Uniform active noise control based on Nelder-Mead algorithm

The traditional mean squared error(MSE) criterion is often adopted in the multi-channel active noise control system. However, a non-uniform residual sound field residual is generated. In this paper, the criteria based on the minimax and variance are presented to achieve the uniform residual sound field. Those criteria are implemented by an o-line Nelder-Mead algorithm. The solution of MSE criterion is set as the initial value of the algorithm. Noise reduction experiments under three criteria are conducted in the semi-anechoic chamber. Compared with a multi-channel active noise control system employing the MSE and minimax error criteria, the results show the system with variance-based criterion can achieve a more uniform residual sound field at discrete microphone points.