Noise power scheduling in active noise control systems with online secondary path modeling
نویسندگان
چکیده
منابع مشابه
Noise power scheduling in active noise control systems with online secondary path modeling
In active noise control (ANC) systems, the online secondary path modeling (OSPM) methods that use additive random noise are often applied. The additive random noise, however, contributes to the residual noise, and thus deteriorates the noise control performance of ANC systems. This paper proposes a new OSPMmethod with power scheduling of additive random noise. Here the OSPM filter is adapted us...
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This paper proposes a new method for online secondary path modeling (OSPM) in active noise control (ANC) systems. The proposed method comprises two adaptive filters: a noise control filter and an OSPM filter. The noise control filter is adapted by the FxLMS algorithm, and using the same error signal as used in the adaptation of the OSPM filter. The OSPM filter is adapted using a variable step s...
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In recent years, the online secondary path modeling (SPM) method with an auxiliary noise power scheduling strategy has been crucial for active noise control (ANC) systems and has also become a popular research topic. However, most scheduling strategies have been designed for broadband active noise control (BANC), and these ideas may not be directly applied to narrowband active noise control (NA...
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A secondary path modeling technique for active noise control systems is developed for both on-line and off-line modeling with faster convergence and higher modeling accuracy. The optimum delay for the adaptive prediction error filter to reduce the interference in system modeling is equal to the length of the impulse response of the secondary path being modeled.
متن کاملA New Structure for Feedforward Active Noise Control Systems with Online Secondary-path Modeling
This paper proposes a new structure for the feedforward active noise control (ANC) systems with online secondary path modeling. The proposed structure 1) uses the same error signal for updating the noise-control process as used for the modeling process, and 2) incorporates an averaging based filtered-reference algorithm in the noise-control process. The theoretical considerations are confirmed ...
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ژورنال
عنوان ژورنال: IEICE Electronics Express
سال: 2007
ISSN: 1349-2543
DOI: 10.1587/elex.4.66