scholarly journals Pre-inverse Active Noise Control System Using Inverse Transfer Function Estimation of Secondary Path with Auxiliary Filter

2017 ◽  
Vol 21 (1) ◽  
pp. 25-35 ◽  
Author(s):  
Kazushi Otsuki ◽  
Naoto Sasaoka ◽  
Ryosuke Minagi ◽  
Yoshio Itoh
Keyword(s):  
Control System ◽  
Transfer Function ◽  
Noise Control ◽  
Active Noise Control ◽  
Function Estimation ◽  
Active Noise

Secondary Source Modeling Based on Analogue Circuits of Electrical Mechanical and Acoustical Systems

2011 ◽  
Vol 328-330 ◽  
pp. 2265-2269
Author(s):  
Yong Hong Nie ◽  
Jun Sheng Cheng
Keyword(s):  
Control System ◽  
Transfer Function ◽  
Noise Reduction ◽  
Noise Control ◽  
Active Noise Control ◽  
Secondary Source ◽  
Source Modeling ◽  
Ideal Model ◽  
Active Noise ◽  
Analogue Circuits

A method of secondary source modeling based on analogue circuits of electrical, mechanical and acoustical systems (SSM-ACEMAS) was provided in order to reduce the mismatch of transfer function estimation of secondary path in the simulation of active noise control (ANC) system. The convergence range and noise reduction performance of the system with SSM-ACEMAS and Filtered-X LMS algorithm were investigated. The results show that the transfer function of such a secondary source model has different amplitude and phase from the ideal model, which makes the noise reduction performance of an ANC system be much worse than the one with ideal model. Meantime, the convergence range of the control system is increased at low frequencies while decreased at high frequencies. The proposed model can provide a new method of secondary source modeling for further research on the simulation of active noise control system.

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