Nonlinear active noise control system based on Wollaston filter

The invention discloses a nonlinear active noise control system based on a Wollaston filter. The nonlinear active noise control system comprises the following steps: step 1, collecting a reference noise signal x (n) at a moment n; step 2, recursively deducing the reference noise signal x (n) at the n moment into a reference noise signal vector, and respectively inputting the reference noise signal vector into each module of the nonlinear sub-part; 3, obtaining an output signal of the nonlinear sub-part according to an output signal of the module; 4, inputting an output signal of the nonlinear sub-part into the linear sub-part to obtain an output signal of the nonlinear active noise control system based on the Wollaston filter; and step 5, performing interference cancellation on a desired signal generated after the output signal of the nonlinear active noise control system based on the Wollaston filter passes through the secondary sound channel and a desired signal generated after the reference noise signal pa