Online secondary path modelling in wave-domain active noise control
Wen Zhang, Christian Hofmann, Michael Buerger, Thushara D. Abhayapala, Walter Kellermann
Abstract
The performance of an ANC system largely depends on the availability of an accurate secondary path model. This is however a major challenge in multichannel ANC where the computational complexity increases significantly with the number of secondary sources and error sensors. This paper proposes wave-domain adaptive processing algorithm for multichannel ANC with online secondary modelling to cancel a tonal noise over a region of space within a reverberant room. The design is based on exploiting a special property of the secondary path model in the wave domain. A feedback control system is implemented, where a single microphone array is placed at the boundary of the control region to measure the residual signals, and a loudspeaker array reproduces secondary sources to generate the anti-noise signals and auxiliary noise for secondary path modelling. Through experimental verification in comparison with existing methods the proposed algorithm demonstrates more efficient adaptation with low-level auxiliary noise.
BibTeX
@inproceedings{icassp2017_onlinesecondaryp,
title = {Online secondary path modelling in wave-domain active noise control},
author = {Wen Zhang and Christian Hofmann and Michael Buerger and Thushara D. Abhayapala and Walter Kellermann},
booktitle = {ICASSP 2017},
year = {2017}
}