Adaptive noise control in 3-D space using loudspeaker array

A model-based adaptive noise control system using loudspeaker array and error sensor array is developed in this paper. This control system can be used to reduce the noise in a specific three-dimensional region. First, open loop system transfer functions are designed using a theoretical propagation model. The transfer functions thus found are regarded as the nominal values for the complete system. Second, to compensate for deviations from the theoretical model, the transfer functions are adapted using error measures from error sensor array by LMS algorithm. Simulation results shows that our approach is effective for noise reduction in three-dimensional space.