Abstract
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.
| Original language | English |
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| Title of host publication | IEEE International Conference on Engineering of Intelligent Systems, ICEIS 2006 |
| Publication status | Published - 2006 Dec 1 |
| Event | IEEE International Conference on Engineering of Intelligent Systems, ICEIS 2006 - Islamabad, Pakistan Duration: 2006 Apr 22 → 2006 Apr 23 |
Other
| Other | IEEE International Conference on Engineering of Intelligent Systems, ICEIS 2006 |
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| Country | Pakistan |
| City | Islamabad |
| Period | 06/4/22 → 06/4/23 |
ASJC Scopus subject areas
- Control and Systems Engineering
- Electrical and Electronic Engineering