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Frequency Domain Active Noise Control System without a Secondary Path Model via Perturbation Method
Yoshinobu KAJIKAWA Yasuo NOMURA
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2001/12/01
Print ISSN: 0916-8508
Type of Manuscript: PAPER
Category: Digital Signal Processing
active noise control, frequency domain adaptive filter, simultaneous perturbation method, filtered-x algorithm,
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In this paper, we propose a frequency domain active noise control (ANC) system without a secondary path model. The proposed system is based on the frequency domain simultaneous perturbation (FDSP) method we have proposed. In this system, the coefficients of the adaptive filter are updated only by error signals. The conventional ANC system using the filtered-x algorithm becomes unstable due to the error between the secondary path, from secondary source to error sensor, and its model. In contrast, the proposed ANC system has the advantage not to use the model. In this paper, we show the principle of the proposed ANC system, and examine its efficiency through computer simulations.