Analysis of Online Secondary-Path Modeling With Auxiliary Noise Scaled by Residual Noise Signal

作者：Liu Jian^*; Xiao Yegui; Sun Jinwei; Xu Li

来源：IEEE Transactions on Audio Speech and Language Processing, 2010, 18(8): 1978-1993.

DOI：10.1109/TASL.2010.2040789

• Auxiliary noise
• filtered-X LMS (FXLMS)
• narrowband active noise control
• online secondary-path modeling
• performance analysis

Online secondary-path modeling of active noise control (ANC) systems may be effectively implemented by injecting an auxiliary white noise whose magnitude is scaled by a function of residual noise signal. In this paper, a filtered-X LMS (FXLMS) based narrowband ANC system is analyzed, whose online secondary-path modeling is based on the use of an auxiliary white noise scaled by one-sample-delayed residual noise signal. Difference equations governing the dynamics of the entire system and closed-form expressions for steady-state mean-square errors (MSE) as well as the residual noise power are derived and discussed in detail. Extensive simulations are conducted to confirm the validity of the analytical findings.

• 出版日期2010-11
• 单位哈尔滨工业大学