ADAPTIVE ACTIVE CONTROL OF NOISE IN 3-D REVERBERANT ENCLOSURES

A multi-channel active noise controller has been developed based on adaptive filtering, which can effectively work in three-dimensional (3-D) reverberant sound fields. The controller consists of adaptive filters to generate the proper anti-noise signals and an on-line estimator to track changes in the environment so that successful operation of the controller in a varying environment can be ensured. Therefore the controller is fully adaptive and does not require any pre-training or separate modelling. The performance of the controller has been verified on a test set-up. The result was found to be promising. © 1993 Academic Press Limited.