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

Abstract:

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.

• Periodical: Advanced Materials Research (Volumes 328-330)
• Pages: 2265-2269
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.328-330.2265
• Online since: September 2011
• Authors: Yong Hong Nie, Jun Sheng Cheng
• Keywords: Active Noise Control, Analogue Circuit of Electrical Acoustical System, Analogue Circuit of Electrical Mechanical System, Filtered-X LMS, Secondary Source

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