OF SOURCES FOR ACTIVE NOISE-CONTROL

Active noise control consists in minimizing an undesirable noise by ge nerating an opposite noise by means of secondary sources. The effectiv eness of an active control system is improved by an optimized location of sources. We propose a new method of placement for a single frequen cy excitation based on integer programming. Amplitudes and source loca tions are determined simultaneously. This method is adapted to difficu lt problems where analytical solutions for amplitudes are unknown (bou nds on source strengths or ''minimax criterion'').