Spatial noise-field control with online secondary path modelling: A wave-domain approach

Due to strong inter-channel interference in multichannel ANC, there are fundamental problems associated with the filter adaptation and online secondary path modelling remains a major challenge. This paper proposes a wave-domain adaptation algorithm for multichannel ANC with online secondary path modelling to cancel tonal noise over an extended region of 2D plane in a reverberant room. The design is based on exploiting the diagonal-dominance property of the secondary path in the wave domain. The proposed wave-domain secondary path model is applicable to both concentric and non-concentric circular loudspeaker and microphone array placement and is also robust against array positioning errors. Normalized least mean squares type algorithms are adopted for adaptive feedback control. Through simulation-based verification in comparison with existing methods, the proposed algorithm demonstrates more efficient adaptation with low-level auxiliary noise.

 

Biography

Dr. Wen Zhang received the B.E. degree in telecommunication engineering from Xidian University, Xi’an, China, in 2003, and the M.E. (with first class Hons.) and Ph.D. degrees from The Australian National University (ANU), Canberra, ACT, Australia, in 2005 and 2010, respectively. From 2010 to 2012, she was a Postdoctoral Fellow with the Commonwealth Scientific and Industrial Research Organization (CSIRO), Sydney, Australia. She then worked as a Research Fellow and Fellow at ANU between 2012 and 2017. She is currently a Research Professor with the Center of Intelligent Acoustics and Immersive Communications, Northwestern Polytechnical University, Xi’an, China, and an Adjunct Fellow with the Research School of Engineering, ANU. Her research interests include spatial audio, binaural hearing, active noise control and MIMO acoustic system. She was the recipient of the Discovery Early Career Researcher Award (DECRA) fellowship by the Australian Research Council in 2015 and the recipient of the China’s 1000 talent program for young professionals in 2017.

Date & time

1–2pm 23 Aug 2018

Location

Internal speakers

Dr Wen Zhang

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