TY - GEN
T1 - On Adaptive Feedback Active Noise Control Systems With Online Adaptation of Secondary Path Estimation Filter
AU - Akhtar, Muhammad Tahir
N1 - Publisher Copyright:
© 2024 IEEE.
PY - 2024
Y1 - 2024
N2 - This paper focuses on identifying the secondary path (SP) in feedback active noise control (FBANC) systems during online operation. In FBANC, it's not feasible to install a reference microphone for capturing the reference signal needed for the (adaptive) active noise control (ANC) filter. Consequently, an appropriate reference signal is required to be electronically generated, necessitating an accurate estimation of the SP. The accuracy of SP estimation (SPE) directly impacts the stability and noise reduction capabilities of ANC systems. Building upon prior work that utilized two adaptive filters; one for ANC and another for SPE; this paper presents a method with a similar structure. The key idea in this paper is to tailor a generalized sigmoid function for developing a variable step-size (VSS)-based adaptive algorithm for (adaptive) ANC filter. The proposed method exhibits improved noise reduction performance as well as good SPE performance, as evidenced by the detailed numerical results provided in the paper.
AB - This paper focuses on identifying the secondary path (SP) in feedback active noise control (FBANC) systems during online operation. In FBANC, it's not feasible to install a reference microphone for capturing the reference signal needed for the (adaptive) active noise control (ANC) filter. Consequently, an appropriate reference signal is required to be electronically generated, necessitating an accurate estimation of the SP. The accuracy of SP estimation (SPE) directly impacts the stability and noise reduction capabilities of ANC systems. Building upon prior work that utilized two adaptive filters; one for ANC and another for SPE; this paper presents a method with a similar structure. The key idea in this paper is to tailor a generalized sigmoid function for developing a variable step-size (VSS)-based adaptive algorithm for (adaptive) ANC filter. The proposed method exhibits improved noise reduction performance as well as good SPE performance, as evidenced by the detailed numerical results provided in the paper.
KW - Feedback ANC systems
KW - FxLMS algorithm
KW - generalized sigmoid function
KW - secondary path estimation
KW - variable step-size algorithm
UR - http://www.scopus.com/inward/record.url?scp=85204953918&partnerID=8YFLogxK
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U2 - 10.1109/MWSCAS60917.2024.10658961
DO - 10.1109/MWSCAS60917.2024.10658961
M3 - Conference contribution
AN - SCOPUS:85204953918
T3 - Midwest Symposium on Circuits and Systems
SP - 698
EP - 702
BT - 2024 IEEE 67th International Midwest Symposium on Circuits and Systems, MWSCAS 2024
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 67th IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2024
Y2 - 11 August 2024 through 14 August 2024
ER -