Abstract
This paper studies the diffusion (Diff) control for multichannel ANC systems, where a group of controllers and error microphones are physically distributed at different locations within a large area. In this case, the conventional
consensus agreement for controllers cannot be reached. To solve this problem, a new Diff filtered-x least mean squares (Diff-FxLMS) algorithm that incorporates the knowledge of spatial smoothness is proposed. Compared to conventional
Diff control criteria that have a fixed spatial smoothing strategy, the proposed Diff-FxLMS adjusts a so called spatial regularization (SR) coefficient adaptively such that the neighboring controllers keep their decision variables
close to one another to minimize the global cost function while giving preference to possibly distinct local signals. A detailed performance analysis is carried out and verified by simulation. Based on the analysis, a variable SR formula is derived. The performance of the proposed algorithm is also
compared with conventional methods.
consensus agreement for controllers cannot be reached. To solve this problem, a new Diff filtered-x least mean squares (Diff-FxLMS) algorithm that incorporates the knowledge of spatial smoothness is proposed. Compared to conventional
Diff control criteria that have a fixed spatial smoothing strategy, the proposed Diff-FxLMS adjusts a so called spatial regularization (SR) coefficient adaptively such that the neighboring controllers keep their decision variables
close to one another to minimize the global cost function while giving preference to possibly distinct local signals. A detailed performance analysis is carried out and verified by simulation. Based on the analysis, a variable SR formula is derived. The performance of the proposed algorithm is also
compared with conventional methods.
Original language | English |
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Title of host publication | 2021 IEEE International Conference on Acoustics, Speech and Signal Processing |
Publisher | IEEE |
Pages | 4695-4699 |
ISBN (Electronic) | 9781728176055 |
DOIs | |
Publication status | Published - May 2021 |
Event | 2021 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2021 - Toronto, Ontario, Canada Duration: 6 Jun 2021 → 11 Jun 2021 |
Competition
Competition | 2021 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2021 |
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Country/Territory | Canada |
Period | 6/06/21 → 11/06/21 |