TY - GEN
T1 - A new method for active noise control systems with online acoustic-feedback-path modeling
AU - Akhtar, Muhammad Tahir
AU - Abe, Masahide
AU - Kawamata, Masayuki
PY - 2006/12/1
Y1 - 2006/12/1
N2 - This paper proposes a new method for online modeling of the acoustic feedback path in active noise control (ANC) systems. The proposed method comprises three adaptive filters: 1) the FxLMS algorithm based noise control filter, 2) a variable step size (VSS) LMS algorithm based feedback path modeling (FBPM) filter, and 3) LMS algorithm based adaptive noise cancelation (ADNC) filter. The ADNC filter removes the disturbance from the desired response of FBPM filter. The disturbance signal in FBPM filter is thus decreasing in nature, (ideally) converging to zero. This gives basic idea for the VSS LMS algorithm for FBPM filter: a small step size is used initially and later its value is increased accordingly. The computer simulations show that the proposed method can reduce FBPM error at a faster convergence rate than the existing methods.
AB - This paper proposes a new method for online modeling of the acoustic feedback path in active noise control (ANC) systems. The proposed method comprises three adaptive filters: 1) the FxLMS algorithm based noise control filter, 2) a variable step size (VSS) LMS algorithm based feedback path modeling (FBPM) filter, and 3) LMS algorithm based adaptive noise cancelation (ADNC) filter. The ADNC filter removes the disturbance from the desired response of FBPM filter. The disturbance signal in FBPM filter is thus decreasing in nature, (ideally) converging to zero. This gives basic idea for the VSS LMS algorithm for FBPM filter: a small step size is used initially and later its value is increased accordingly. The computer simulations show that the proposed method can reduce FBPM error at a faster convergence rate than the existing methods.
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M3 - Conference contribution
AN - SCOPUS:40849147322
SN - 1424404568
SN - 9781424404568
T3 - IEEE International Conference on Engineering of Intelligent Systems, ICEIS 2006
BT - IEEE International Conference on Engineering of Intelligent Systems, ICEIS 2006
T2 - IEEE International Conference on Engineering of Intelligent Systems, ICEIS 2006
Y2 - 22 April 2006 through 23 April 2006
ER -