Active control of noise in an enclosure using hybrid control techniques

This paper presents an MCHANC (multiple channel hybrid active noise control) system in which multiple channel feedforward algorithms and multiple channel feedback algorithms are used simultaneously. An adjoint LMS algorithm is also used to reduce the computational burden of the adaptive filter. Computer simulations are performed to show the effectiveness the proposed MCHANC and a real time implementation in an experimental enclosure is carried out on a TMS320C31 processor.