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Spatial Noise-Field Control With Online Secondary Path Modeling: A Wave-Domain Approach

机译:在线辅助路径建模的空间噪声场控制:波域方法

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Due to strong interchannel interference in multichannel active noise control (ANC), there are fundamental problems associated with the filter adaptation and online secondary path modeling remains a major challenge. This paper proposes a wave-domain adaptation algorithm for multichannel ANC with online secondary path modelling to cancel tonal noise over an extended region of two-dimensional plane in a reverberant room. The design is based on exploiting the diagonal-dominance property of the secondary path in the wave domain. The proposed wave-domain secondary path model is applicable to both concentric and nonconcentric circular loudspeakers and microphone array placement, and is also robust against array positioning errors. Normalized least mean squares-type algorithms are adopted for adaptive feedback control. Computational complexity is analyzed and compared with the conventional time-domain and frequency-domain multichannel ANCs. Through simulation-based verification in comparison with existing methods, the proposed algorithm demonstrates more efficient adaptation with low-level auxiliary noise.
机译:由于在多通道有源噪声控制(ANC)中存在严重的通道间干扰,因此存在与滤波器自适应相关的基本问题,在线次级路径建模仍然是一个主要挑战。提出了一种具有在线次级路径建模的多通道ANC的波域自适应算法,以消除混响室内二维平面扩展区域的音调噪声。该设计基于在波域中利用次级路径的对角支配性。所提出的波域次级路径模型适用于同心和非同心圆形扬声器和麦克风阵列放置,并且对于阵列定位误差也具有鲁棒性。归一化最小均方型算法用于自适应反馈控制。分析了计算复杂度,并将其与常规时域和频域多通道ANC进行了比较。通过与现有方法相比,基于仿真的验证,该算法证明了在低水平辅助噪声下的更有效匹配。

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