METHOD AND APPARATUS FOR MULTICHANNEL ACTIVE NOISE AND VIBRATION CONTROL

摘要

A method and apparatus for implementing a fast, exact implementation of a filtered-X LMS (LMS) adaptive filter for which the system's complexity scales according to the number of filter coefficients (W) within the system. A mathematically equivalent controller system intentionally introduces a delay in a feedback signal to thereby reduce the number of calculations necessary to calculate coefficients. The system then utilizes delay compensation to overcome the effects of the delay, resulting in a system which generates the same results as a more costly and computationally more intensive controller system.