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J Acoust Soc Am. 2019 Apr;145(4):EL291. doi: 10.1121/1.5097603.

Robust Wiener controller design with acoustic feedback for active noise control systems.

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School of Mechanical and Automotive Engineering, Qingdao University of Technology, Qingdao, Shandong 266520, China.
Centre for Vision, Speech and Signal Processing, University of Surrey, Guildford GU2 7XH, United Kingdom.
Key Laboratory of Noise and Vibration Research, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190,,,,,,


Although the acoustic feedback could be alleviated by the neutralization method with a feedback model, an active noise control system could still suffer from being unstable if the feedback path exhibits significant variations. In this letter, a modified Wiener controller is introduced to enhance the robust stability with a fixed feedback neutralization filter. The proposed controller is designed with frequency-weighted penalties, which are adjusted iteratively according to Nyquist stability criterion. Experiment results based on a ventilation duct system shows that the robust stability could be achieved with the proposed method while a relatively good performance could be maintained.


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