A novel acoustic feedback compensation filter for nonlinear active noise control system

Luo, Lei; Zhu, Wenzhao; Xie, Antai

doi:10.1016/j.ymssp.2021.107675

Cited by 15 publications

(4 citation statements)

References 31 publications

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“…In this section, two cases of theoretical noise reduction performance of the active enclosed-space noise control system are discussed. Numerical simulations via 4th Runge-kutta scheme were used to verify the noise reduction capability of the discrete system (Luo et al, 2021; Wang et al, 2018). The effect of the ANC is shown in the time and frequency domains in Figure 8.…”

Section: Resultsmentioning

confidence: 99%

An investigation of active enclosed-space noise control with a nonlinear loudspeaker

Liu

Zhu

et al. 2022

Journal of Vibration and Control

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Active control algorithms are widely used in enclosed-space noise control with the nonlinearities of secondary-source loudspeakers ignored. Inspired by nonlinear energy transfer resulting from nonlinear stiffness, this work concerns using a nonlinear loudspeaker to improve enclosed-space noise control. An enclosed-space active noise control system with a nonlinear loudspeaker is modeled. Based on the model, an approximate frequency response function of the noise control system is derived analytically via the harmonic balance method and verified using numerical methods. A globally consistent and bounded Lyapunov function is derived. The effects of the mass, nonlinear stiffness, volume, and area ratio on the noise reduction are also explored. Both analytical and numerical results demonstrate that the improved nonlinear loudspeaker is effective in improving the low-power characteristics of the loudspeaker, increasing noise reduction and improving fault-tolerant and robustness of the active noise control system.

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Section: Resultsmentioning

confidence: 99%

An investigation of active enclosed-space noise control with a nonlinear loudspeaker

Liu

Zhu

et al. 2022

Journal of Vibration and Control

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“…The so-called VFLANN exhibited enhanced noise cancelation performance over its component filters. The Volterra recursive even mirror Fourier nonlinear (VREMFN) hybrid filter shown in work (Lei et al, 2021) can effectively settle linear and nonlinear acoustic feedback influence. It is sufficiently proved that unique and appropriate design of filter combination is of great plasticity and application potential in ANC.…”

Section: Research Focusmentioning

confidence: 99%

Self-balancing collaboration between linear and nonlinear adaptive sub-filters for hybrid active noise control

Zhou

Jia

et al. 2022

Journal of Vibration and Control

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Conventional adaptive filters for active noise control (ANC) are troubled by the trade-off between convergence speed and steady state error, especially when nonlinearity plays an important role in system model. In this paper, a hybrid ANC algorithm called FBFLANN is constructed by the collaboration of FIR and bilinear functional link artificial neural network. The characteristics of linear and nonlinear sub-filters are analyzed and utilized to facilitate the adaptability in noise reduction. A convex factor is employed to automatically balance the contribution of two sub-filters, achieving faster convergence and higher accuracy in the presence of nonlinear distortions. The mathematical working and updating rules of the controller are derived to regulate the ANC process theoretically. The effectiveness of the proposed FBFLANN algorithm is demonstrated by numerous simulation studies considering diverse nonlinear acoustic path models as well as acoustic feedback interference. Hardware ANC platform is built up to verify the real-time noise control performance in physical noisy environments. The simulation and experiment results confirm the applicability and prospects for further development of the presented architecture in noise control scenarios.

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“…Sun discussed a spatial ANC system utilizing multiple circular microphones and loudspeaker arrays for a 3D space and achieved good noise-reduction performance [9]. Luo proposed a Volterra recursive even mirror Fourier nonlinear filter for the nonlinear ANC system with acoustic feedback, showing that it can achieve global noise control in closed space [10]. Kim proposed a new algorithm to enhance the convergence rate and noise reduction efficiency of ANC headsets with fixed-point DSP, reducing the broadband noise by 24 dB [11].…”

Section: Introductionmentioning

confidence: 99%

A New Proportionate Filtered-x RLS Algorithm for Active Noise Control System

Liang

Yao

Luo

et al. 2022

Sensors

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The filtered-x recursive least square (FxRLS) algorithm is widely used in the active noise control system and has achieved great success in some complex de-noising environments, such as the cabin in vehicles and aircraft. However, its performance is sensitive to some user-defined parameters such as the forgetting factor and initial gain. Once these parameters are not selected properly, the de-noising effect of FxRLS will deteriorate. Moreover, the tracking performance of FxRLS for mutation is still restricted to a certain extent. To solve the above problems, this paper proposes a new proportional FxRLS (PFxRLS) algorithm. The forgetting factor and initial gain sensitivity are successfully reduced without introducing new turning parameters. The de-noising level and tracking performance have also been improved. Moreover, the momentum technique is introduced in PFxRLS to further improve its robustness and de-noising level. To ensure stability, its convergence condition is also discussed in this paper. The effectiveness of the proposed algorithms is illustrated by simulations and experiments with different user-defined parameters and time-varying noise environments.

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A novel acoustic feedback compensation filter for nonlinear active noise control system

Cited by 15 publications

References 31 publications

An investigation of active enclosed-space noise control with a nonlinear loudspeaker

An investigation of active enclosed-space noise control with a nonlinear loudspeaker

Self-balancing collaboration between linear and nonlinear adaptive sub-filters for hybrid active noise control

A New Proportionate Filtered-x RLS Algorithm for Active Noise Control System

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