Abstract
Auxiliary noise, injected in active noise control (ANC) system for on-line secondary path modeling (SPM), contributes to the residual error (which we want to minimize). In this paper, two new schemes for controlling the auxiliary noise injection are proposed. The first method is ON/OFF control in which an additional fixed filter is used to temporarily hold the tap-weights of the adaptive on-line SPM filter. The decision (ON/OFF) is carried out on the basis of difference of power of errors from the two filters. After suspension of the auxiliary noise injection, the algorithm continuously checks for error outliers so that injection may be restarted in the case of path perturbation. In the second method a new auxiliary-noise-power scheduling strategy based on the error signal of the SPM filter is proposed. In both proposed schemes a fixed step-size is used for the SPM filter and the noise control filter, which reduces the computational complexity of the algorithms. In addition to this, in the second method, no off-line modeling (initial phase) of the secondary path is required.
| Original language | English |
|---|---|
| Title of host publication | 2012 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2012 - Proceedings |
| Pages | 317-320 |
| Number of pages | 4 |
| DOIs | |
| Publication status | Published - Oct 23 2012 |
| Event | 2012 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2012 - Kyoto, Japan Duration: Mar 25 2012 → Mar 30 2012 |
Conference
| Conference | 2012 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2012 |
|---|---|
| Country | Japan |
| City | Kyoto |
| Period | 3/25/12 → 3/30/12 |
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Keywords
- Modified FxLMS algorithm
- Noise scheduling
- Normalized variable step-size (NVSS) LMS algorithm
ASJC Scopus subject areas
- Software
- Signal Processing
- Electrical and Electronic Engineering
Cite this
Auxiliary noise power scheduling for on-line secondary path modeling in single channel feedforward active noise control systems. / Ahmed, Shakeel; Oishi, Akihisa; Akhtar, Muhammad Tahir; Mitsuhashi, Wataru.
2012 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2012 - Proceedings. 2012. p. 317-320 6287880.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Auxiliary noise power scheduling for on-line secondary path modeling in single channel feedforward active noise control systems
AU - Ahmed, Shakeel
AU - Oishi, Akihisa
AU - Akhtar, Muhammad Tahir
AU - Mitsuhashi, Wataru
PY - 2012/10/23
Y1 - 2012/10/23
N2 - Auxiliary noise, injected in active noise control (ANC) system for on-line secondary path modeling (SPM), contributes to the residual error (which we want to minimize). In this paper, two new schemes for controlling the auxiliary noise injection are proposed. The first method is ON/OFF control in which an additional fixed filter is used to temporarily hold the tap-weights of the adaptive on-line SPM filter. The decision (ON/OFF) is carried out on the basis of difference of power of errors from the two filters. After suspension of the auxiliary noise injection, the algorithm continuously checks for error outliers so that injection may be restarted in the case of path perturbation. In the second method a new auxiliary-noise-power scheduling strategy based on the error signal of the SPM filter is proposed. In both proposed schemes a fixed step-size is used for the SPM filter and the noise control filter, which reduces the computational complexity of the algorithms. In addition to this, in the second method, no off-line modeling (initial phase) of the secondary path is required.
AB - Auxiliary noise, injected in active noise control (ANC) system for on-line secondary path modeling (SPM), contributes to the residual error (which we want to minimize). In this paper, two new schemes for controlling the auxiliary noise injection are proposed. The first method is ON/OFF control in which an additional fixed filter is used to temporarily hold the tap-weights of the adaptive on-line SPM filter. The decision (ON/OFF) is carried out on the basis of difference of power of errors from the two filters. After suspension of the auxiliary noise injection, the algorithm continuously checks for error outliers so that injection may be restarted in the case of path perturbation. In the second method a new auxiliary-noise-power scheduling strategy based on the error signal of the SPM filter is proposed. In both proposed schemes a fixed step-size is used for the SPM filter and the noise control filter, which reduces the computational complexity of the algorithms. In addition to this, in the second method, no off-line modeling (initial phase) of the secondary path is required.
KW - Modified FxLMS algorithm
KW - Noise scheduling
KW - Normalized variable step-size (NVSS) LMS algorithm
UR - http://www.scopus.com/inward/record.url?scp=84867606322&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84867606322&partnerID=8YFLogxK
U2 - 10.1109/ICASSP.2012.6287880
DO - 10.1109/ICASSP.2012.6287880
M3 - Conference contribution
AN - SCOPUS:84867606322
SN - 9781467300469
SP - 317
EP - 320
BT - 2012 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2012 - Proceedings
ER -