FPGA implementation of a modular active noise control system

This contribution presents the High-speed field programmable gate array (FPGA) implementation of a modular architecture of the Active Noise Control (ANC) system with online secondary path modelling. The clock frequency that is obtained for this FPGA implementation is 120MHz. A comparison of this implementation to other FPGA and DSP implementations of an ANC system shows a better speed up and convergence time for the proposed design. This innovative modular implementation of the ANC system results in a fast design and fast convergence with capability to expand the four adaptive filters and data bus when higher speed for ANC system is desired. In the other word, considering the modularity of the design and the reconfigurability of FPGA, one can expand an ANC system for different accuracies and required convergence times.