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An augmented diffusion algorithm with bidirectional communication for a distributed active noise control system.
Li, Tianyou; Rao, Li; Zhao, Sipei; Duan, Hongji; Lu, Jing; Burnett, Ian S.
Afiliação
  • Li T; Key Laboratory of Modern Acoustics, Institute of Acoustics, Nanjing University, Nanjing 210093, China.
  • Rao L; Key Laboratory of Modern Acoustics, Institute of Acoustics, Nanjing University, Nanjing 210093, China.
  • Zhao S; Center for Audio, Acoustics and Vibration, Faculty of Engineering and Information Technology, University of Technology Sydney, Ultimo, New South Wales 2007, Australia.
  • Duan H; Key Laboratory of Modern Acoustics, Institute of Acoustics, Nanjing University, Nanjing 210093, China.
  • Lu J; Key Laboratory of Modern Acoustics, Institute of Acoustics, Nanjing University, Nanjing 210093, China.
  • Burnett IS; STEM College, RMIT University, Melbourne, Victoria 3000, Australia.
J Acoust Soc Am ; 154(6): 3568-3579, 2023 Dec 01.
Article em En | MEDLINE | ID: mdl-38038613
Recent studies on diffusion adaptation for distributed active noise control (DANC) systems have attracted significant research interest due to their balance between computational burden and stability compared to conventional centralized and decentralized adaptation schemes. The conventional multitask diffusion FxLMS algorithm assumes that the converged solutions of all control filters are consistent to each other, which is unrealistic in practice hence results in inferior performance in noise reduction. An augmented diffusion FxLMS algorithm has been proposed to overcome this problem, which adopts a neighborhood-wide adaptation and node-based combination approach to mitigate the bias in the converged solution of the multitask diffusion algorithms. However, the improvement comes at the expense of a higher computational burden and communication cost. All existing DANC systems, including the multitask and augmented diffusion algorithms, assume one-way communication between nodes. By contrast, this paper proposes a bidirectional communication scheme for the augmented diffusion algorithm to further reduce the memory requirement, computational burden, and communication cost. Simulation results in the free field and with measured room impulse responses both demonstrate that the proposed augmented diffusion algorithm with bidirectional communication can achieve a faster convergence speed than that based on one-way communication with a lower memory, computation, and communication burden.

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: J Acoust Soc Am Ano de publicação: 2023 Tipo de documento: Article País de afiliação: China País de publicação: Estados Unidos

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: J Acoust Soc Am Ano de publicação: 2023 Tipo de documento: Article País de afiliação: China País de publicação: Estados Unidos